Data as of Nov 3, 2026

66.4.78.0/24

No anonymizer space · no proxy exits in 30 days

AT&T Enterprises, LLC · space held by State of Tennessee Department of Education

Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
66.4.0.0/16
since Aug 2016
AS19957Business2State of Tennessee Department of Education

Network & registry

Origin network

AS19957

US
Name
AT&T Enterprises, LLC
Type
Education
Registered
Mar 5, 2003
Domain
att.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed