The US Domain
RFC 1480
Document | Type |
RFC - Informational
(June 1993; No errata)
Obsoletes RFC 1386
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Last updated | 2013-03-02 | ||
Stream | Legacy | ||
Formats | plain text pdf html bibtex | ||
Stream | Legacy state | (None) | |
Consensus Boilerplate | Unknown | ||
RFC Editor Note | (None) | ||
IESG | IESG state | RFC 1480 (Informational) | |
Telechat date | |||
Responsible AD | (None) | ||
Send notices to | (None) |
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 [Page 1] RFC 1480 The US Domain June 1993 6. Security Considerations ..................................... 35 7. Authors' Addresses .......................................... 36 Appendix-I: US Domain Names BNF................................. 37 Appendix-II: US Domain Questionnaire ............................ 42 1. INTRODUCTION 1.1 The Internet Domain Name System The Domain Name System (DNS) provides for the translation between hostnames and addresses. Within the Internet, this means translating from a name such as "venera.isi.edu", to an IP address such as "128.9.0.32". The DNS is a set of protocols and databases. The protocols define the syntax and semantics for a query language to ask questions about information located by DNS-style names. The databases are distributed and replicated. There is no dependence on a single central server, and each part of the database is provided in at least two servers. The assignment of the 32-bit IP addresses is a separate activity. IP addresses are delegated by the central Internet Registry to regional authorities (such as the RIPE NCC for Europe) and the network providers. To have a network number assigned please contact your network service provider or regional registration authority. To determine who this is (or as a last resort), you can contact the central Internet Registry at Hostmaster@INTERNIC.NET. In addition to translating names to addresses for hosts that are on the Internet, the DNS provides for registering DNS-style names for other hosts reachable (via electronic mail) through gateways or mail relays. The records for such name registrations point to an Internet host (one with an IP address) that acts as a mail forwarder for the registered host. For example, the host "bah.rochester.ny.us" is registered in the DNS with a pointer to the mail relay "relay1.uu.net". This type of pointer is called an MX record. This gives electronic mail users a uniform mail addressing syntax andShow full document text