Network Working Group A. Cooper
Request for Comments: 1480 J. Postel
Obsoletes: 1386 June 1993
The US Domain
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard. Distribution of this memo is
unlimited.
Table of Contents
1. Introduction ................................................ 2
1.1 The Internet Domain Name System......................... 2
1.2 Top-Level Domains....................................... 3
1.3 The US Domain .......................................... 4
2. Naming Structure ............................................ 4
2.1 State Codes ............................................ 8
2.2 Locality Names.......................................... 8
2.3 Schools ................................................ 10
2.4 State Agencies.......................................... 15
2.5 Federal Agencies ....................................... 15
2.6 Distributed National Institutes......................... 15
2.7 General Independent Entities............................ 16
2.8 Examples of Names....................................... 17
3. Registration ................................................ 20
3.1 Requirements ........................................... 20
3.2 Direct Entries ......................................... 21
3.2.1 IP-Hosts............................................. 21
3.2.2 Non-IP Hosts ........................................ 21
3.3 Delegated Subdomains ................................... 24
3.3.1 Delegation Requirement............................... 26
3.3.2 Delegation Procedures ............................... 28
3.3.3 Subdomain Contacts................................... 29
4. Database Information......................................... 30
4.1 Name Servers ........................................... 30
4.2 Zone files ............................................. 30
4.3 Resource Records ....................................... 31
4.3.1 "A" Records ......................................... 32
4.3.2 CNAME Records ....................................... 32
4.3.3 MX Records .......................................... 33
4.3.4 HINFO Records ....................................... 33
4.3.5 PTR Records ......................................... 33
4.4 Wildcards .............................................. 34
5. References .................................................. 35
Cooper & Postel