108.146.0.0/16

Currently announced by AS20057 AT&T Enterprises, LLC, in the routed prefix 108.146.0.0/16.

Current ASN: AS20057; AT&T Enterprises, LLC
Routed prefix: 108.146.0.0/16; Most specific route covering this prefix
ASNs over time: 2; 2 announcement records
RIR allocation: ARIN; United States · 108.144.0.0/13

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 108.146.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
108.146.0.0/16	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.144.0.0/14	AS7018	AT&T US - 7018	United States	Before monitoring	2026-11-08 10:26	Announcing

More specific routes50 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
108.146.0.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.5.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.6.0/23	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.8.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.12.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.25.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.28.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.29.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.31.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.34.0/23	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.36.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.38.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.40.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.44.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.46.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.48.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.49.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.52.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.56.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.60.0/23	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.62.0/23	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.64.0/21	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.72.0/21	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.80.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.84.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.88.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.91.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.92.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.94.0/23	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.96.0/20	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.114.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.115.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.117.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.120.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.124.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.125.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.126.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.128.0/18	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.194.0/23	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.196.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.198.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.199.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.200.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.204.0/22	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.208.0/21	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.216.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.217.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.218.0/24	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.220.0/23	AS20057	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-08 10:26	Announcing
108.146.224.0/19	AS20057	AT&T Enterprises, LLC	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: 108.144.0.0/13
Country: United States
Allocation date: 2010-06-21
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.