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Groups > comp.os.linux.networking > #3539 > unrolled thread

Is it possible to obtain all of the ip addresses correspoding to a FQDN?

Started byHongyi Zhao <hongyi.zhao@gmail.com>
First post2015-10-18 01:43 +0000
Last post2015-10-23 21:21 +0200
Articles 20 on this page of 34 — 10 participants

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  Is it possible to obtain all of the ip addresses correspoding to a FQDN? Hongyi Zhao <hongyi.zhao@gmail.com> - 2015-10-18 01:43 +0000
    Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Bit Twister <BitTwister@mouse-potato.com> - 2015-10-18 03:27 +0000
    Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Marc Haber <mh+usenetspam1118@zugschl.us> - 2015-10-18 09:45 +0200
      Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Richard Kettlewell <rjk@greenend.org.uk> - 2015-10-18 12:43 +0100
        Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Marc Haber <mh+usenetspam1118@zugschl.us> - 2015-10-18 17:02 +0200
          Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-18 18:17 +0000
            Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Marc Haber <mh+usenetspam1118@zugschl.us> - 2015-10-18 20:30 +0200
              Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Richard Kettlewell <rjk@greenend.org.uk> - 2015-10-18 19:35 +0100
    Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? William Unruh <unruh@invalid.ca> - 2015-10-18 17:31 +0000
      Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-18 13:48 -0400
        Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? William Unruh <unruh@invalid.ca> - 2015-10-18 18:22 +0000
          Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Richard Kettlewell <rjk@greenend.org.uk> - 2015-10-18 19:32 +0100
            Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Baho Utot <baho-utot@columbus.rr.com> - 2015-10-18 16:45 -0400
              Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-18 17:14 -0400
                Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Baho Utot <baho-utot@columbus.rr.com> - 2015-10-18 19:09 -0400
                  Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-18 20:22 -0400
                  Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-18 20:41 -0400
                    Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Rick Jones <rick.jones2@hp.com> - 2015-10-19 20:56 +0000
              Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Richard Kettlewell <rjk@greenend.org.uk> - 2015-10-18 22:25 +0100
                Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Baho Utot <baho-utot@columbus.rr.com> - 2015-10-18 19:04 -0400
                  Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Richard Kettlewell <rjk@greenend.org.uk> - 2015-10-19 09:22 +0100
                    Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? William Unruh <unruh@invalid.ca> - 2015-10-19 16:55 +0000
                      Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-10-19 11:23 -0600
                        Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? William Unruh <unruh@invalid.ca> - 2015-10-19 17:37 +0000
                          Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-20 14:52 -0400
                            Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Baho Utot <baho-utot@columbus.rr.com> - 2015-10-20 18:45 -0400
                              Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? William Unruh <unruh@invalid.ca> - 2015-10-21 01:47 +0000
                                Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Baho Utot <baho-utot@columbus.rr.com> - 2015-10-21 18:43 -0400
                              Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-21 10:54 +0000
                                Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Baho Utot <baho-utot@columbus.rr.com> - 2015-10-21 18:38 -0400
                                  Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Marc Haber <mh+usenetspam1118@zugschl.us> - 2015-10-22 08:57 +0200
                                    Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Baho Utot <baho-utot@columbus.rr.com> - 2015-10-22 19:36 -0400
                                      Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-23 17:44 +0000
                                      Re: Is it possible to obtain all of the ip addresses correspoding to a FQDN? Marc Haber <mh+usenetspam1118@zugschl.us> - 2015-10-23 21:21 +0200

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#3539 — Is it possible to obtain all of the ip addresses correspoding to a FQDN?

FromHongyi Zhao <hongyi.zhao@gmail.com>
Date2015-10-18 01:43 +0000
SubjectIs it possible to obtain all of the ip addresses correspoding to a FQDN?
Message-ID<mvutff$tf2$1@aspen.stu.neva.ru>
Hi all,

For a domain name / FQDN, say www.google.com , is there a method to 
obtain all of the ip addresses corresponding it?

Regards
-- 
.: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :.

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#3540

FromBit Twister <BitTwister@mouse-potato.com>
Date2015-10-18 03:27 +0000
Message-ID<slrnn264ht.s4i.BitTwister@wb.home.test>
In reply to#3539
On Sun, 18 Oct 2015 01:43:11 +0000 (UTC), Hongyi Zhao wrote:
> Hi all,
>
> For a domain name / FQDN, say www.google.com , is there a method to 
> obtain all of the ip addresses corresponding it?

I would guess it depends on who you ask or who responds to your lookup request.

For starters have you tried something like

$ nslookup www.google.com
Server:         127.0.0.1
Address:        127.0.0.1#53

Non-authoritative answer:
Name:   www.google.com
Address: 74.125.21.106
Name:   www.google.com
Address: 74.125.21.147
Name:   www.google.com
Address: 74.125.21.103
Name:   www.google.com
Address: 74.125.21.105
Name:   www.google.com
Address: 74.125.21.99
Name:   www.google.com
Address: 74.125.21.104

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#3541

FromMarc Haber <mh+usenetspam1118@zugschl.us>
Date2015-10-18 09:45 +0200
Message-ID<mvvimv$hvj$1@news1.tnib.de>
In reply to#3539
Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>For a domain name / FQDN, say www.google.com , is there a method to 
>obtain all of the ip addresses corresponding it?

Is this homework again?

|[2/501]mh@swivel:~$ dig google.com
|
|; <<>> DiG 9.9.5-12-Debian <<>> google.com
|;; global options: +cmd
|;; Got answer:
|;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63902
|;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 4, ADDITIONAL: 5
|
|;; OPT PSEUDOSECTION:
|; EDNS: version: 0, flags:; udp: 4096
|;; QUESTION SECTION:
|;google.com.                    IN      A
|
|;; ANSWER SECTION:
|google.com.             300     IN      A       109.193.193.94
|google.com.             300     IN      A       109.193.193.123
|google.com.             300     IN      A       109.193.193.84
|google.com.             300     IN      A       109.193.193.89
|google.com.             300     IN      A       109.193.193.93
|google.com.             300     IN      A       109.193.193.103
|google.com.             300     IN      A       109.193.193.108
|google.com.             300     IN      A       109.193.193.113
|google.com.             300     IN      A       109.193.193.98
|google.com.             300     IN      A       109.193.193.104
|google.com.             300     IN      A       109.193.193.109
|google.com.             300     IN      A       109.193.193.114
|google.com.             300     IN      A       109.193.193.88
|google.com.             300     IN      A       109.193.193.99
|google.com.             300     IN      A       109.193.193.118
|google.com.             300     IN      A       109.193.193.119
|
|;; AUTHORITY SECTION:
|google.com.             33361   IN      NS      ns1.google.com.
|google.com.             33361   IN      NS      ns4.google.com.
|google.com.             33361   IN      NS      ns2.google.com.
|google.com.             33361   IN      NS      ns3.google.com.
|
|;; ADDITIONAL SECTION:
|ns1.google.com.         33361   IN      A       216.239.32.10
|ns2.google.com.         33361   IN      A       216.239.34.10
|ns3.google.com.         33361   IN      A       216.239.36.10
|ns4.google.com.         33361   IN      A       216.239.38.10
|
|;; Query time: 42 msec
|;; SERVER: 192.168.181.53#53(192.168.181.53)
|;; WHEN: Sun Oct 18 09:45:15 CEST 2015
|;; MSG SIZE  rcvd: 431
|
|[3/502]mh@swivel:~$

Greetings
Marc
-- 
-------------------------------------- !! No courtesy copies, please !! -----
Marc Haber         |   " Questions are the         | Mailadresse im Header
Mannheim, Germany  |     Beginning of Wisdom "     | http://www.zugschlus.de/
Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834

