I'm not sure what your requirements are but, we recently blocked all non-ARIN IP space from reaching our registrars. We had something similar happen and this has?essentially?eliminated the fraudulent calls we saw. Thanks, ?Spencer ________________________________ Message: 1 Date: Tue, 17 May 2011 15:53:15 -0700 From: Darren Schreiber <d at d-man.org> To: "VoiceOps at voiceops.org" <VoiceOps at voiceops.org> Subject: [VoiceOps] Fraud fun Message-ID: <C9F84A6B.2097A%d at d-man.org> Content-Type: text/plain; charset="us-ascii" Hi folks, We have been hit twice in the past two days with calls to 011-252-XXXXXXXX (calls to Somalia I believe, and the originating IP is from Pakistan) It's the same user each time, I think he had a weak password, but it cost us over $100, which isn't too bad (we catch it quick) but I'd like to get it closer to $0. :-) Any good recommendations for IP ranges to block from incoming connections? Thanks, Darren Schreiber CEO / Co-Founder 2600hz? |? www.2600hz.com<http://www.2600hz.com/> sip:darren at 2600hz.com tel:415-886-7901