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| Message-ID | <1928083.5czRgZtFYk@PointedEars.de> (permalink) |
|---|---|
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
| Organization | PointedEars Software (PES) |
| Date | 2013-03-26 11:42 +0100 |
| Subject | Re: how to save the visitors ip addresses |
| Newsgroups | comp.lang.php |
| References | (2 earlier) <1qr1l85lv7bj096gsal8l9js388fuiq7fp@4ax.com> <kiquk9$218$1@dont-email.me> <v812l8pi1cfimjou51kvn5mp2oade67r6h@4ax.com> <kir4fh$n92$1@dont-email.me> <timstreater-4016D2.09103926032013@news.individual.net> |
Tim Streater wrote:
> Jerry Stuckle <jstucklex@attglobal.net> wrote:
>> Sure, the ISP is assigned a block of IPs. But the ISP may have as
>> little as 1 IP assigned, or as many as 16 million out of the same block.
>> […]
>> The ISP would have to have 200K IPs. This could be part of a Class A
>> block or multiple Class B blocks. But if they have 500,000 customers,
>> they will definitely have more than one Class B block. However, they
>> would not need 500,000 IP addresses - that's what DHCP is really about.
>> Assign the IP address only when it is needed.
>
> Why are you talking about Class A, B, or C? These are concepts that were
> abandoned in the 90s, with the introduction of CIDR. It's true that
> prior to that, blocks were allocated in that way, but not any longer.
Classless Inter-Domain Routing (CIDR) did _not_ supersede class-based IP
address ranges in 1993. However, that is also one reason why IPv4 addresses
are about to run out [1], why registries are beginning to assign non-class-
based ranges [2], and why ultimately migration to IPv6 is important to the
continued operation of the Internet.
I refer you to <http://www.iana.org/numbers> pp. to clarify your
misconceptions.
PointedEars
___________
[1] <http://en.wikipedia.org/wiki/IPv4_address_exhaustion>
[2] <http://www.ripe.net/internet-coordination/ipv4-exhaustion/reaching-the-
last-8>
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how to save the visitors ip addresses nag <visitnag@gmail.com> - 2013-03-25 01:44 -0700
Re: how to save the visitors ip addresses "Olaf S." <thesys@gmx.de> - 2013-03-25 12:11 +0100
Re: how to save the visitors ip addresses Salvatore <sal@yojimbo.hack.invalid> - 2013-03-25 11:13 +0000
Re: how to save the visitors ip addresses nag <visitnag@gmail.com> - 2013-03-25 04:36 -0700
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 08:28 -0400
Re: how to save the visitors ip addresses Tim Streater <timstreater@greenbee.net> - 2013-03-25 12:42 +0000
Re: how to save the visitors ip addresses Scott Johnson <noonehome@chalupasworld.com> - 2013-03-25 06:02 -0700
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-25 13:09 +0000
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 09:26 -0400
Re: how to save the visitors ip addresses Scott Johnson <noonehome@chalupasworld.com> - 2013-03-25 09:55 -0700
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-26 01:44 +0000
Re: how to save the visitors ip addresses Tim Streater <timstreater@greenbee.net> - 2013-03-25 13:34 +0000
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-25 14:54 +0000
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 13:24 -0400
Re: how to save the visitors ip addresses Scott Johnson <noonehome@chalupasworld.com> - 2013-03-25 10:03 -0700
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-26 01:57 +0000
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 13:25 -0400
Re: how to save the visitors ip addresses Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-25 19:15 +0100
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 09:22 -0400
Re: how to save the visitors ip addresses Richard Damon <Richard@Damon-Family.org> - 2013-03-27 01:29 -0400
Re: how to save the visitors ip addresses richard <noreply@example.com> - 2013-03-25 19:39 -0400
Re: how to save the visitors ip addresses "Beauregard T. Shagnasty" <a.nony.mous@example.invalid> - 2013-03-26 00:21 +0000
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 20:55 -0400
Re: how to save the visitors ip addresses Paul Herber <paul@pherber.com> - 2013-03-26 01:01 +0000
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-26 02:10 +0000
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-26 02:01 +0000
Re: how to save the visitors ip addresses "Beauregard T. Shagnasty" <a.nony.mous@example.invalid> - 2013-03-26 03:10 +0000
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-26 15:18 +0000
Re: how to save the visitors ip addresses Evan Platt <evan@theobvious.espphotography.com.invalid> - 2013-03-25 22:39 -0700
Re: how to save the visitors ip addresses Evan Platt <evan@theobvious.espphotography.com.invalid> - 2013-03-25 18:31 -0700
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 21:47 -0400
Re: how to save the visitors ip addresses Evan Platt <evan@theobvious.espphotography.com.invalid> - 2013-03-25 19:34 -0700
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 23:27 -0400
Re: how to save the visitors ip addresses Tim Streater <timstreater@greenbee.net> - 2013-03-26 09:10 +0000
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-26 06:16 -0400
Re: how to save the visitors ip addresses Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-26 11:42 +0100
Re: how to save the visitors ip addresses Tim Streater <timstreater@greenbee.net> - 2013-03-26 11:47 +0000
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-25 23:38 -0400
Re: how to save the visitors ip addresses Evan Platt <evan@theobvious.espphotography.com.invalid> - 2013-03-25 21:13 -0700
Re: how to save the visitors ip addresses Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-26 06:16 -0400
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-26 15:10 +0000
Re: how to save the visitors ip addresses The Natural Philosopher <tnp@invalid.invalid> - 2013-03-26 01:43 +0000
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