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Data as of Nov 3, 2026

166.200.0.0/16

No anonymizer space · no proxy exits in 30 days

AT&T Enterprises, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS20057
Type
Mobile

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
166.200.0.0/14
since Aug 2026
AS7018Residential3AT&T Enterprises, LLC
Nesting

More-specifics by size

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

Announcements inside

PrefixOriginTypeHolderRPKI
166.200.1.0/24
since Nov 2015
AS20057MobileAT&T Enterprises, LLC
166.200.4.0/24
since Jan 2018
AS20057MobileAT&T Enterprises, LLC
166.200.36.0/23
since Oct 2018
AS20057MobileAT&T Enterprises, LLC
166.200.40.0/23
since Mar 2015
AS20057MobileAT&T Enterprises, LLC
166.200.42.0/23
since Jul 2015
AS20057MobileAT&T Enterprises, LLC
166.200.112.0/24
since Aug 2014
AS20057MobileAT&T Enterprises, LLC
166.200.117.0/24
since Nov 2017
AS20057MobileAT&T Enterprises, LLC
166.200.118.0/24
since Dec 2017
AS20057MobileAT&T Enterprises, LLC
166.200.119.0/24
since Nov 2015
AS20057MobileAT&T Enterprises, LLC
166.200.161.0/24
since Nov 2013
AS20057MobileAT&T Enterprises, LLC
166.200.186.0/23
since Oct 2015
AS20057MobileAT&T Enterprises, LLC
166.200.212.0/22
since Mar 2015
AS20057MobileAT&T Enterprises, LLC
166.200.218.0/23
since Dec 2013
AS20057MobileAT&T Enterprises, LLC
166.200.220.0/24
since Dec 2013
AS20057MobileAT&T Enterprises, LLC
166.200.232.0/22
since Jan 2017
AS20057MobileAT&T Enterprises, LLC

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS20057

US
Name
AT&T Enterprises, LLC
Type
Internet provider
Registered
Mar 20, 2001
Domain
att.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed