[VoiceOps] Identity Header Test Tool

Mary Lou Carey marylou at backuptelecom.com
Tue Jul 5 19:26:41 EDT 2022

Inteliquent was just got bought out by Sinch so they are one and the 
same. Inteliquent also bought out several companies like Onvoy several 
years back so it has multiple company names riding its network. It's my 
understanding that Sinch (fka Inteliquent) also sells DID services 
through several different affiliate companies. So you can't always go by 
the name associated with the OCN. A better way to tell which NXXs are 
part of each carrier's network is to pay attention to the AOCN number 
associated with each of the NXXs in the LERG.

BackUP Telecom Consulting
Office: 615-791-9969
Cell: 615-796-1111

On 2022-07-05 05:52 PM, Nathan Anderson wrote:
> This totally rocks; thank you for putting this together.
> In case anyone is interested, here is what I happen to see when
> calling any of these numbers through VoIP Innovations' T.38 deck; I
> will try other LCR rate decks of theirs, as well as other term
> providers, in the near future:
> Like others here have observed happening to them, calling the
> Bandwidth.com number results in the call being shown as attested, but
> our original signed attestation has gone missing and been replaced
> with a "B"-level attestation by Bandwidth themselves.  So perhaps VI
> does not send any term traffic to Bandwidth, or they just aren't
> included in the T.38 LCR (very likely, since VI's portal indicates
> that Bandwidth does not support T.38 on origination, so it's equally
> likely they don't for term, either, especially since it's much tricker
> to support for term if you aren't doing the T.38 gatewaying for all
> TDM- or POTS-destined traffic yourself), and either some intermediate
> provider is stripping our Identity header out or it's going
> IP-to-TDM-to-IP with no STI-CPS/OOB-SHAKEN.
> The Sinch number seems to be hosted by Inteliquent, and our own signed
> "A"-level attestation arrives at the destination unmolested.  Makes
> sense since VI does a ton of business with IQ.
> None of our calls to any of the toll-free numbers are attested at all.
>  Somewhat surprising in the case of Lumen/L3, even more surprising
> with Sinch/IQ.
> -- Nathan
> -----Original Message-----
> From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of 
> David Frankel
> Sent: Sunday, July 3, 2022 8:05 AM
> To: voiceops at voiceops.org
> Subject: [VoiceOps] Identity Header Test Tool
> Last week I was forwarded a note from this list regarding tools to
> test and debug SHAKEN Identity headers. That prompted us to stitch
> together some modules we already had in an attempt to help.
> What we have is at http://identity.legalcallsonly.org. You can call
> one of the test numbers listed on that page, and if we receive your
> header, we'll read you a six-digit code. Disconnect and then plug the
> code into the box on the web form, and we'll show you details of that
> Identity header.
> Perhaps most importantly, you'll be able to see if the header we
> received is the one you sent. In addition, we parse the header and try
> to tell you if it is correctly formatted and valid.
> Currently we have a couple of geographic DIDs and three toll-free
> numbers (each using different underlying providers). So far we aren't
> having a lot of success getting the Identity headers on the TFNs;
> we're working to improve that.
> Suggestions welcome. We hope the tool provokes more discussion about
> best practices regarding making the Authentication Framework as
> functional and useful as possible.
> Happy 4th of July!
> David Frankel
> St. George, UT USA
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