| Extended Key Usage (EKU) for Session Initiation Protocol (SIP) X.509 Certificates | 0 | 0.34 | 2010 |
| Domain Certificates in the Session Initiation Protocol (SIP) | 0 | 0.34 | 2010 |
| Addressing an Amplification Vulnerability in Session Initiation Protocol (SIP) Forking Proxies. | 0 | 0.34 | 2008 |
| An HTTP Extension Framework | 12 | 2.48 | 2000 |
| Upgrading to TLS Within HTTP/1.1 | 8 | 0.93 | 2000 |
| HTTP Authentication: Basic and Digest Access Authentication | 253 | 30.72 | 1999 |
