ResearchRouting table, looking glass, RPKI & IRR

63.250.128.0/18 British Telecommunications Limited

Announced by AS3300 British Telecommunications Limited. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 63.250.128.0/18

Prefix
63.250.128.0/18
Origin
AS3300 BT
RPKI
RPKI valid
Size
16,384 addresses
Less specific
none
More specifics
33
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-15 00:02 UTC
Paths

How 63.250.128.0/18 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 1299 3300
OriginAS3300 British Telecommunications Limited
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated21h 0m ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 3300
OriginAS3300 British Telecommunications Limited
Origin codeIGP
Communities903:900 903:13760
Updated7d 7h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 3300
OriginAS3300 British Telecommunications Limited
Origin codeIGP
Communities36295:100
Updated7d 7h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 3300
OriginAS3300 British Telecommunications Limited
Origin codeIGP
Communitiesnone
Updated7d 7h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 1299 3300
OriginAS3300 British Telecommunications Limited
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated11d 0h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS3300 to originate 63.250.128.0/18 up to /18. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
63.250.128.0/18/18AS3300 BTARIN
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
63.250.128.0/18AS3300 BTARINBT-IP-ICG/GIIBMNT-INFO
63.250.128.0/18AS3300 BTREACHREACH (Customer Route)MAINT-REACH-NOC
More specific

Prefixes inside 63.250.128.0/18

33 announced prefixes fall inside this one.

Show the 33 prefixes
63.250.128.0/22 AS3300 BT63.250.131.0/24 AS3300 BT63.250.132.0/22 AS3300 BT63.250.132.0/24 AS3300 BT63.250.135.0/24 AS3300 BT63.250.136.0/23 AS3300 BT63.250.138.0/24 AS3300 BT63.250.139.0/24 AS3300 BT63.250.140.0/22 AS3300 BT63.250.144.0/22 AS3300 BT63.250.144.0/24 AS3300 BT63.250.147.0/24 AS3300 BT63.250.148.0/22 AS3300 BT63.250.151.0/24 AS3300 BT63.250.152.0/22 AS3300 BT63.250.155.0/24 AS3300 BT63.250.156.0/22 AS3300 BT63.250.159.0/24 AS3300 BT63.250.160.0/22 AS3300 BT63.250.163.0/24 AS3300 BT63.250.164.0/24 AS3300 BT63.250.165.0/24 AS3300 BT63.250.168.0/22 AS3300 BT63.250.171.0/24 AS3300 BT63.250.172.0/24 AS3300 BT63.250.173.0/24 AS3300 BT63.250.174.0/24 AS3300 BT63.250.176.0/22 AS3300 BT63.250.180.0/22 AS3300 BT63.250.184.0/22 AS3300 BT63.250.187.0/24 AS3300 BT63.250.189.0/24 AS3300 BT63.250.191.0/24 AS3300 BT
Tools

Check 63.250.128.0/18 live

Looking glassIP to ASN APIRPKI APIIRR API