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#3542

FromRichard Kettlewell <rjk@greenend.org.uk>
Date2015-10-18 12:43 +0100
Message-ID<87fv18l7vy.fsf@mantic.terraraq.uk>
In reply to#3541
Marc Haber <mh+usenetspam1118@zugschl.us> writes:
> Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>>For a domain name / FQDN, say www.google.com , is there a method to 
>>obtain all of the ip addresses corresponding it?
>
> Is this homework again?
>
[...]
> |;; ANSWER SECTION:
> |google.com.             300     IN      A       109.193.193.94
> |google.com.             300     IN      A       109.193.193.123
> |google.com.             300     IN      A       109.193.193.84
> |google.com.             300     IN      A       109.193.193.89
> |google.com.             300     IN      A       109.193.193.93
> |google.com.             300     IN      A       109.193.193.103
> |google.com.             300     IN      A       109.193.193.108
> |google.com.             300     IN      A       109.193.193.113
> |google.com.             300     IN      A       109.193.193.98
> |google.com.             300     IN      A       109.193.193.104
> |google.com.             300     IN      A       109.193.193.109
> |google.com.             300     IN      A       109.193.193.114
> |google.com.             300     IN      A       109.193.193.88
> |google.com.             300     IN      A       109.193.193.99
> |google.com.             300     IN      A       109.193.193.118
> |google.com.             300     IN      A       109.193.193.119

That’s not all the IP addresses for google.com.  Specifically, it’s
missing IPv6 addresses.  nslookup has the same issue.

Another problem is that the answer depends where you start from.  The
addresses you quote belong to Kabel BW GmbH.  Similarly the addresses I
get from home belong to my ISP.  From other locations I see addresses
more directly associated with Google Inc.

--
http://www.greenend.org.uk/rjk/

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#3543

FromMarc Haber <mh+usenetspam1118@zugschl.us>
Date2015-10-18 17:02 +0200
Message-ID<n00c96$d3s$1@news1.tnib.de>
In reply to#3542
Richard Kettlewell <rjk@greenend.org.uk> wrote:
>Marc Haber <mh+usenetspam1118@zugschl.us> writes:
>> Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>>>For a domain name / FQDN, say www.google.com , is there a method to 
>>>obtain all of the ip addresses corresponding it?
>>
>> Is this homework again?
>>
>[...]
>> |;; ANSWER SECTION:
>> |google.com.             300     IN      A       109.193.193.94
>> |google.com.             300     IN      A       109.193.193.123
>> |google.com.             300     IN      A       109.193.193.84
>> |google.com.             300     IN      A       109.193.193.89
>> |google.com.             300     IN      A       109.193.193.93
>> |google.com.             300     IN      A       109.193.193.103
>> |google.com.             300     IN      A       109.193.193.108
>> |google.com.             300     IN      A       109.193.193.113
>> |google.com.             300     IN      A       109.193.193.98
>> |google.com.             300     IN      A       109.193.193.104
>> |google.com.             300     IN      A       109.193.193.109
>> |google.com.             300     IN      A       109.193.193.114
>> |google.com.             300     IN      A       109.193.193.88
>> |google.com.             300     IN      A       109.193.193.99
>> |google.com.             300     IN      A       109.193.193.118
>> |google.com.             300     IN      A       109.193.193.119
>
>That’s not all the IP addresses for google.com.  Specifically, it’s
>missing IPv6 addresses.  nslookup has the same issue.
>
>Another problem is that the answer depends where you start from.  The
>addresses you quote belong to Kabel BW GmbH.  Similarly the addresses I
>get from home belong to my ISP.  From other locations I see addresses
>more directly associated with Google Inc.

Google obviously uses some kind of GeoIP setup to make its responses
faster. Which makes the homework assignment even stupider. Why don't
even teachers grok today's Internet any more?

