Overview
As of October 2025 these are the supported TLS cipher suites supported by Twilio for HTTPS requests from Platform Webhooks, including TwiML and status callback requests.
What You Need To Know
Supported Protocols
TLSv1.2
TLSv1.3Supported Ciphers
TLS_RSA_WITH_AES_256_CBC_SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 TLS_RSA_WITH_AES_128_CBC_SHA TLS_RSA_WITH_AES_256_GCM_SHA384 TLS_DHE_RSA_WITH_AES_128_CBC_SHA TLS_RSA_WITH_AES_256_CBC_SHA256 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA TLS_RSA_WITH_AES_128_CBC_SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA TLS_RSA_WITH_AES_128_GCM_SHA256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Conclusion
More information can be found in the following documents:
- Monitoring Updates to the Twilio REST API Security Settings
- Tips for Upgrading Your Environment to Support Twilio REST API’s TLSv1.2 and Strong Cipher Suite Changes
- Frequently Asked Questions: Twilio REST API’s TLS and Cipher Suite Security Changes for June 2019
If you need assistance beyond these resources, please contact our Support Team.