205.201.144.0/20

Currently announced by AS21889 Rapid Systems Corporation, in the routed prefix 205.201.144.0/20.

Current ASN: AS21889; Rapid Systems Corporation
Routed prefix: 205.201.144.0/20; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 205.201.144.0/20

Routing data · Nov 2, 2026, 02:24 UTC

ASN historyEvery routed prefix covering 205.201.144.0/20

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
205.201.144.0/20	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing

More specific routes15 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
205.201.144.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.145.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.146.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.147.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.148.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.149.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.150.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.151.0/24	AS21889	Rapid Systems Corporation	United States	2026-10-24 10:20	2026-11-02 02:24	Announcing
205.201.152.0/24	AS21889	Rapid Systems Corporation	United States	2026-10-26 06:21	2026-11-02 02:24	Announcing
205.201.153.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.154.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.155.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.156.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.158.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing
205.201.159.0/24	AS21889	Rapid Systems Corporation	United States	Before monitoring	2026-11-02 02:24	Announcing

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: 205.201.144.0/20
Country: United States
Allocation date: 2005-06-02
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.