I'm new to this list, and I apologize in advance if this is an inappropriate submission. I'm having an issue with my traffic routing between my network and Comcast in the Georgia region. Aside from this specific ISP and that geographic region, I haven't seen any issues with traffic. My network is 198.91.24.0/21 ASN 32647 Is there a particular contact to get in touch with someone at Comcast for assistance? What can I do, if anything, to resolve this from my end? Here is a successful traceroute, which doesn't originate from my network, going to a router I'd like to reach from my network. This network shares our upstream providers, which is why I've used it to compare. 4 te0-0-0-0.nr11.b023003-0.phx02.atlas.cogentco.com (38.88.34.21) 0.973 ms 1.013 ms te0-0-0-1.nr11.b023003-0.phx02.atlas.cogentco.com (38.104.116.73) 1.052 ms 5 154.24.18.197 (154.24.18.197) 2.200 ms 154.24.18.201 (154.24.18.201) 2.229 ms 154.24.18.205 (154.24.18.205) 0.926 ms 6 be2124.ccr21.phx02.atlas.cogentco.com (66.28.4.193) 2.360 ms 2.737 ms 2.809 ms 7 be2331.ccr22.lax01.atlas.cogentco.com (154.54.30.193) 12.796 ms be2330.ccr21.lax01.atlas.cogentco.com (154.54.30.189) 14.156 ms 14.120 ms 8 be2019.ccr21.lax04.atlas.cogentco.com (154.54.88.10) 14.109 ms 13.642 ms be2017.ccr21.lax04.atlas.cogentco.com (154.54.0.237) 13.916 ms 9 be-201-pe01.losangeles.ca.ibone.comcast.net (50.248.118.249) 15.341 ms 15.304 ms 15.290 ms 10 he-0-4-0-1-cr02.losangeles.ca.ibone.comcast.net (68.86.85.29) 13.283 ms he-0-4-0-0-cr02.losangeles.ca.ibone.comcast.net (68.86.85.13) 13.119 ms he-0-4-0-1-cr02.losangeles.ca.ibone.comcast.net (68.86.85.29) 13.238 ms 11 be-11315-cr01.dallas.tx.ibone.comcast.net (68.86.85.141) 38.441 ms 38.433 ms 38.354 ms 12 be-11314-cr02.56marietta.ga.ibone.comcast.net (68.86.85.22) 55.604 ms 56.516 ms 57.727 ms 13 et-2-0-0-0-ar01.b0atlanta.ga.atlanta.comcast.net (68.86.89.66) 55.706 ms 54.596 ms 54.688 ms 14 xe-10-3-0-0-sur01.a2atlanta.ga.atlanta.comcast.net (68.86.106.58) 54.073 ms 54.066 ms xe-11-3-0-0-sur01.a2atlanta.ga.atlanta.comcast.net (68.86.106.90) 54.607 ms 15 xe-9-3-0-sur02.a2atlanta.ga.atlanta.comcast.net (68.86.110.233) 54.793 ms 55.331 ms 55.320 ms The traceroute reaches 68.86.110.233 successfully without issue. That same traceroute, from my network takes a similar route, but ultimately fails: 6 te0-0-1-1.nr11.b023003-0.phx02.atlas.cogentco.com (38.104.116.185) 0.789 ms 0.720 ms te0-0-0-0.nr11.b023003-0.phx02.atlas.cogentco.com (38.88.34.21) 0.688 ms 7 154.24.18.201 (154.24.18.201) 2.295 ms 2.288 ms 154.24.18.205 (154.24.18.205) 1.062 ms 8 be2125.ccr22.phx02.atlas.cogentco.com (154.54.1.101) 1.248 ms 1.618 ms be2124.ccr21.phx02.atlas.cogentco.com (66.28.4.193) 2.601 ms 9 be2331.ccr22.lax01.atlas.cogentco.com (154.54.30.193) 13.444 ms be2330.ccr21.lax01.atlas.cogentco.com (154.54.30.189) 14.857 ms 13.868 ms 10 be2017.ccr21.lax04.atlas.cogentco.com (154.54.0.237) 13.942 ms be2019.ccr21.lax04.atlas.cogentco.com (154.54.88.10) 15.295 ms be2017.ccr21.lax04.atlas.cogentco.com (154.54.0.237) 13.176 ms 11 be-201-pe01.losangeles.ca.ibone.comcast.net (50.248.118.249) 14.048 ms 11.872 ms 11.864 ms 12 he-0-4-0-2-cr02.losangeles.ca.ibone.comcast.net (68.86.85.93) 14.454 ms he-0-4-0-1-cr02.losangeles.ca.ibone.comcast.net (68.86.85.29) 14.267 ms he-0-4-0-2-cr02.losangeles.ca.ibone.comcast.net (68.86.85.93) 12.086 ms 13 be-11315-cr01.dallas.tx.ibone.comcast.net (68.86.85.141) 35.729 ms 35.723 ms 39.375 ms 14 * * * 15 * * * 16 * * * A traceroute back to my network on Comcast in that region fails in a similar fashion: 1 <1 ms 1 ms 1 ms 192.168.10.1 2 29 ms 8 ms 10 ms 96.120.4.213 3 10 ms 7 ms 9 ms xe-5-1-0-sur01.b2marietta.ga.atlanta.comcast.net [68.85.173.93] 4 11 ms 13 ms 12 ms xe-4-1-18-0-ar01.b0atlanta.ga.atlanta.comcast.ne t [68.86.106.190] 5 16 ms 19 ms 17 ms he-0-4-0-6-cr02.56marietta.ga.ibone.comcast.net [68.86.90.81] 6 * * * Request timed out. 7 * * * Request timed out. 8 * * * Request timed out. It seems like xe-5-1-0-sur01.b2marietta.ga.atlanta.comcast.net is not routing this traffic. I appreciate any assistance that can be provided. Thank you for taking the time to read this.