ResearchRouting table, looking glass, RPKI & IRR

12.120.57.0/24 AT&T Enterprises, LLC

Announced by AS7291 AT&T Enterprises, LLC. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 12.120.57.0/24

Prefix
12.120.57.0/24
Origin
AS7291 SBIS-BLK
RPKI
RPKI valid
Size
256 addresses
Less specific
12.112.0.0/12 AS7018 ATT-INTERNET4
More specifics
0
IRR route objects
1 exact, 3 covering
In RouteViews
2026-10-15 12:02 UTC
Paths

How 12.120.57.0/24 is reached

Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.

AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 174 7018 7291
OriginAS7291 AT&T Enterprises, LLC
Origin codeincomplete
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated7d 12h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 7018 7291
OriginAS7291 AT&T Enterprises, LLC
Origin codeIGP
Communities903:900 903:13760
Updated7d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 7018 7291
OriginAS7291 AT&T Enterprises, LLC
Origin codeIGP
Communities36295:100
Updated7d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 7018 7291
OriginAS7291 AT&T Enterprises, LLC
Origin codeIGP
Communitiesnone
Updated7d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 7018 7291
OriginAS7291 AT&T Enterprises, LLC
Origin codeincomplete
Communities174:21000 174:22013 36295:100 36295:174
Updated11d 14h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS7291 to originate 12.120.57.0/24 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
12.120.57.0/24/24AS7291 SBIS-BLKARIN
12.112.0.0/12/12AS7018 ATT-INTERNET4ARIN
IRR

Route objects

Registered in the IRR for this prefix and the ones covering it. Look it up live.

RouteOriginSourceDescriptionMaintained by
12.120.57.0/24AS7291 SBIS-BLKARINAT&T Enterprises, LLCMNT-AEL-360
12.112.0.0/12 coveringAS7018 ATT-INTERNET4ARINAT&T Enterprises, LLCMNT-AEL-360
12.0.0.0/9 coveringAS7018 ATT-INTERNET4ARIN12/8 lower halfMNT-AEL-360
12.0.0.0/8 coveringAS7018 ATT-INTERNET4ARINATT_NET-TWELVEMNT-AEL-360
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

12.112.0.0/12 AS7018 ATT-INTERNET412.0.0.0/9 AS7018 ATT-INTERNET412.0.0.0/8 AS7018 ATT-INTERNET4
Tools

Check 12.120.57.0/24 live

Looking glassIP to ASN APIRPKI APIIRR API