Data as of Nov 13, 2026

12.13.40.0/21

No anonymizer space · no proxy exits in 30 days

Silver Star Telecom, LLC · space held by AT&T Enterprises, LLC

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

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
12.0.0.0/9AS7018Residential8,124
289 always on
AT&T Enterprises, LLC
12.0.0.0/8AS7018Residential13,497
535 always on
AT&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
12.0.0.0/816,777,216ATTAT&T Enterprises, LLC (AEL-360) · USDirect AllocationAug 23, 1983abuse@att.net
└ 12.13.40.0/212,048SILVER-S319-40Silver Star Telecomsilver Star Telecom (C07759057) · USReassignedFeb 20, 2021abuse@att.net
via ATT

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

Routing timeline

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern
Stable
First seen
Aug 2006
Current origin since
May 2010 · 17 yr
Origin networks
2
Last change of origin
May 2010
Recorded history

History

Handoffs
1