Grüße
Marc
-- 
-------------------------------------- !! No courtesy copies, please !! -----
Marc Haber         |   " Questions are the         | Mailadresse im Header
Mannheim, Germany  |     Beginning of Wisdom "     | http://www.zugschlus.de/
Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834

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#3547

FromJorgen Grahn <grahn+nntp@snipabacken.se>
Date2015-10-18 18:17 +0000
Message-ID<slrnn27oi5.5q5.grahn+nntp@frailea.sa.invalid>
In reply to#3543
On Sun, 2015-10-18, Marc Haber wrote:
> Richard Kettlewell <rjk@greenend.org.uk> wrote:
>>Marc Haber <mh+usenetspam1118@zugschl.us> writes:
>>> Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>>>>For a domain name / FQDN, say www.google.com , is there a method to 
>>>>obtain all of the ip addresses corresponding it?
>>>
>>> Is this homework again?
...

>>That???s not all the IP addresses for google.com.  Specifically, it's
>>missing IPv6 addresses.  nslookup has the same issue.

The 'host' command which comes with bind will list IPv4 and IPv6
addresses by default though -- A and AAAA records.

>>Another problem is that the answer depends where you start from.  The
>>addresses you quote belong to Kabel BW GmbH.  Similarly the addresses I
>>get from home belong to my ISP.  From other locations I see addresses
>>more directly associated with Google Inc.
>
> Google obviously uses some kind of GeoIP setup to make its responses
> faster. Which makes the homework assignment even stupider. Why don't
> even teachers grok today's Internet any more?

Perhaps the teacher was not stupid but clever -- he outwitted most of
us on c.o.l.n ...

There's an interesting questions here: is this behavior allowed by the
standards around DNS?  And if not, is it de-facto standard to do it
anyway, for the giant sites?

/Jorgen

-- 
  // Jorgen Grahn <grahn@  Oo  o.   .     .
\X/     snipabacken.se>   O  o   .

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#3549

FromMarc Haber <mh+usenetspam1118@zugschl.us>
Date2015-10-18 20:30 +0200
Message-ID<n00off$9gl$1@news1.tnib.de>
In reply to#3547
Jorgen Grahn <grahn+nntp@snipabacken.se> wrote:
>There's an interesting questions here: is this behavior allowed by the
>standards around DNS?  And if not, is it de-facto standard to do it
>anyway, for the giant sites?

The standards were written before somebody thought about this. I don't
see why it would be forbidden, the reference implementations even
support this on a single instance, and it works like a charm.

Greetings
Marc
-- 
-------------------------------------- !! No courtesy copies, please !! -----
Marc Haber         |   " Questions are the         | Mailadresse im Header
Mannheim, Germany  |     Beginning of Wisdom "     | http://www.zugschlus.de/
Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834

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#3551

FromRichard Kettlewell <rjk@greenend.org.uk>
Date2015-10-18 19:35 +0100
Message-ID<871tcskotf.fsf@mantic.terraraq.uk>
In reply to#3549
Marc Haber <mh+usenetspam1118@zugschl.us> writes:
> Jorgen Grahn <grahn+nntp@snipabacken.se> wrote:
>>There's an interesting questions here: is this behavior allowed by the
>>standards around DNS?  And if not, is it de-facto standard to do it
>>anyway, for the giant sites?
>
> The standards were written before somebody thought about this. I don't
> see why it would be forbidden, the reference implementations even
> support this on a single instance, and it works like a charm.

It’s called split-horizon DNS, AFAIK people have been doing it for
longer than I’ve been on the Internet.

-- 
http://www.greenend.org.uk/rjk/

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#3544

FromWilliam Unruh <unruh@invalid.ca>
Date2015-10-18 17:31 +0000
Message-ID<n00l17$3ur$1@dont-email.me>
In reply to#3539
On 2015-10-18, Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
> Hi all,
>
> For a domain name / FQDN, say www.google.com , is there a method to 
> obtain all of the ip addresses corresponding it?

whois
why?

