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Data as of Nov 10, 2026

166.185.0.0/16

No anonymizer space · no proxy exits in 30 days

AT&T Enterprises, LLC

Announcement

this exact prefix

RPKI valid

Announced by

Type

Mobile

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
166.184.0.0/15 since May 2022	AS20057	Mobile	3	AT&T Enterprises, LLC
166.184.0.0/13 since Aug 2026	AS7018	Residential	3	AT&T Enterprises, LLC

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
166.185.0.0/17 since Feb 2006	AS20057	Mobile	AT&T Enterprises, LLC
166.185.128.0/17 since Feb 2006	AS20057	Mobile	AT&T Enterprises, LLC
166.185.144.0/23 since Dec 2017	AS20057	Mobile	AT&T Enterprises, LLC
166.185.204.0/23 since Apr 2019	AS20057	Mobile	AT&T Enterprises, LLC
166.185.207.0/24 since Apr 2019	AS20057	Mobile	AT&T Enterprises, LLC
166.185.212.0/24 since Apr 2019	AS20057	Mobile	AT&T Enterprises, LLC

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Routing timeline

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern: Stable
First seen: May 2005
Current origin since: May 2020 · 6.5 yr
Origin networks: 2
Last change of origin: May 2020

Recorded history

History

Handoffs: 1