ResearchRouting table, looking glass, RPKI & IRR

2a00:2000::/23 British Telecommunications Limited

Announced by AS5400 British Telecommunications Limited. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 2a00:2000::/23

Prefix
2a00:2000::/23
Origin
AS5400 BT
RPKI
RPKI valid
Size
2,199,023,255,552 /64s
Less specific
none
More specifics
16
IRR route objects
1 exact, 1 covering
In RouteViews
2026-10-12 12:08 UTC
Paths

How 2a00:2000::/23 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 5400
OriginAS5400 British Telecommunications Limited
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:2001
Updated4d 12h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 5400
OriginAS5400 British Telecommunications Limited
Origin codeIGP
Communities903:13760
Updated4d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 5400
OriginAS5400 British Telecommunications Limited
Origin codeIGP
Communities36295:100
Updated4d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 5400
OriginAS5400 British Telecommunications Limited
Origin codeIGP
Communities174:21000 174:22013
Updated4d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 5400
OriginAS5400 British Telecommunications Limited
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated8d 14h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS5400 to originate 2a00:2000::/23 up to /23. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
2a00:2000::/23/23AS5400 BTRIPE
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
2a00:2000::/23AS5400 BTRIPEBT aggregateCIP-MNT
2a00:2000::/22 coveringAS5400 BTRIPEBT aggregateCIP-MNT
More specific

Prefixes inside 2a00:2000::/23

16 announced prefixes fall inside this one.

Show the 16 prefixes
2a00:2080::/32 AS5400 BT2a00:2081::/32 AS5400 BT2a00:2082::/32 AS5400 BT2a00:2083::/32 AS5400 BT2a00:2084::/32 AS5400 BT2a00:2086::/32 AS5400 BT2a00:2089::/32 AS5400 BT2a00:208a::/32 AS5400 BT2a00:208b::/32 AS5400 BT2a00:208c::/32 AS5400 BT2a00:208d::/32 AS5400 BT2a00:2090::/32 AS5400 BT2a00:2094::/32 AS5400 BT2a00:2095::/32 AS5400 BT2a00:2096::/32 AS5400 BT2a00:2097::/32 AS5400 BT
Tools

Check 2a00:2000::/23 live

Looking glassIP to ASN APIRPKI APIIRR API