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#3546

FromLew Pitcher <lew.pitcher@digitalfreehold.ca>
Date2015-10-18 13:48 -0400
Message-ID<sXQUx.92380$DK7.68126@fx02.iad>
In reply to#3544
On Sunday October 18 2015 13:31, in comp.os.linux.networking, "William Unruh"
<unruh@invalid.ca> wrote:

> On 2015-10-18, Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>> Hi all,
>>
>> For a domain name / FQDN, say www.google.com , is there a method to
>> obtain all of the ip addresses corresponding it?
> 
> whois

Probably not, Bill.
"whois" gives the dns registration data, not the resolver data. In other
words, "whois" will tell you who registered google.com, and what addresses
the DNS servers have, but not necessarily anything about the addresses that a
specific name resoves to.

The OP may find "nslookup" a better choice. It can (and will) report the IP
addresses any specific fqdn resolves to.

-- 
Lew Pitcher
"In Skills, We Trust"
PGP public key available upon request

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#3548

FromWilliam Unruh <unruh@invalid.ca>
Date2015-10-18 18:22 +0000
Message-ID<n00o0o$fa8$1@dont-email.me>
In reply to#3546
On 2015-10-18, Lew Pitcher <lew.pitcher@digitalfreehold.ca> wrote:
> On Sunday October 18 2015 13:31, in comp.os.linux.networking, "William Unruh"
><unruh@invalid.ca> wrote:
>
>> On 2015-10-18, Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>>> Hi all,
>>>
>>> For a domain name / FQDN, say www.google.com , is there a method to
>>> obtain all of the ip addresses corresponding it?
>> 
>> whois
>
> Probably not, Bill.
> "whois" gives the dns registration data, not the resolver data. In other
> words, "whois" will tell you who registered google.com, and what addresses
> the DNS servers have, but not necessarily anything about the addresses that a
> specific name resoves to.
>
> The OP may find "nslookup" a better choice. It can (and will) report the IP
> addresses any specific fqdn resolves to.

IF he has specific names, then what you say is true. But he wanted to
know all of the computers under a certain domain I thought. 
Now, it is confusing, since www.google.com is not a domain, and an FQDN
is not a domain, so for looking up addresses corresponding to specific
names, I agree whois is not appropriate. The easiest is probable
ping -c 1 -w 1 name
which will show the IP corresponding to that name. (or course with
www.google.com it does not correspoind to a specific address-- they are
both location and time dependent. There are loads of Ip corresponding
to that name .) 
On the other hand if he wants to know what belongs to google.com then
whois at least give a hint. 
But as far as I know, there is nothing that says "these are all the
machines IPs that use say google.com as their domain name. I do not
think it is even possible. 

>

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#3550

FromRichard Kettlewell <rjk@greenend.org.uk>
Date2015-10-18 19:32 +0100
Message-ID<877fmkkoxs.fsf@mantic.terraraq.uk>
In reply to#3548
William Unruh <unruh@invalid.ca> writes:
> IF he has specific names, then what you say is true. But he wanted to
> know all of the computers under a certain domain I thought. 
> Now, it is confusing, since www.google.com is not a domain, and an FQDN
> is not a domain,

This is nonsense.  www.google.com is a domain name.  See RFC1034 for
terminology.

-- 
http://www.greenend.org.uk/rjk/

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#3552

FromBaho Utot <baho-utot@columbus.rr.com>
Date2015-10-18 16:45 -0400
Message-ID<51ddfc-lod.ln1@raspberry-pi.bildanet.com>
In reply to#3550
On 10/18/15 14:32, Richard Kettlewell wrote:
> William Unruh <unruh@invalid.ca> writes:
>> IF he has specific names, then what you say is true. But he wanted to
>> know all of the computers under a certain domain I thought.
>> Now, it is confusing, since www.google.com is not a domain, and an FQDN
>> is not a domain,
>
> This is nonsense.  www.google.com is a domain name.  See RFC1034 for
> terminology.
>

google.com is the domain name.

www.google.com is a host name.

www.google.com is NOT a domain name, that non-sense started with web 
masters/devs.

