165.217.64.0/20

Currently announced by AS3257 GTT Communications (AS3257), in the routed prefix 165.217.64.0/20.

Current ASN: AS3257; GTT Communications (AS3257)
Routed prefix: 165.217.64.0/20; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: —; No allocation record found

Routing data · Nov 1, 2026, 20:20 UTC

ASN historyEvery routed prefix covering 165.217.64.0/20

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
165.217.64.0/20	AS3257	GTT Communications (AS3257)	United States	2026-10-31 02:18	2026-11-01 20:20	Announcing

More specific routes16 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
165.217.64.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-26 00:23	Stopped
165.217.65.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.66.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.67.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.68.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.69.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.70.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.71.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.72.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.73.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.74.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.75.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.76.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.77.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.78.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
165.217.79.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped

Change logAll changes

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-10-31 02:18	165.217.64.0/20	New announcement	AS3257	GTT Communications (AS3257)	—	United States

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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.