ResearchRouting table, looking glass, RPKI & IRR

208.54.0.0/17 T-Mobile USA, Inc.

Announced by AS21928 T-Mobile USA, Inc. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 208.54.0.0/17

Prefix
208.54.0.0/17
Origin
AS21928 T-MOBILE-AS21928
RPKI
RPKI valid
Size
32,768 addresses
Less specific
none
More specifics
42
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-14 12:02 UTC
Paths

How 208.54.0.0/17 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 21928
OriginAS21928 T-Mobile USA, Inc.
Origin codeIGP
Communities174:21001 174:22013 36601:150 36601:174 36601:2001
Updated2d 0h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 1299 174 21928
OriginAS21928 T-Mobile USA, Inc.
Origin codeIGP
Communities903:900 903:13760
Updated2d 0h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 6461 21928
OriginAS21928 T-Mobile USA, Inc.
Origin codeIGP
Communities36295:100
Updated37m 26s ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 21928
OriginAS21928 T-Mobile USA, Inc.
Origin codeIGP
Communities174:21001 174:22013
Updated2d 0h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 21928
OriginAS21928 T-Mobile USA, Inc.
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated2d 0h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS21928 to originate 208.54.0.0/17 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
208.54.0.0/17/24AS21928 T-MOBILE-AS21928ARIN
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
208.54.0.0/17AS21928 T-MOBILE-AS21928ARINUSAMNT-TMOBI
208.54.0.0/17AS21928 T-MOBILE-AS21928RADBT-Mobile USAMAINT-AS21928
More specific

Prefixes inside 208.54.0.0/17

42 announced prefixes fall inside this one.

Show the 42 prefixes
208.54.1.0/24 AS21928 T-MOBILE-AS21928208.54.2.0/24 AS21928 T-MOBILE-AS21928208.54.4.0/24 AS21928 T-MOBILE-AS21928208.54.5.0/24 AS21928 T-MOBILE-AS21928208.54.7.0/24 AS21928 T-MOBILE-AS21928208.54.16.0/24 AS21928 T-MOBILE-AS21928208.54.18.0/24 AS21928 T-MOBILE-AS21928208.54.19.0/24 AS21928 T-MOBILE-AS21928208.54.20.0/24 AS21928 T-MOBILE-AS21928208.54.22.0/24 AS400318 VERSA-01208.54.23.0/24 AS400318 VERSA-01208.54.32.0/24 AS21928 T-MOBILE-AS21928208.54.33.0/24 AS400318 VERSA-01208.54.34.0/24 AS21928 T-MOBILE-AS21928208.54.35.0/24 AS21928 T-MOBILE-AS21928208.54.36.0/24 AS21928 T-MOBILE-AS21928208.54.37.0/24 AS21928 T-MOBILE-AS21928208.54.39.0/24 AS21928 T-MOBILE-AS21928208.54.40.0/24 AS21928 T-MOBILE-AS21928208.54.44.0/24 AS21928 T-MOBILE-AS21928208.54.57.0/24 AS21928 T-MOBILE-AS21928208.54.66.0/24 AS21928 T-MOBILE-AS21928208.54.67.0/24 AS21928 T-MOBILE-AS21928208.54.70.0/24 AS21928 T-MOBILE-AS21928208.54.74.0/24 AS21928 T-MOBILE-AS21928208.54.75.0/24 AS21928 T-MOBILE-AS21928208.54.80.0/24 AS21928 T-MOBILE-AS21928208.54.81.0/24 AS400318 VERSA-01208.54.83.0/24 AS21928 T-MOBILE-AS21928208.54.85.0/24 AS21928 T-MOBILE-AS21928208.54.86.0/24 AS21928 T-MOBILE-AS21928208.54.87.0/24 AS21928 T-MOBILE-AS21928208.54.88.0/24 AS21928 T-MOBILE-AS21928208.54.90.0/24 AS21928 T-MOBILE-AS21928208.54.96.0/19 AS21928 T-MOBILE-AS21928208.54.97.0/24 AS21928 T-MOBILE-AS21928208.54.100.0/22 AS21928 T-MOBILE-AS21928208.54.104.0/24 AS21928 T-MOBILE-AS21928208.54.110.0/23 AS21928 T-MOBILE-AS21928208.54.112.0/24 AS21928 T-MOBILE-AS21928208.54.117.0/24 AS21928 T-MOBILE-AS21928208.54.127.0/24 AS21928 T-MOBILE-AS21928
Tools

Check 208.54.0.0/17 live

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