According to the status page (http://status.cogentco.com) there's nothing going on, but from AS53347 our monitoring system hasn't been able to reliably pull www.cogentco.com over IPv4 and IPv6 (since 8:15 pm Central) nor ipv6.cogentco.com (same address as the AAAA for www.cogentco.com). From a jump box that's on NTT's network I was able to load www.cogentco.com over IPv4, but I can't load it over IPv6 (get a "No data received") or it takes a very long time. Frank
From AS53347:
root@nagios:/etc# tcptraceroute www.cogentco.com Selected device eth0.3, address 96.31.0.5, port 55934 for outgoing packets Tracing the path to www.cogentco.com (38.100.128.10) on TCP port 80 (www), 30 hops max 1 router-core-inside.mtcnet.net (96.31.0.254) 0.256 ms 0.200 ms 0.200 ms 2 sxct.sxcy.mtcnet.net (167.142.156.197) 0.188 ms 0.124 ms 0.120 ms 3 premier.sxcy-mlx.fbnt.netins.net (173.215.60.5) 1.672 ms 1.667 ms 1.597 ms 4 ins-db4-et-0-7-0-0.desm.netins.net (167.142.67.198) 7.933 ms 7.753 ms 7.659 ms 5 ins-dc2-et-9-4.desm.netins.net (167.142.67.197) 7.899 ms 7.934 ms 7.958 ms 6 te0-0-1-1.rcr11.dsm01.atlas.cogentco.com (38.104.184.25) 7.889 ms 7.965 ms 7.897 ms 7 te0-2-0-0.ccr41.ord01.atlas.cogentco.com (154.54.46.237) 15.095 ms 15.216 ms 15.077 ms 8 be2351.ccr21.cle04.atlas.cogentco.com (154.54.44.86) 23.406 ms 23.469 ms 23.863 ms 9 be2485.mpd21.dca01.atlas.cogentco.com (154.54.30.18) 35.619 ms 36.489 ms 35.699 ms 10 * * * 11 * * * 12 * * cogentco.sg (38.100.128.10) [open] 47.213 ms root@nagios:/etc# tcptraceroute6 www.cogentco.com traceroute to cogentco.com (2001:550:1::cc01) from 2607:fe28:0:1000::5, port 80, from port 40783, 30 hops max, 60 bytes packets 1 router-core.mtcnet.net (2607:fe28:0:1000::1) 0.230 ms 0.216 ms 0.204 ms 2 sxct.sxcy.mtcnet.net (2607:fe28:11:1002::197) 0.201 ms 0.130 ms 0.127 ms 3 v6-premier.sxcy-mlx.fbnt.netins.net (2001:5f8:7f0a:2::1) 1.604 ms 1.587 ms 1.598 ms 4 v6-ins-db4-te-0-6-0-4-219.desm.netins.net (2001:5f8:1:1::1) 8.139 ms 7.777 ms 8.205 ms 5 v6-ins-dc2-lo0.desm.netins.net (2001:5f8::5) 7.992 ms 7.959 ms 7.970 ms 6 2001:550:2:24::9:1 (2001:550:2:24::9:1) 8.053 ms 7.954 ms 8.100 ms 7 te0-2-0-0.ccr41.ord01.atlas.cogentco.com (2001:550:0:1000::9a36:2eed) 15.226 ms 15.371 ms 15.153 ms 8 be2351.ccr21.cle04.atlas.cogentco.com (2001:550:0:1000::9a36:2c56) 22.562 ms 22.777 ms 22.460 ms 9 be2485.mpd21.dca01.atlas.cogentco.com (2001:550:0:1000::9a36:1e12) 35.259 ms 35.377 ms 35.435 ms 10 te2-8.ccr01.iad03.atlas.cogentco.com (2001:550:0:1000::9a36:29fe) 35.191 ms 35.144 ms 35.335 ms 11 te2-1.mag01.iad03.atlas.cogentco.com (2001:550:0:1000::9a36:563e) 35.129 ms 35.171 ms 35.129 ms 12 * cogentco.com (2001:550:1::cc01) 47.093 ms [open] * root@nagios:/etc#