216.20.144.0/20

Currently announced by AS16433 North Central Communications, in the routed prefix 216.20.144.0/20.

Current ASN: AS16433; North Central Communications
Routed prefix: 216.20.144.0/20; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 216.20.144.0/20

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 216.20.144.0/20

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
216.20.144.0/20	AS16433	North Central Communications	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
216.20.144.0/21	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.144.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.145.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.146.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.147.0/24	AS16433	North Central Communications	United States	2026-11-04 22:23	2026-11-08 10:26	Announcing
216.20.148.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.149.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.151.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.152.0/21	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.152.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.153.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.154.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.155.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.156.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.158.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	Announcing
216.20.159.0/24	AS16433	North Central Communications	United States	Before monitoring	2026-11-08 10:26	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: 216.20.144.0/20
Country: United States
Allocation date: 2021-09-07
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.