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Data as of Nov 9, 2026

198.133.16.0/20

No anonymizer space · no proxy exits in 30 days

AT&T Enterprises, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS7018
Type
Residential

Announcements

More specific

Announcements inside

PrefixOriginTypeHolderRPKI
198.133.19.0/24
since May 2005
AS2685ResidentialAT&T Enterprises, LLC

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
198.133.16.0/204,096ATT-198-133-16-0-CAT&T Enterprises, LLC (AEL-360) · USDirect AllocationApr 22, 1993abuse@att.net
└ 198.133.16.0/24256IBM-HPCC1unknown———
└ 198.133.17.0/24256IBM-HPCC2unknown———
└ 198.133.19.0/24256IBM-HPCC4IBM Corporation (C00002193) · USReassignedApr 22, 1993abuse@att.net
via ATT-198-133-16-0-C
└ 198.133.20.0/24256IBM-HPCC5unknown———
└ 198.133.21.0/24256IBM-HPCC6unknown———
└ 198.133.22.0/24256IBM-HPCC7unknown———
└ 198.133.23.0/24256IBM-HPCC8unknown———
└ 198.133.24.0/24256IBM-HPCC9unknown———
└ 198.133.25.0/24256IBM-HPCC10unknown———
└ 198.133.26.0/24256IBM-HPCC11unknown———
└ 198.133.27.0/24256IBM-HPCC12unknown———
└ 198.133.28.0/24256IBM-HPCC13unknown———
└ 198.133.29.0/24256IBM-HPCC14unknown———
└ 198.133.30.0/24256IBM-HPCC15unknown———
└ 198.133.31.0/24256IBM-HPCC16unknown———

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS7018

US
Name
AT&T Enterprises, LLC
Type
Internet provider
Registered
Jul 30, 1996
Domain
att.com
Website
www.att.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed