[VoiceOps] SIP Credential Strength / Domestic Fraud

[Alex Balashov]

A crude analysis of wholesale termination decks for +1 641-741[1] reveals prices
in the range of $0.019/min to $0.22/min, so yeah, termination arbitrage.

[1] https://www.localcallingguide.com/lprefix.php?exch=039920

On Fri, Dec 13, 2019 at 12:49:01PM -0500, John Levine wrote:

> In article <CAEu0Vi0Z9ki+TYq-7AkSYGf+-4pNE-m_-jfjk+jy0vRAV4oeSA at mail.gmail.com> you write:
> >Arbitrage scam, that's still one of those local monopolies most likely.
> 
> Killduff Telephone has one switch with two prefixes so, yeah, termination arbitrage.
> 
> R's,
> John
> 
> 
> >
> >
> >On Fri, Dec 13, 2019 at 9:51 AM Dave Sill <dave at socket.net> wrote:
> >
> >> All,
> >>
> >> We recently saw fraudulent calls via compromised SIP credentials to
> >> Killduff, IA.  Any thoughts on why?
> >>
> _______________________________________________
> VoiceOps mailing list
> VoiceOps at voiceops.org
> https://puck.nether.net/mailman/listinfo/voiceops

-- 
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) 
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/