Data as of Nov 3, 2026

166.201.0.0/16

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

Prefix	Origin	Type	Proxy exits	Holder	RPKI
166.200.0.0/14 since Aug 2026	AS7018	Residential	3	AT&T Enterprises, LLC

Nesting

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.

More specific

Arrived

Sort

Prefix	Origin	Type	Holder
166.201.23.0/24 since Jan 2014	AS20057	Mobile	AT&T Enterprises, LLC
166.201.32.0/20 since Aug 2016	AS20057	Mobile	AT&T Enterprises, LLC
166.201.176.0/21 since Jul 2017	AS20057	Mobile	AT&T Enterprises, LLC
166.201.184.0/22 since Jul 2017	AS20057	Mobile	AT&T Enterprises, LLC
166.201.188.0/22 since Apr 2019	AS20057	Mobile	AT&T Enterprises, LLC
166.201.193.0/24 since Jan 2018	AS20057	Mobile	AT&T Enterprises, LLC
166.201.196.0/22 since Mar 2018	AS20057	Mobile	AT&T Enterprises, LLC
166.201.201.0/24 since Dec 2016	AS20057	Mobile	AT&T Enterprises, LLC
166.201.204.0/24 since Mar 2018	AS20057	Mobile	AT&T Enterprises, LLC
166.201.206.0/23 since Jul 2014	AS20057	Mobile	AT&T Enterprises, LLC
166.201.208.0/22 since Nov 2014	AS20057	Mobile	AT&T Enterprises, LLC
166.201.215.0/24 since Feb 2015	AS20057	Mobile	AT&T Enterprises, LLC
166.201.220.0/22 since Feb 2018	AS20057	Mobile	AT&T Enterprises, LLC
166.201.225.0/24 since Apr 2018	AS20057	Mobile	AT&T Enterprises, LLC
166.201.226.0/24 since Mar 2019	AS20057	Mobile	AT&T Enterprises, LLC
166.201.228.0/23 since May 2019	AS20057	Mobile	AT&T Enterprises, LLC
166.201.230.0/23 since Jul 2019	AS20057	Mobile	AT&T Enterprises, LLC
166.201.232.0/23 since Mar 2018	AS20057	Mobile	AT&T Enterprises, LLC

Origin network

RPKI

ROA prefix	ASN	Max len	Anchor	Verdict
166.201.0.0/16	AS20057	/16	ARIN	RPKI valid
166.200.0.0/14	AS7018	/14	ARIN	Another network

IRR

Origin	Registry	Description	Maintainer	Modified
AS20057	ARIN	AT&T Enterprises, LLC	MNT-AEL-360	Sep 15, 2026