155.165.0.0/16

Currently announced by AS7018 AT&T US - 7018, in the routed prefix 155.165.0.0/16.

Current ASN: AS7018; AT&T US - 7018
Routed prefix: 155.165.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 155.165.0.0/16

Routing data · Nov 2, 2026, 04:24 UTC

ASN historyEvery routed prefix covering 155.165.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
155.165.0.0/16	AS7018	AT&T US - 7018	United States	Before monitoring	2026-11-02 04:24	Announcing

More specific routes68 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
155.165.4.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.5.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.6.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.7.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.11.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.13.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.15.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.16.0/22	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.18.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.19.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.22.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.26.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.28.0/22	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.32.0/21	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.32.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.43.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.45.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.47.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.48.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.49.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.50.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.54.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.55.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.56.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.56.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.58.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.58.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.59.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.60.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.61.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.63.0/24	AS7018	AT&T US - 7018	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.64.0/19	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.66.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.68.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.68.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.71.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.72.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.73.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.77.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.88.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.90.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.91.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.92.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.94.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.95.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.98.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.99.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.100.0/23	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.102.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.103.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.104.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.106.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.107.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.108.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.109.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.110.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.113.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.117.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.122.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.123.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.125.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.126.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.127.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.128.0/19	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.160.0/19	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.192.0/19	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.224.0/19	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-11-02 04:24	Announcing
155.165.44.0/24	AS7287	AT&T Enterprises, LLC	United States	Before monitoring	2026-10-28 16:21	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: 155.165.0.0/16
Country: United States
Allocation date: 1992-03-24
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.