| Created |
| Associated with NTP |
| Associated with RFC 958 |
| Associated with RFC 1059 |
| Associated with RFC 1129 |
| Associated with RFC 1128 |
| Associated with RFC 1165 |
| Associated with RFC 1305 |
| Associated with RFC 1119 |
| Associated with RFC 1589 |
| Associated with RFC 1361 |
| Associated with SNTP |
| Associated with RFC 1769 |
| Associated with RFC 2030 |
| Associated with rfc4075 |
| Associated with RFC 4075 |
| Associated with RFC 4330 |