[OT] Rogers DNS Games? I Can't Access craigslist.org

Fri Nov 21 15:28:18 UTC 2008

Meng Cheah wrote:
> James Knott wrote:
>> Stephen wrote:
>>> I have Roger's as my ISP.
>>>
>>> All of my Internet functions work fine.
>>>
>>> I can access web sites, all except craigslist.org
>>>
>>> Firefox reports the connection was refused.
>>>
>>> I ping, the name resolves, but I get no response.
>>>
>>> I try with IE (Beta) and get flipped over to Google and the results 
>>> of a search for craigslist.org
>>>
>>> Safari reports that it could not connect to the server.
>>>
>>> What is really strange is that this link works: 
>>> https://accounts.craigslist.org/login
>>>
>>> The Rogers tech verified that the site was up and created a trouble 
>>> ticket.
>>>
>>> Anyone have any ideas on this?
>>
>> I can ping it, via my Rogers account.  It's likely their server 
>> problem if the name resolves to the correct address.  You could try 
>> traceroute to see where it goes.  Bear in mind, Rogers does not 
>> maintain the records for hosts that are outside of their network.  
>> When a DNS request is made to their DNS servers, they refer to a more 
>> authoritative DNS server.  It may take multiple attempts, working up 
>> through the .org (or other) root server, which then points to a DNS 
>> server that's closer to the target.  Rogers may then temporarily cache 
>> that DNS info.  Bottom line, if other lookups work fine, it's likely 
>> not the Rogers DNS server.
> 
> Here's my traceroute:
> 
> traceroute 208.82.236.208
> traceroute to 208.82.236.208 (208.82.236.208), 30 hops max, 40 byte packets
> 1  erx02.tor.pppoe.ca (206.248.154.120)  195.200 ms  169.321 ms  236.154 ms
> 2  ae0-2110.border2.pppoe.ca (69.196.136.7)  202.957 ms  132.333 ms  
> 44.898 ms
> 3  xe-3-1-0-11.tor11.ip.tiscali.net (77.67.68.125)  143.781 ms  165.459 
> ms  126                                                .374 ms
> 4  xe-2-0-0.was12.ip.tiscali.net (89.149.185.9)  210.679 ms  246.306 ms 
> 89.149.                                                185.5 
> (89.149.185.5)  210.952 ms
> 5  dcp-brdr-03.inet.qwest.net (63.146.26.9)  280.056 ms 
> dcp-brdr-03.inet.qwest.                                                
> net (63.146.26.13)  375.944 ms  358.438 ms
> 6  phn-core-02.inet.qwest.net (67.14.19.42)  411.853 ms 
> phn-core-01.inet.qwest.                                                
> net (67.14.19.38)  327.658 ms phn-core-02.inet.qwest.net (67.14.19.42)  
> 220.359                                                 ms
> 7  scd-edge-01.inet.qwest.net (205.171.12.46)  266.405 ms  392.415 ms 
> scd-edge-                                                
> 01.inet.qwest.net (205.171.12.42)  517.973 ms
> 8  rtr-qwest-iophx.craigslist.org (65.101.69.178)  484.931 ms  329.948 
> ms  412.                                                961 ms
> 9  * 208-236-82.208.craigslist.org (208.82.236.208)  353.266 ms  399.805 ms
> meng at nemesis:~$ traceroute craigslist.org
> traceroute to craigslist.org (208.82.236.208), 30 hops max, 40 byte packets
> 1  erx02.tor.pppoe.ca (206.248.154.120)  357.863 ms  394.322 ms  421.798 ms
> 2  ae0-2110.border2.pppoe.ca (69.196.136.7)  265.821 ms  333.014 ms  
> 427.311 ms
> 3  xe-3-1-0-11.tor11.ip.tiscali.net (77.67.68.125)  335.023 ms  206.407 
> ms  96.789 ms
> 4  xe-2-0-0.was12.ip.tiscali.net (89.149.185.9)  153.784 ms 
> xe-1-0-0.was12.ip.tiscali.net (89.149.185.5)  81.118 ms 
> xe-2-0-0.was12.ip.tiscali.net (89.149.185.9)  204.482 ms
> 5  dcp-brdr-03.inet.qwest.net (63.146.26.13)  185.160 ms 
> dcp-brdr-03.inet.qwest.net (63.146.26.9)  291.720 ms  254.131 ms
> 6  phn-core-02.inet.qwest.net (67.14.19.42)  355.035 ms  311.311 ms 
> phn-core-01.inet.qwest.net (67.14.19.38)  309.362 ms
> 7  scd-edge-01.inet.qwest.net (205.171.12.46)  289.064 ms 
> scd-edge-01.inet.qwest.net (205.171.12.42)  305.148 ms 
> scd-edge-01.inet.qwest.net (205.171.12.46)  326.755 ms
> 8  rtr-qwest-iophx.craigslist.org (65.101.69.178)  171.522 ms  137.832 
> ms  236.595 ms
> 9  208-236-82.208.craigslist.org (208.82.236.208)  202.878 ms  181.636 
> ms  258.012 ms
> 
> Can someone explain why 208-236-82.208.craigslist.org (208.82.236.208) ?
> Why the hyphens?
> 
> Regards
> 
> Meng

It appears to me the host name contains those numbers and hyphens.  It 
is not an IP address.  The IP address does not contain any hyphens.

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