169.203.0.0/16

Currently announced by AS22920 U.S. Bureau of Indian Affairs, in the routed prefix 169.203.0.0/16.

Current ASN: AS22920; U.S. Bureau of Indian Affairs
Routed prefix: 169.203.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 169.203.0.0/16

Routing data · Nov 2, 2026, 04:24 UTC

ASN historyEvery routed prefix covering 169.203.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
169.203.0.0/16	AS22920	U.S. Bureau of Indian Affairs	United States	Before monitoring	2026-11-02 04:24	Announcing

More specific routes14 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
169.203.16.0/21	AS22920	U.S. Bureau of Indian Affairs	United States	Before monitoring	2026-11-02 04:24	Announcing
169.203.32.0/21	AS22920	U.S. Bureau of Indian Affairs	United States	Before monitoring	2026-11-02 04:24	Announcing
169.203.128.0/18	AS22920	U.S. Bureau of Indian Affairs	United States	Before monitoring	2026-11-02 04:24	Announcing
169.203.0.0/20	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.16.0/23	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.18.0/24	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.20.0/23	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.22.0/23	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.40.0/21	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.48.0/21	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.64.0/18	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.224.0/24	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.246.0/24	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped
169.203.248.0/24	AS22920	U.S. Bureau of Indian Affairs	United States	2026-10-27 10:19	2026-10-27 12:20	Stopped

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

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RIR allocation record

Registry: ARIN
Allocated block: 169.203.0.0/16
Country: United States
Allocation date: 1995-03-30
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.