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ObsoletedLegacy stream

RFC 958: Network Time Protocol (NTP)

This RFC has been replaced. Do not implement against it for new work — it was formally obsoleted by RFC 1059, RFC 1119, RFC 1305.

Current document in this lineage: RFC 5905 — Network Time Protocol Version 4: Protocol and Algorithms Specification

In plain English — editorial summary, not part of the RFC

This document describes the Network Time Protocol (NTP), a protocol for synchronizing a set of network clocks using a set of distributed clients and servers. NTP is built on the User Datagram Protocol (UDP), which provides a connectionless transport mechanism. It is evolved from the Time Protocol and the ICMP Timestamp message and is a suitable replacement for both. This RFC suggests a proposed protocol for the ARPA-Internet community, and requests discussion and suggestions for improvements.

Document record

Document ID
RFC958
Published
September 1985
Authors
D.L. Mills
Status
UNKNOWN
Stream
Legacy
Area
—
Pages
14
Also known as
—
Obsoleted by:
RFC 1059, RFC 1119, RFC 1305

Topics

Standards lineage

This document is one revision in a chain of 9 RFCs, each formally replacing the one before it.

  1. RFC 958 (1985)
  2. RFC 1059 (1988)
  3. RFC 1119 (1989)
  4. RFC 1305 (1992)
  5. RFC 1361 (1992)
  6. RFC 1769 (1995)
  7. RFC 2030 (1996)
  8. RFC 4330 (2006)
  9. RFC 5905 (2010) ✓

Read the full history of Network Time Protocol Version 4: Protocol and Algorithms Specification →

Referenced by

3 later RFCs formally update or obsolete part of this document.

Related documents

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About this page

The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/958-network-time-protocol-ntp