[Outages-discussion] Re: [Outages] Issue with AT&T customers reaching at least one of our IPs

[Moved to -discussion, not an outage.] On 11/12/25 11:20, Anthony Hoppe via Outages wrote:

Hello List,

I need help getting in touch with someone helpful at AT&T (NetEng and/or trust & safety/abuse/compliance/security or preferably all the above). Starting on November 6th, customers behind AT&T have been unable to reach our IP address 149.137.136.16 which is the API VIP we use to serve downloads from Backblaze B2 buckets.

If you go one up (.17) or one down (.15) no issues.

This smells like a stuck RTBH community or similar within AT&T. -- Jay Hennigan - jay@west.net Network Engineering - CCIE #7880 503 897-8550 - WB6RDV