We have transit through AS209(Qwest/CL), AS701(VZ), and AS7018(ATT). While AS7018 peers directly with Comcast, AS209 and AS701 are only reachable from Comcast via TATA (formerly Teleglobe) AS6453. We are unable to reach any of our prefixes that have to transit AS6453. Reachable via AS209 or AS701: ============================================================== traceroute to www.exantebankbis.com (168.183.130.50), 30 hops max, 40 byte packets 1 leviathan (192.168.0.1) 0.177 ms 0.212 ms 0.211 ms 2 173-8-x-x-Minnesota.hfc.comcastbusiness.net (173.8.x.x) 0.685 ms 1.092 ms 1.424 ms 3 73.205.28.1 (73.205.28.1) 8.518 ms 9.500 ms 11.392 ms 4 te-4-2-ur02.brooklynpark.mn.minn.comcast.net (68.85.165.181) 14.241 ms 14.593 ms 14.899 ms 5 te-8-3-ur01.brooklynpark.mn.minn.comcast.net (68.87.174.25) 13.253 ms 14.487 ms 14.692 ms 6 te-0-2-0-7-ar01.crosstown.mn.minn.comcast.net (68.87.174.245) 20.913 ms 21.416 ms 21.523 ms 7 te-0-1-0-2-ar01.roseville.mn.minn.comcast.net (69.139.176.174) 17.644 ms 18.191 ms 18.185 ms 8 pos-0-13-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.73) 27.098 ms 22.970 ms 25.999 ms 9 * * * 10 * * * 11 * * * 12 * * * 13 * * * 14 * * * 15 * * * 16 * * * ============================================================== Reachable via AS7018: ============================================================== traceroute to custinst3.exantebankbis.com (168.183.144.100), 30 hops max, 40 byte packets 1 leviathan (192.168.0.1) 0.167 ms 0.162 ms 0.200 ms 2 173-8-x-x-Minnesota.hfc.comcastbusiness.net (173.8.x.x) 0.764 ms 1.179 ms 1.407 ms 3 73.205.28.1 (73.205.28.1) 10.048 ms 11.169 ms 11.384 ms 4 te-4-2-ur01.brooklynpark.mn.minn.comcast.net (68.85.165.177) 11.570 ms 11.699 ms 11.823 ms 5 te-0-2-0-6-ar01.crosstown.mn.minn.comcast.net (68.87.174.21) 20.859 ms 21.068 ms 21.203 ms 6 te-0-1-0-0-ar01.roseville.mn.minn.comcast.net (68.87.174.2) 14.887 ms 18.349 ms 19.320 ms 7 pos-0-13-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.73) 26.212 ms 26.568 ms 26.501 ms 8 pos-1-2-0-0-pe01.350ecermak.il.ibone.comcast.net (68.86.86.78) 26.531 ms 66.968 ms 67.172 ms 9 192.205.37.21 (192.205.37.21) 66.352 ms 66.284 ms 66.546 ms 10 cr2.cgcil.ip.att.net (12.122.132.158) 67.642 ms 67.747 ms 68.009 ms 11 cr1.n54ny.ip.att.net (12.122.1.1) 68.480 ms 68.365 ms 68.535 ms 12 cr83.n54ny.ip.att.net (12.122.105.50) 66.645 ms 66.430 ms 66.512 ms 13 gar20.n54ny.ip.att.net (12.122.131.249) 67.271 ms 67.009 ms 42.918 ms 14 12.88.161.114 (12.88.161.114) 46.082 ms 46.853 ms 46.850 ms 15 168.183.148.29 (168.183.148.29) 46.618 ms 46.778 ms * 16 * * * 17 * * * 18 * * * 19 * * * 20 * custinst3.exantebankbis.com (168.183.144.100) 40.997 ms 46.641 ms ============================================================== My strong suspicion at this time is that it's an issue with AS6453, or at least the peering between AS7922 and AS6453. -Eric