146.75.0.0/17

Currently announced by AS54113 Fastly, Inc., in the routed prefix 146.75.0.0/17.

Current ASN: AS54113; Fastly, Inc.
Routed prefix: 146.75.0.0/17; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: RIPENCC; United States · 146.75.0.0/16

Routing data · Nov 1, 2026, 22:23 UTC

ASN historyEvery routed prefix covering 146.75.0.0/17

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
146.75.0.0/17	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing

More specific routes30 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
146.75.0.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.4.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.8.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.12.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.16.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.20.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.24.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.28.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.36.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.40.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.44.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.48.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.52.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.60.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.64.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.68.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.72.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.76.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.80.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.84.0/22	AS54113	Fastly, Inc.	United States	2026-10-29 06:23	2026-11-01 22:23	Announcing
146.75.88.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.92.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.96.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.100.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.104.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.108.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.112.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.116.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.120.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	Announcing
146.75.124.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-11-01 22:23	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: RIPENCC
Allocated block: 146.75.0.0/16
Country: United States
Allocation date: 1991-01-23
Status: assigned

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.