| RFC 8224 | Feb 2018 | Authenticated Identity Management in the Session Initiation Protocol (SIP) | 19 RFCs |
| RFC 8225 | Feb 2018 | PASSporT: Personal Assertion Token | 15 RFCs |
| RFC 8588 | May 2019 | Personal Assertion Token (PaSSporT) Extension for Signature-based Handling of Asserted information using toKENs (SHAKEN) | |
| RFC 9027 | Jun 2021 | Assertion Values for Resource Priority Header and SIP Priority Header Claims in Support of Emergency Services Networks | |
| RFC 9410 | Jul 2023 | Handling of Identity Header Errors for Secure Telephone Identity Revisited (STIR) | |
| RFC 9447 | Sep 2023 | Automated Certificate Management Environment (ACME) Challenges Using an Authority Token | 2 RFCs |
| RFC 9448 | Sep 2023 | TNAuthList Profile of Automated Certificate Management Environment (ACME) Authority Token | 2 RFCs |
| RFC 9475 | Dec 2023 | Messaging Use Cases and Extensions for Secure Telephone Identity Revisited (STIR) | |
| RFC 9795 | Jul 2025 | Personal Assertion Token (PASSporT) Extension for Rich Call Data | 1 RFC |
| RFC 9796 | Jul 2025 | SIP Call-Info Parameters for Rich Call Data | |