[ Has been coming up a lot lately. A public response may be useful, YMMV ] After abuse@, which many still do answer, I try the SOA (which is really old fashioned I guess) if I don't get an answer from abuse@ ;; ANSWER SECTION: softlayer.com. 900 IN SOA ns1.softlayer.net. root.softlayer.com. 2016101401 7200 600 1728000 43200 More and more blocking cases these days are also related to IP reputation and malware infections. I'm not aware of any self service capabilities for at least confirmation. Once you're spotted, many application layer firewalls refuse to service your requests e.g. webserver claiming "not allowed". Softlayer was also acquired by IBM. Could try their SOA: ;; ANSWER SECTION: ibm.com. 86400 IN SOA asia3.akam.net. hostmaster.akamai.com. 1480273175 43200 7200 604800 3600 [ I'd go with whoever owns the IP address space you are trying to reach regardless of a packet filter or application filter ] WHOIS queries on the domain occasionally point to someone with clue. Registry Registrant ID: Registrant Name: Domain Administrator Registrant Organization: Softlayer Technologies, Inc. Registrant Street: 4849 Alpha Road Registrant City: Dallas Registrant State/Province: TX Registrant Postal Code: 75244 Registrant Country: US Registrant Phone: XXXX (look it up, it's there ) Registrant Phone Ext: Registrant Fax: Registrant Fax Ext: Registrant Email: XXXXXX In the last few years, and when near the end of the road, the twittersphere has proven an awesome mechanism to reach out and touch someone. I've had 100% success there. If you have a peering relationship, IMHO opinion it is fair game to try them if all else fails. Most peering teams are super happy to help get you to the right people and especially if you've tried. Helping someone solve a problem via peering relationships has always brought a smile to my face and made that five o'clock beer taste even better. Good luck! Cheers, -M< On Mon, Nov 28, 2016 at 8:13 AM, Brian Ellwood via NANOG <nanog@nanog.org> wrote:

Could someone with Softlayer abuse contact me off list?

I have a netblock that cannot communicate with your network - emailed abuse@ about 2 weeks ago and didn't hear back.

Thank you.