64.72.32.0/19

Currently announced by AS19108 Suddenlink Communications, in the routed prefix 64.72.32.0/19.

Current ASN: AS19108; Suddenlink Communications
Routed prefix: 64.72.32.0/19; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 64.72.32.0/19

Routing data · Nov 11, 2026, 18:22 UTC

ASN historyEvery routed prefix covering 64.72.32.0/19

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
64.72.32.0/19	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing

More specific routes17 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
64.72.34.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.36.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.37.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.38.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.39.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.40.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.41.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.42.0/23	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.45.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.49.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.50.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.55.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.56.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.57.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.63.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 18:22	Announcing
64.72.47.0/24	AS19108	Suddenlink Communications	United States	Before monitoring	2026-11-11 08:22	Stopped
64.72.54.0/24	AS19108	Suddenlink Communications	United States	2026-10-29 10:22	2026-11-02 16:44	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: 64.72.32.0/19
Country: United States
Allocation date: 2002-01-28
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.