Re: Google Fi IPs

[Christopher Morrow <morrowc.lists () gmail com>]

On Thu, Jun 2, 2022 at 12:22 PM John Von Essen <john () essenz com> wrote:

> Feel free to contact me off-list if your associated with Google Fi.
>
> I’m trying to narrow down some IP abuse that I believe is coming from
> Google Fi mobile devices. The IPs are all coming up as generic Google LLC
> in whois, and they dont have any reverse DNS. I’m trying to see how I can
> confirm that these are IPs related to the Google Fi service/network, or
> just random Google Clould IPs
>
> Here are some sample IPs:
>
> 35.187.133.202
> 35.187.133.204
> 35.187.133.200
> 34.116.22.76
> 34.116.22.74
> 34.116.22.72
> 107.178.194.231
> 107.178.194.233
> 107.178.194.235
> 107.178.193.10
> 107.178.193.12
all of these are very clearly marked out in whois as google-cloud ips:
NetRange:       35.184.0.0 - 35.191.255.255
CIDR:           35.184.0.0/13
NetName:        GOOGLE-CLOUD

NetRange:       34.64.0.0 - 34.127.255.255
CIDR:           34.64.0.0/10
NetName:        GOOGL-2

NetRange:       107.178.192.0 - 107.178.255.255
CIDR:           107.178.192.0/18
NetName:        GOOGLE-CLOUD

$ for d in $(cat /tmp/x); do host $d; done
Host 202.133.187.35.in-addr.arpa not found: 2(SERVFAIL)
Host 204.133.187.35.in-addr.arpa not found: 2(SERVFAIL)
Host 200.133.187.35.in-addr.arpa not found: 2(SERVFAIL)
Host 76.22.116.34.in-addr.arpa not found: 2(SERVFAIL)
Host 74.22.116.34.in-addr.arpa not found: 2(SERVFAIL)
Host 72.22.116.34.in-addr.arpa not found: 2(SERVFAIL)
231.194.178.107.in-addr.arpa domain name pointer
231.194.178.107.gae.googleusercontent.com.
233.194.178.107.in-addr.arpa domain name pointer
233.194.178.107.gae.googleusercontent.com.
235.194.178.107.in-addr.arpa domain name pointer
235.194.178.107.gae.googleusercontent.com.
10.193.178.107.in-addr.arpa domain name pointer
10.193.178.107.gae.googleusercontent.com.
12.193.178.107.in-addr.arpa domain name pointer
12.193.178.107.gae.googleusercontent.com.

I'll see about fixing the missing ptrs... but... 'it's all cloud man!'


> Thanks
> John