SITR/SHAKEN implementation in effect today (June 30 2021)

K. Scott Helms kscott.helms at
Fri Jul 9 20:36:12 UTC 2021

Nothing will change immediately.  Having said that, I do expect that we
will see much more effective enforcement.  The investigations will come
from the ITG (Industry Traceback Group) with enforcement coming from FCC or
FTC depending on the actual offense.  The problem has been that it's been
far too easy for robocalling companies to hop from one telecom provider to
another.  Now there are requirements around "know your customer" that
telecom operators have to follow and the ITG will have a much better chance
of figuring out who the bad actor is than they have in the past.

Longer term I worry that this will lead to more attacks on PBXs, eSBCs, and
VOIP handsets to be able to call either from that endpoint itself or be
able to use the SIP credentials.  The market for robocalls will certainly
not disappear.

Scott Helms

On Fri, Jul 9, 2021 at 1:07 PM Michael Thomas <mike at> wrote:

> Nothing has changed for me either. Color me surprised. The real proof will
> be to see if the originating domain can be determined, and whether the
> receiving domain does anything about it.
> Mike
> On 7/9/21 9:42 AM, Brandon Svec via NANOG wrote:
> I’m getting the same or more, but did anyone really expect they would stop
> July 1? It will take time for complaints to be tracked down and operators
> to take actions, right?
> Brandon
> On Fri, Jul 9, 2021 at 6:49 AM Josh Luthman <josh at>
> wrote:
>> Subjectively speaking, I'm still getting the same amount of spam phone
>> calls.
>> I'm certainly getting a lot more spam SMS to my cell.  Almost all of them
>> in my entire life starting July 1...
>> Josh Luthman
>> 24/7 Help Desk: 937-552-2340
>> Direct: 937-552-2343
>> 1100 Wayne St
>> <,+OH+45373?entry=gmail&source=g>
>> Suite 1337
>> <,+OH+45373?entry=gmail&source=g>
>> Troy, OH 45373
>> <,+OH+45373?entry=gmail&source=g>
>> On Fri, Jul 9, 2021 at 9:40 AM Jeff Shultz <jeffshultz at>
>> wrote:
>>> All I know is that I am getting a lot fewer bogus calls on my cell phone
>>> than I was this time last month.
>>> On Fri, Jul 9, 2021, 06:17 Ryan Finnesey via NANOG <nanog at>
>>> wrote:
>>>> This should help with Robo calls a lot.
>>>> -----Original Message-----
>>>> From: NANOG < at> On
>>>> Behalf Of Sean Donelan
>>>> Sent: Wednesday, June 30, 2021 2:31 PM
>>>> To: nanog at
>>>> Subject: SITR/SHAKEN implementation in effect today (June 30 2021)
>>>> STIR/SHAKEN Broadly Implemented Starting Today
>>>> WASHINGTON, June 30, 2021—FCC Acting Chairwoman Jessica Rosenworcel
>>>> today announced that the largest voice service providers are now using
>>>> STIR/SHAKEN caller ID authentication standards in their IP networks, in
>>>> accordance with the deadline set by the FCC. This widespread implementation
>>>> helps protect consumers against malicious spoofed robocalls and helps law
>>>> enforcement track bad actors. The STIR/SHAKEN standards serve as a common
>>>> digital language used by phone networks, allowing valid information to pass
>>>> from provider to provider which, among other things, informs blocking tools
>>>> of possible suspicious calls.
>>> --
> Brandon Svec
> 15106862204 ☎️ or 💬
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