199.232.0.0/16

Currently announced by AS54113 Fastly, Inc., in the routed prefix 199.232.0.0/16.

Current ASN: AS54113; Fastly, Inc.
Routed prefix: 199.232.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 199.232.0.0/16

Routing data · Oct 24, 2026, 04:19 UTC

ASN historyEvery routed prefix covering 199.232.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
199.232.0.0/16	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing

More specific routes49 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
199.232.4.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.12.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.16.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.24.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.32.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.40.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.44.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.48.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.52.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.56.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.60.0/22	AS54113	Fastly, Inc.	United States	2026-10-23 18:21	2026-10-24 04:19	Announcing
199.232.64.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.68.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.72.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.80.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.88.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.92.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.100.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.104.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.108.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.112.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.116.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.120.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.124.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.132.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.136.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.140.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.144.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.148.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.152.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.156.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.160.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.164.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.168.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.172.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.176.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.180.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.184.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.188.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.192.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.196.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.208.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.212.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.216.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.224.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.228.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.232.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.240.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	Announcing
199.232.252.0/22	AS54113	Fastly, Inc.	United States	Before monitoring	2026-10-24 04:19	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: 199.232.0.0/16
Country: United States
Allocation date: 2016-04-14
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.