| 1 |
tools.ietf.org/html/rfc801
rfc801NCP/TCP transition plan (RFC ) |
| 2 |
tools.ietf.org/html/rfc882
rfc882Domain names: Concepts and facilities (RFC ) |
| 3 |
tools.ietf.org/html/rfc883
rfc883Domain names: Implementation specification (RFC ) |