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#3553

FromLew Pitcher <lew.pitcher@digitalfreehold.ca>
Date2015-10-18 17:14 -0400
Message-ID<FYTUx.5327$vj4.1368@fx05.iad>
In reply to#3552
On Sunday October 18 2015 16:45, in comp.os.linux.networking, "Baho Utot"
<baho-utot@columbus.rr.com> wrote:

> On 10/18/15 14:32, Richard Kettlewell wrote:
>> William Unruh <unruh@invalid.ca> writes:
>>> IF he has specific names, then what you say is true. But he wanted to
>>> know all of the computers under a certain domain I thought.
>>> Now, it is confusing, since www.google.com is not a domain, and an FQDN
>>> is not a domain,
>>
>> This is nonsense.  www.google.com is a domain name.  See RFC1034 for
>> terminology.
>>
> 
> google.com is the domain name.

google.com is also a host name.

> www.google.com is a host name.

and, (if google were in the mood) www.google.com could be a domain name as
well.
 
> www.google.com is NOT a domain name,

Not that we know anyway. If we find such resolvable names as
canada.www.google.com or sales.www.google.com, then we know that
www.google.com is also a domain name.


To illustrate:
 - digitalfreehold.ca is a domain name.
 - digitalfreehold.ca is also a host name.
 - pitcher.digitalfreehold.ca is a host name
   within the digitalfreehold.ca domain

-- 
Lew Pitcher
"In Skills, We Trust"
PGP public key available upon request

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#3555

FromBaho Utot <baho-utot@columbus.rr.com>
Date2015-10-18 19:09 -0400
Message-ID<rdldfc-51e.ln1@raspberry-pi.bildanet.com>
In reply to#3553
On 10/18/15 17:14, Lew Pitcher wrote:
> On Sunday October 18 2015 16:45, in comp.os.linux.networking, "Baho Utot"
> <baho-utot@columbus.rr.com> wrote:
>
>> On 10/18/15 14:32, Richard Kettlewell wrote:
>>> William Unruh <unruh@invalid.ca> writes:
>>>> IF he has specific names, then what you say is true. But he wanted to
>>>> know all of the computers under a certain domain I thought.
>>>> Now, it is confusing, since www.google.com is not a domain, and an FQDN
>>>> is not a domain,
>>>
>>> This is nonsense.  www.google.com is a domain name.  See RFC1034 for
>>> terminology.
>>>
>>
>> google.com is the domain name.
>
> google.com is also a host name.
>
>> www.google.com is a host name.
>
> and, (if google were in the mood) www.google.com could be a domain name as
> well.
>
>> www.google.com is NOT a domain name,
>
> Not that we know anyway. If we find such resolvable names as
> canada.www.google.com or sales.www.google.com, then we know that
> www.google.com is also a domain name.
>
>
> To illustrate:
>   - digitalfreehold.ca is a domain name.
>   - digitalfreehold.ca is also a host name.

digitalfreehold.ca should not be both a host name and domain name.

That non sense goes back to "our web master fiends" sometime around 1995

>   - pitcher.digitalfreehold.ca is a host name
>     within the digitalfreehold.ca domain
>

Yes

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#3557

FromLew Pitcher <lew.pitcher@digitalfreehold.ca>
Date2015-10-18 20:22 -0400
Message-ID<5JWUx.167035$nK6.35862@fx31.iad>
In reply to#3555
On Sunday October 18 2015 19:09, in comp.os.linux.networking, "Baho Utot"
<baho-utot@columbus.rr.com> wrote:

