144.224.0.0/16

Currently announced by AS174 Cogent Communications, Inc., in the routed prefix 144.224.0.0/16.

Current ASN: AS174; Cogent Communications, Inc.
Routed prefix: 144.224.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 144.224.0.0/16

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 144.224.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
144.224.0.0/16	AS174	Cogent Communications, Inc.	United States	Before monitoring	2026-11-08 10:26	Announcing

More specific routes16 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
144.224.32.0/19	AS4637	Telstra (International)	Hong Kong SAR China	Before monitoring	2026-11-08 10:26	Announcing
144.224.64.0/19	AS4637	Telstra (International)	Hong Kong SAR China	Before monitoring	2026-11-08 10:26	Announcing
144.224.128.0/17	AS22773	Cox Communications	United States	Before monitoring	2026-11-03 00:25	Stopped
144.224.128.0/19	AS20001	Charter Communications (20001)	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.128.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.128.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.144.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.160.0/19	AS20001	Charter Communications (20001)	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.160.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.176.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.192.0/19	AS20001	Charter Communications (20001)	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.192.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.208.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.224.0/19	AS20001	Charter Communications (20001)	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.224.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped
144.224.240.0/20	AS11404	Wave Division Holdings	United States	Before monitoring	2026-11-03 04:47	Stopped

Change logAll changes

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

Look up another address

RIR allocation record

Registry: ARIN
Allocated block: 144.224.0.0/16
Country: United States
Allocation date: 1991-01-11
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.