Contributor
•
46 Messages
Reporting incorrect reverse DNS
Hi folks. This is about as low-priority as they come, but I am reporting that the reverse DNS records for IPv4 and IPv6 addresses at my location are wrong, and have been for the 2 years that I have lived at this house. My IP address, as well as those of the first several of the various routers in the Comcast network (CRAN?), all contain the name "murfreesboro". That is a town that is a good hour away by car, maybe 60-65 miles. It's in the next county over. I have posted v4 and v6 traceroutes below that show the names. Just a heads up if this can ever make it to anyone in the infrastructure/DNS teams. Thanks!
traceroute to gmail.com (64.233.185.19), 30 hops max, 46 byte packets
1 10.61.218.2 (10.61.218.2) 12.132 ms
2 po-307-322-rur202.murfreesboro.tn.nash.comcast.net (68.86.195.137) 10.194 ms
3 po-200-xar01.murfreesboro.tn.nash.comcast.net (162.151.95.17) 10.052 ms
.
.
.
traceroute to gmail.com (2607:f8b0:4002:c03::13), 30 hops max, 72 byte packets
1 2001:558:1032:2c::3 (2001:558:1032:2c::3) 11.705 ms
2 po-307-321-rur201.murfreesboro.tn.nash.comcast.net (2001:558:162:fff9::1) 11.201 ms
3 po-200-xar02.murfreesboro.tn.nash.comcast.net (2001:558:160:1a3::1) 10.809 ms
4 po-200-xar02.murfreesboro.tn.nash.comcast.net (2001:558:160:1a3::1) 6.816 ms
.
.
.
EG
Expert
•
110.1K Messages
11 days ago
Hello again T_W ! Hope you are well !! FWIW. Hop #2 (the CMTS) at the headend facility / bldg. may actually be located in Murfreesboro. So may hop #3 (the first Comcast regional CRAN router). Just sayin'. Is the rDNS correct for your actual public / WAN IP address ?
1
0
EG
Expert
•
110.1K Messages
10 days ago
@train_wreck
These days, there are many facilities called "Super Headends". They are fewer and farther between compared to the old days of many local headends. They are fiber backhaul, so distance is not a factor.
Scroll down to Super Headend;
https://en.wikipedia.org/wiki/Cable_television_headend
(edited)
0
XfinityKei
Official Employee
•
1.4K Messages
9 days ago
@train_wreck Thanks for bringing this question to our community EG is correct. Are you experiencing any connection issues?
2
0
EG
Expert
•
110.1K Messages
9 days ago
Huh ???
0
0