> On 10/18/15 17:14, Lew Pitcher wrote:
>> On Sunday October 18 2015 16:45, in comp.os.linux.networking, "Baho Utot"
>> <baho-utot@columbus.rr.com> wrote:
>>
>>> On 10/18/15 14:32, Richard Kettlewell wrote:
>>>> William Unruh <unruh@invalid.ca> writes:
>>>>> IF he has specific names, then what you say is true. But he wanted to
>>>>> know all of the computers under a certain domain I thought.
>>>>> Now, it is confusing, since www.google.com is not a domain, and an FQDN
>>>>> is not a domain,
>>>>
>>>> This is nonsense.  www.google.com is a domain name.  See RFC1034 for
>>>> terminology.
>>>>
>>>
>>> google.com is the domain name.
>>
>> google.com is also a host name.
>>
>>> www.google.com is a host name.
>>
>> and, (if google were in the mood) www.google.com could be a domain name as
>> well.
>>
>>> www.google.com is NOT a domain name,
>>
>> Not that we know anyway. If we find such resolvable names as
>> canada.www.google.com or sales.www.google.com, then we know that
>> www.google.com is also a domain name.
>>
>>
>> To illustrate:
>>   - digitalfreehold.ca is a domain name.
>>   - digitalfreehold.ca is also a host name.
> 
> digitalfreehold.ca should not be both a host name and domain name.

Sorry, but your opinion differs from reality.

> That non sense goes back to "our web master fiends" sometime around 1995

Nonsense? No.


[snip]

-- 
Lew Pitcher
"In Skills, We Trust"
PGP public key available upon request

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#3558

FromLew Pitcher <lew.pitcher@digitalfreehold.ca>
Date2015-10-18 20:41 -0400
Message-ID<l%WUx.44307$Bl2.29128@fx27.iad>
In reply to#3555
On Sunday October 18 2015 19:09, in comp.os.linux.networking, "Baho Utot"
<baho-utot@columbus.rr.com> wrote:

> On 10/18/15 17:14, Lew Pitcher wrote:
>> On Sunday October 18 2015 16:45, in comp.os.linux.networking, "Baho Utot"
>> <baho-utot@columbus.rr.com> wrote:
>>
>>> On 10/18/15 14:32, Richard Kettlewell wrote:
>>>> William Unruh <unruh@invalid.ca> writes:
>>>>> IF he has specific names, then what you say is true. But he wanted to
>>>>> know all of the computers under a certain domain I thought.
>>>>> Now, it is confusing, since www.google.com is not a domain, and an FQDN
>>>>> is not a domain,
>>>>
>>>> This is nonsense.  www.google.com is a domain name.  See RFC1034 for
>>>> terminology.
>>>>
>>>
>>> google.com is the domain name.
>>
>> google.com is also a host name.
>>
>>> www.google.com is a host name.
>>
>> and, (if google were in the mood) www.google.com could be a domain name as
>> well.
>>
>>> www.google.com is NOT a domain name,
>>
>> Not that we know anyway. If we find such resolvable names as
>> canada.www.google.com or sales.www.google.com, then we know that
>> www.google.com is also a domain name.
>>
>>
>> To illustrate:
>>   - digitalfreehold.ca is a domain name.
>>   - digitalfreehold.ca is also a host name.
> 
> digitalfreehold.ca should not be both a host name and domain name.

You (or, perhaps, I) seem to have a fundamental misunderstanding about DNS,
domain names, and host names.

So, let's go back to the RFCs

RFC 1034 ("DOMAIN NAMES - CONCEPTS AND FACILITIES") says
  "The domain name space is a tree structure.  Each node and leaf on the
   tree corresponds to a resource set (which may be empty).  The domain
   system makes no distinctions between the uses of the interior nodes and
   leaves, and this memo uses the term "node" to refer to both."
and
  "The domain name of a node is the list of the labels on the path from the
   node to the root of the tree.  By convention, the labels that compose a
   domain name are printed or read left to right, from the most specific
   (lowest, farthest from the root) to the least specific (highest, closest
   to the root)."

so, the "www.google.com" represents a specific node in the domain name space,
as does "google.com". 

Further
  "A domain is identified by a domain name, and consists of that part of
   the domain name space that is at or below the domain name which
   specifies the domain.  A domain is a subdomain of another domain if it
   is contained within that domain.  This relationship can be tested by
   seeing if the subdomain's name ends with the containing domain's name.
   For example, A.B.C.D is a subdomain of B.C.D, C.D, D, and " "."

