Wikipedia DNS problem confined to Plusnet?
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Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:05 PM
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Anyone else seeing this problem? Does Plusnet have some kind of DNS caching issue with en.wikipedia.org at the moment please?
aoakley@khepri:~$ date
Thu Jul 17 11:59:28 BST 2014
aoakley@khepri:~$ host en.wikipedia.org
Host en.wikipedia.org not found: 3(NXDOMAIN)
aoakley@khepri:~$ host wikipedia.org
wikipedia.org has address 208.80.154.224
wikipedia.org has IPv6 address 2620:0:861:ed1a::1
wikipedia.org mail is handled by 10 polonium.wikimedia.org.
wikipedia.org mail is handled by 50 lead.wikimedia.org.
aoakley@khepri:~$ host en.wikipedia.org
Host en.wikipedia.org not found: 3(NXDOMAIN)
Am I being blocked from using Wikipedia?
17-07-2014 12:13 PM
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Many thanks
Rob
Re: Am I being blocked from using Wikipedia?
17-07-2014 12:17 PM
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Re: Am I being blocked from using Wikipedia?
17-07-2014 12:20 PM
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Re: Am I being blocked from using Wikipedia?
17-07-2014 12:22 PM
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Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:25 PM
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212.159.6.9
212.159.6.10
212.159.13.49
Strangely Plusnets dns server 212.159.13.50 does resolve the address.
No problem with other dns servers I've tried.
Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:26 PM
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Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:38 PM
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http://www.reddit.com/r/techsupport/comments/2ax0qd/isp_blocking_wikipedia/
Enterprise Architect - Network & OSS
Plusnet Technology
Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:39 PM
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You can access wikipedia.org by entering the following IP address in the browsers address bar.
91.198.174.192
Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:43 PM
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C:\Windows\System32>nslookup en.wikipedia.org 212.159.6.10
Server: cdns02.plus.net
Address: 212.159.6.10
Non-authoritative answer:
Name: text-lb.esams.wikimedia.org
Addresses: 2620:0:862:ed1a::1
91.198.174.192
Aliases: en.wikipedia.org
text-lb.wikimedia.org
C:\Windows\System32>nslookup en.wikipedia.org 212.159.6.9
Server: cdns01.plus.net
Address: 212.159.6.9
Non-authoritative answer:
Name: text-lb.esams.wikimedia.org
Addresses: 2620:0:862:ed1a::1
91.198.174.192
Aliases: en.wikipedia.org
text-lb.wikimedia.org
C:\Windows\System32>nslookup en.wikipedia.org 212.159.13.49
Server: cdns01.plus.net
Address: 212.159.13.49
Name: text-lb.esams.wikimedia.org
Address: 2620:0:862:ed1a::1
Aliases: en.wikipedia.org
text-lb.wikimedia.org
C:\Windows\System32>nslookup en.wikipedia.org 212.159.13.50
Server: cdns02.plus.net
Address: 212.159.13.50
Non-authoritative answer:
Name: text-lb.esams.wikimedia.org
Addresses: 2620:0:862:ed1a::1
91.198.174.192
Aliases: en.wikipedia.org
text-lb.wikimedia.org
Interesting Reddit article. Looks like we might not be the only ones with 'defective' DNS servers
I shall have somebody take a more detailed look into things regardless.
Bob Pullen
Plusnet Product Team
If I've been helpful then please give thanks ⤵
Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:46 PM
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It would appear that Plusnet's "alternative set" of domain name servers are at fault. My router appears to use these. I'm not going to attempt to remotely reconfigure my home router whilst at work, but those more at home (literally) than I may wish to try changing their router's DNS from .6.9 / .6.10 to 212.159.13.49 and 212.159.13.50 .
aoakley@khepri:~$ date
Thu Jul 17 12:42:01 BST 2014
aoakley@khepri:~$ host en.wikipedia.org
Host en.wikipedia.org not found: 3(NXDOMAIN)
aoakley@khepri:~$ host en.wikipedia.org 212.159.13.49
Using domain server:
Name: 212.159.13.49
Address: 212.159.13.49#53
Aliases:
en.wikipedia.org is an alias for text-lb.wikimedia.org.
text-lb.wikimedia.org is an alias for text-lb.esams.wikimedia.org.
text-lb.esams.wikimedia.org has address 91.198.174.192
text-lb.esams.wikimedia.org has IPv6 address 2620:0:862:ed1a::1
aoakley@khepri:~$ host en.wikipedia.org 212.159.13.50
Using domain server:
Name: 212.159.13.50
Address: 212.159.13.50#53
Aliases:
en.wikipedia.org is an alias for text-lb.wikimedia.org.
text-lb.wikimedia.org is an alias for text-lb.esams.wikimedia.org.
text-lb.esams.wikimedia.org has address 91.198.174.192
text-lb.esams.wikimedia.org has IPv6 address 2620:0:862:ed1a::1
aoakley@khepri:~$ host en.wikipedia.org 212.159.6.9
Using domain server:
Name: 212.159.6.9
Address: 212.159.6.9#53
Aliases:
Host en.wikipedia.org not found: 3(NXDOMAIN)
aoakley@khepri:~$ host en.wikipedia.org 212.159.6.10
Using domain server:
Name: 212.159.6.10
Address: 212.159.6.10#53
Aliases:
Host en.wikipedia.org not found: 3(NXDOMAIN)
Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:51 PM
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Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 12:55 PM
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sky broadband users also having this issue (as well as BT).
Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 1:00 PM
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There's plenty of grumbling on Twitter from users of other ISPs (that's in addition to the Reddit thread linked up there ^^^). Admittedly, they've not been perfect in the past, but people seem to be very quick to point the finger at our DNS servers
Bob Pullen
Plusnet Product Team
If I've been helpful then please give thanks ⤵
Re: Wikipedia DNS problem confined to Plusnet?
17-07-2014 1:17 PM
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Quote from: Bob Admittedly, they've not been perfect in the past, but people seem to be very quick to point the finger at our DNS servers
I wonder why that is.
Still not seeing a problem with opendns, google dns or the root servers.
Level3 dns is giving a suspect IP address so there may be something in the dns poisoning theory.
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