<div>Hi all,</div><div><br></div><div>Our research group has been looking at assessing anycast usage.</div><div>(We have a technical report about our early findings at</div><div><a href="ftp://ftp.isi.edu/isi-pubs/tr-671.pdf">ftp://ftp.isi.edu/isi-pubs/tr-671.pdf</a> if you're interested.)</div>
<div><br></div><div>Now we are testing our new method by sending</div><div>DNS queries of name "<a href="http://hostname.as112.net">hostname.as112.net</a>" to a lot of open recursive name servers to</div><div>find how many different AS112 nodes we can find in the Internet.</div>
<div>We evaluate the results through the operators list at</div><div><a href="http://public.as112.net/node/10">http://public.as112.net/node/10</a></div><div><br></div><div>We understand that the list is not complete, but as its last update was</div>
<div>less than a month ago, we have two questions:</div><div><br></div><div>1. Does it mean that ALL the operators in the list (<a href="http://public.as112.net/node/10">http://public.as112.net/node/10</a>) </div><div>were running AS112 service at the last update time (Dec 22nd, 2011)?</div>
<div><br></div><div>2. If not, does anyone know if the following operators in the list</div><div>are still running AS112 service?</div><div> - Abovenet Communications, Inc</div><div> - Cogent Communications</div><div> - Hurricane Electric</div>
<div> - New Jersey International Internet Exchange, Inc</div><div> - Teleglobe Inc. (current owner seems to be Tata Communications)</div><div>We have recursive name servers in these operators' IP block, but</div><div>
those recursive name servers led us to other AS112 nodes, so we</div><div>suspect they might have turned off their AS112 nodes.</div><div><br></div><div>Thank you very much!</div>