Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Mike Easter Newsgroups: comp.os.linux.networking,alt.comp.freeware,alt.internet.wireless Subject: Re: Frustrated that I don't UNDERSTAND why my network times out Date: Sun, 13 Oct 2013 14:27:13 -0700 Lines: 41 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: individual.net YdCJu3khmA/ds873LluZqgmYf2/zzwAIKQWdHdlKYZhEwayjWw Cancel-Lock: sha1:Dra/UEkx8Ahnu97jsTfE4V7VtaU= User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.0 In-Reply-To: Xref: csiph.com comp.os.linux.networking:2529 ps56k wrote: > weird - yup - > it times out from my network - and other "online testing sites" - > so... ???? > > Ping - centos.org - 85.12.30.227 --> Amsterdam location That is the correct IP. > Ping - www.centos.org - 72.232.194.162 ---> ???? That is not the correct IP resolution according to google's DNS. That is, www.centos.org resolves to 85.12.30.227 but 85.12.30.227 does not rDNS to www.centos.org However, 72.232.194.162 rDNS to www.centos.org which does not resolve to 72.232.194.162 > their TCP/IP world seems messed up somewhere within their DNS records - The DNSreport on centos.org says the MX, SOA, WWW, are all OK but the Parent nameservice fails on one dns report but not another. Parent Failed Parent nameservers centos.org Your NS records at the parent server are: Failed Nameservers for domain in DNS centos.org Your NS records at your nameservers are: However, my dig worked OK showing ns1, ns3, & ns4.centos.org and their IPs and all 3 nameservers produced the MXes etc. The report at mxtoolbox said the ns at the parent was OK, but then the information said it was not. I don't understand this inconsistency in the parent DNS status for centos.org. -- Mike Easter