143.69.0.0/16

Currently announced by AS721 United States Department of Defense (DoD), in the routed prefix 143.69.0.0/16.

Current ASN: AS721; United States Department of Defense (DoD)
Routed prefix: 143.69.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 143.69.0.0/16

Routing data · Nov 2, 2026, 06:27 UTC

ASN historyEvery routed prefix covering 143.69.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
143.69.0.0/16	AS721	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing

More specific routes17 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
143.69.7.0/24	AS1590	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.8.0/22	AS367	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.12.0/23	AS367	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.38.0/23	AS27064	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.64.0/20	AS1540	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.83.0/24	AS1540	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.96.0/23	AS1540	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.138.0/24	AS1493	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.139.0/24	AS1493	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.140.0/24	AS1493	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.141.0/24	AS1493	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.144.0/24	AS1493	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.147.0/24	AS1493	Headquarters, USAISC	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.160.0/19	AS5972	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.216.0/21	AS1590	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.232.0/22	AS1590	United States Department of Defense (DoD)	United States	Before monitoring	2026-11-02 06:27	Announcing
143.69.142.0/24	AS1493	Headquarters, USAISC	United States	Before monitoring	2026-10-31 00:20	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: 143.69.0.0/16
Country: United States
Allocation date: 1990-03-26
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.