Trusted Calling with SHAKEN/STIR

Publisher

Twilio

URL

https://www.twilio.com/docs/voice/trusted-calling-with-shakenstir

Published

2026-09-30

Updated

unknown

Accessed

2026-09-30

HTTP status

200

License

Copyright Twilio; no-redistribution; short excerpts and locators only

Source notes citing this source

• Twilio includes StirVerstat only when the incoming call carries a SHAKEN PASSporT identity header; calls without one have no verification parameter. in context
• Twilio returns No-TN-Validation when the SHAKEN PASSporT is malformed, carries invalid phone numbers or has a timestamp more than one minute old. in context
• Twilio adds a StirVerstat parameter to inbound-call webhooks with values such as TN-Validation-Passed-A/B/C, TN-Validation-Failed-A/B/C or No-TN-Validation. in context

Cite this source record

APA

WarmTransfer. (2026, September 30). Trusted Calling with SHAKEN/STIR. WarmTransfer. https://warmtransfer.net/knowledge/sources/twilio-docs-trusted-calling-shakenstir

BibTeX

@misc{warmtransfer-twilio-docs-trusted-calling-shakenstir,
  title  = {Trusted Calling with SHAKEN/STIR},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/twilio-docs-trusted-calling-shakenstir},
  note   = {Twilio, accessed 2026-09-30}
}