hex0101 Wow thats terrible. Smaller the network the more optiomal. Here’s my docsis to another docsis, smaller ISP
Tracing route to 146.12.103.x.res-cmts.brd4.ptd.net [146.12.103.x]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms unifi.home.arpa [192.168.5.1]
2 7 ms 10 ms 7 ms 10.71.0.1
3 8 ms 10 ms 9 ms 10.193.20.5
4 9 ms 10 ms 8 ms 146.12.103.x.res-cmts.brd4.ptd.net [146.12.103.x]
Pinging 146.12.103.x with 32 bytes of data:
Reply from 146.12.103.x: bytes=32 time=2ms TTL=252
Reply from 146.12.103.x: bytes=32 time=8ms TTL=252
Reply from 146.12.103.x: bytes=32 time=7ms TTL=252
Reply from 146.12.103.x: bytes=32 time=8ms TTL=252
If I ping cmts to pon its simular, passes through my cmts (10.71.0.1) then another router (10.193.20.5) then one more router, then the res-olt.brd.ptd.net endpoint. I have all of my ISP’s reverse DNS in a giant notepad. Grabbed the IP blocks from the ASN at Hurricane Electrics page. Used prips comand to get those cidr notations to a large text file 1 IP per line. Fed that into massdns - (its on github), and exported all to a file. So I can do searches for city names, company names, pon designation, cmts designation, etc… All stuff that gives me a good idea of the CMTS to PON ratio. A lot of stuff you can get from smaller ISP’s vs Comcast.
I did a few CIDR’s for Comcast and got a good idea of city names in those reverse DNS entries, which was pretty neat. I’m sure given enough time someone could write an app to plot them all on a map, maybe even do full ISP reverse DNS dump from an ASN in one automated step.
A lot of times customer routers have ping disabled. Like I was at my vet and got their IP off of public wifi. Looked it up and yeah it was on the res-pon.brd.ptd.net. I can trace from home but they have ping blocked. Its only 4 hops (including my router).
