Data as of Nov 9, 2026

166.137.172.0/24

1 residential-proxy exit · 30 days

AT&T Enterprises, LLC

Announcement

166.137.172.0/22

RPKI valid

Announced by

AS20057

Type

Mobile

Risk

10 / 100 · Low

Shared address

Residential-proxy exits

Proxy exits

0.39% of its addresses · 30 days

Providers

selling exits here

Oct 10, 2026 – Nov 8, 2026

Exits seen per day

3 observations

Proxy providers listing exits

FastProxy

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder
166.137.128.0/17 since Apr 2006	AS20057	Mobile	73 1 always on	AT&T Enterprises, LLC
166.137.0.0/16 since Aug 2006	AS20057	Mobile	244 1 always on	AT&T Enterprises, LLC
166.136.0.0/15 since Aug 2026	AS7018	Residential	244 1 always on	AT&T Enterprises, LLC

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Announced by

Covering announcement 166.137.172.0/22

Prefix: 166.137.172.0/22
Announced by: AS20057 AT&T Enterprises, LLC
Type: Mobile
Proxy exits: 27
RPKI: RPKI valid
Netname: AEL-360
Registrant: AT&T Enterprises, LLC
RIR: ARIN

Origin network

AS20057

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

166.137.172.0/24

Residential-proxy exits

Exits seen per day

Proxy providers listing exits

Announcements

Covering announcements

Network & registry

Covering announcement 166.137.172.0/22

AS20057

Covering aggregate above, the prefix's own history below

Routing history

Route origin authorizations

Registration for this announcement

Abuse contact

ROA prefix	ASN	Max len	Anchor	Verdict
166.137.0.0/16	AS20057	/24	ARIN	RPKI valid
166.136.0.0/15	AS7018	/15	ARIN	Another network