You may try the contacts in Whois. I had a similar issue a month or two ago and got a swift response that way… ended up being related to some stale blacklisting. On Dec 20, 2024, at 08:25, Richard Desjardine via NANOG <nanog@nanog.org> wrote: Good day, We have 45.59.96.0/22 that can not reach destinations on the IBM Cloud - AS35361. I have shifted our routing around to validate that regardless of which of our upsteam transit providers we send the traffic on it always fails when it reaches their edge which is through Torix for us due to being located in Ontario. Our other IP blocks are working fine. I have emailed to the contacts on the WHOIS record with no response. There is a published lg.softlayer.com that would be helpful but the site is down. If there is someone who has a known good contact from the IBM Cloud or if someone from AS35361 is able to contact me off list that would be appreciated. Kind regards, Richard [cid:3ce621da-c2ca-4f16-a024-ca64fc149ace]