[outages] AT&T SFO to Twitter -- possible routing issue or BGP hijack

[Job Snijders]

On Sat, Jun 24, 2023 at 06:17:12AM +0000, Jeremy Chadwick via Outages wrote:
> $ telnet route-server.ip.att.net 80
> Trying 12.0.1.28...
> telnet: connect to address 12.0.1.28: Connection refused
> telnet: Unable to connect to remote host

It's a telnet service:

$ telnet route-server.ip.att.net
Trying 12.0.1.28...
Connected to route-server.ip.att.net.
Escape character is '^]'.
-------------- route-server.ip.att.net ---------------
---------  AT&T IP Services Route Monitor  -----------

The information available through route-server.ip.att.net is offered
by AT&T's Internet engineering organization to the Internet community.

This router maintains eBGP peerings with customer-facing routers
throughout the AT&T IP Services Backbone:

[snip]