Per level3 this is called toll free pumping Their Fraud deptt will give you an FBI noticed about this & say they cannot track the source
Ujjval K > On Feb 24, 2014, at 7:54 AM, Ivan Kovacevic <[email protected]> > wrote: > > Calls are coming to us via L3 (along with all the legitimate traffic) so > simple IP block won't be helpful. We've disconnected the number to make it > stop... but this is only possible because the number was not in use. > > If it was an active number, we wouldn't have this option. Just chatting > with L3 to see what options they have for this type of scenario. > > Best Regards, > > Ivan > > -----Original Message----- > From: John Curry [mailto:[email protected]] > Sent: Monday, February 24, 2014 9:51 AM > To: 'Christopher Aloi'; 'Ivan Kovacevic' > Cc: [email protected] > Subject: RE: [VoiceOps] Voice DDOS ? > > I would just block the originating IP address. It would appear to me > someone is trying to compromise your system. > > -----Original Message----- > From: VoiceOps [mailto:[email protected]] On Behalf Of > Christopher Aloi > Sent: Monday, February 24, 2014 9:44 AM > To: Ivan Kovacevic > Cc: [email protected] > Subject: Re: [VoiceOps] Voice DDOS ? > > > Sounds like a possible loop, the "No Routes Found" recording comes off of > a Sonus Networks GSX or SBC. > > How is the TFN arriving to your network? > > - Chris > > > >> On 24 Feb 2014, at 9:01, Ivan Kovacevic wrote: >> >> Hi Folks, >> >> >> >> We are seeing something strange coming across our network. A >> disconnected client TFN is receiving 30,000+ calls per hour (all >> failing). The ANIs being used are dummy ANIs 17029983416 (no answer) >> and 16469820093 (recording saying "no routes found"). >> >> >> >> This is not affecting our network, although it's causing the upstream >> provider a bit of grief. >> >> >> >> Not sure why someone would do this.... We are about to remove the CICs >> at the >> sms800 level, but just wondering if anyone has come across something >> similar? >> >> >> >> Thanks, >> >> >> >> Ivan >> _______________________________________________ >> VoiceOps mailing list >> [email protected] >> https://puck.nether.net/mailman/listinfo/voiceops > _______________________________________________ > VoiceOps mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/voiceops > _______________________________________________ > VoiceOps mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/voiceops _______________________________________________ VoiceOps mailing list [email protected] https://puck.nether.net/mailman/listinfo/voiceops