So, "www.google.com" is a domain, /and/ a subdomain of the
domain "google.com".


Each of these domain nodes may have a resource set; a set of properties (such
as mail exchanger or ip address). Thus "www.google.com" may have an IP
address, /and/ "google.com" may have an IP address.

There is no requirement that a node /have/ any particular resource set, or
that a node should have no resources. Both leaf nodes /and/ branch nodes may
have (or not) such resources as IP addresses or mail exchanges.

So,
  digitalfreehold.ca is a valid domain, by RFC 1034's requirements.
  digitalfreehold.ca can have an IP address, as per RFC 1034, making
    it a host, as well as a domain.
  pitcher.digitalfreehold.ca is also a valid domain, a subdomain of
    digitalfreehold.ca, and also can have an IP address, as per RFC 1034,
    making it a host, as well as a domain and a subdomain.


-- 
Lew Pitcher
"In Skills, We Trust"
PGP public key available upon request

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#3565

FromRick Jones <rick.jones2@hp.com>
Date2015-10-19 20:56 +0000
Message-ID<n03lde$l7o$1@usenet01.boi.hp.com>
In reply to#3558
Lew Pitcher <lew.pitcher@digitalfreehold.ca> wrote:
> So,
>   digitalfreehold.ca is a valid domain, by RFC 1034's requirements.
>   digitalfreehold.ca can have an IP address, as per RFC 1034, making
>     it a host, as well as a domain.
>   pitcher.digitalfreehold.ca is also a valid domain, a subdomain of
>     digitalfreehold.ca, and also can have an IP address, as per RFC 1034,
>     making it a host, as well as a domain and a subdomain.

Shimmer!

https://screen.yahoo.com/shimmer-floor-wax-000000185.html

rick jones
-- 
web2.0 n, the dot.com reunion tour...
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

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#3554

FromRichard Kettlewell <rjk@greenend.org.uk>
Date2015-10-18 22:25 +0100
Message-ID<87pp0bkgxk.fsf@mantic.terraraq.uk>
In reply to#3552
Baho Utot <baho-utot@columbus.rr.com> writes:
> On 10/18/15 14:32, Richard Kettlewell wrote:
>> William Unruh <unruh@invalid.ca> writes:
>>> IF he has specific names, then what you say is true. But he wanted to
>>> know all of the computers under a certain domain I thought.
>>> Now, it is confusing, since www.google.com is not a domain, and an FQDN
>>> is not a domain,
>>
>> This is nonsense.  www.google.com is a domain name.  See RFC1034 for
>> terminology.
>
> google.com is the domain name.
>
> www.google.com is a host name.
>
> www.google.com is NOT a domain name, that non-sense started with web
> masters/devs.

Obviously you didn’t follow the suggestion to see RFC1034.

-- 
http://www.greenend.org.uk/rjk/

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#3556

FromBaho Utot <baho-utot@columbus.rr.com>
Date2015-10-18 19:04 -0400
Message-ID<g5ldfc-21e.ln1@raspberry-pi.bildanet.com>
In reply to#3554
On 10/18/15 17:25, Richard Kettlewell wrote:
> Baho Utot <baho-utot@columbus.rr.com> writes:
>> On 10/18/15 14:32, Richard Kettlewell wrote:
>>> William Unruh <unruh@invalid.ca> writes:
>>>> IF he has specific names, then what you say is true. But he wanted to
>>>> know all of the computers under a certain domain I thought.
>>>> Now, it is confusing, since www.google.com is not a domain, and an FQDN
>>>> is not a domain,
>>>
>>> This is nonsense.  www.google.com is a domain name.  See RFC1034 for
>>> terminology.
>>
>> google.com is the domain name.
>>
>> www.google.com is a host name.
>>
>> www.google.com is NOT a domain name, that non-sense started with web
>> masters/devs.
>
> Obviously you didn’t follow the suggestion to see RFC1034.
>
Obviously you didn’t understand RFC1034

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