# RFC 7822: Network Time Protocol Version 4 (NTPv4) Extension Fields

**URL:** <https://community.nwtime.org/t/rfc-7822-network-time-protocol-version-4-ntpv4-extension-fields/301>\
**Category:** Documentation\
**Created:** [February 12, 2026, 3:15pm UTC](https://community.nwtime.org/t/rfc-7822-network-time-protocol-version-4-ntpv4-extension-fields/301 "2026-02-12T15:15:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Dru](https://sea1.discourse-cdn.com/flex001/user_avatar/community.nwtime.org/dru/32/337_2.png) [@Dru](https://community.nwtime.org/u/Dru)\
**Post date:** [February 12, 2026, 3:15pm UTC](https://community.nwtime.org/t/rfc-7822-network-time-protocol-version-4-ntpv4-extension-fields/301/1 "2026-02-12T15:15:03Z")

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> **[RFC 7822: Network Time Protocol Version 4 (NTPv4) Extension Fields](https://www.rfc-editor.org/rfc/rfc7822)**