ResearchRouting table, looking glass, RPKI & IRR

72.37.128.0/17 GTT Communications Inc.

Announced by AS3257 GTT Communications Inc. RPKI not found Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 72.37.128.0/17

Prefix
72.37.128.0/17
Origin
AS3257 GTT-BACKBONE
RPKI
RPKI not found
Size
32,768 addresses
Less specific
none
More specifics
38
IRR route objects
1 exact, 0 covering
In RouteViews
2026-10-13 12:02 UTC
Paths

How 72.37.128.0/17 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 3257
OriginAS3257 GTT Communications Inc.
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated5d 10h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 3257
OriginAS3257 GTT Communications Inc.
Origin codeIGP
Communities903:900 903:13760
Updated5d 19h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 3257
OriginAS3257 GTT Communications Inc.
Origin codeIGP
Communities6461:5997 36295:100 36295:6461
Updated1h 16m ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 3257
OriginAS3257 GTT Communications Inc.
Origin codeIGP
Communities174:21000 174:22013
Updated5d 19h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 3257
OriginAS3257 GTT Communications Inc.
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated9d 12h ago
RPKI

Route origin authorizations

No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.

IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
72.37.128.0/17AS25973 AS-GTT-25973RADBMZIMA-NETBLK-03MAINT-AS3257
More specific

Prefixes inside 72.37.128.0/17

38 announced prefixes fall inside this one.

Show the 38 prefixes
72.37.128.0/23 AS23316 BAI-IP-SERVICES72.37.133.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.134.0/23 AS23316 BAI-IP-SERVICES72.37.136.0/24 AS19257 SUBRIGO72.37.137.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.139.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.140.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.141.0/24 AS23316 BAI-IP-SERVICES72.37.142.0/24 AS23316 BAI-IP-SERVICES72.37.143.0/24 AS3885472.37.146.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.148.0/22 AS11611 ARCTICFOX72.37.153.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.154.0/23 AS20001 TWC-20001-PACWEST72.37.157.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.159.0/24 AS19257 SUBRIGO72.37.160.0/23 AS20001 TWC-20001-PACWEST72.37.162.0/24 AS5065 BUNNY-COMMUNICATIONS-GLOBAL72.37.163.0/24 AS3257 GTT-BACKBONE72.37.164.0/23 AS20001 TWC-20001-PACWEST72.37.167.0/24 AS3885472.37.168.0/23 AS20001 TWC-20001-PACWEST72.37.170.0/24 AS3885472.37.174.0/23 AS20001 TWC-20001-PACWEST72.37.176.0/22 AS11611 ARCTICFOX72.37.180.0/22 AS23316 BAI-IP-SERVICES72.37.184.0/21 AS11611 ARCTICFOX72.37.192.0/21 AS11611 ARCTICFOX72.37.201.0/24 AS11403 NYINTERNET72.37.204.0/22 AS11611 ARCTICFOX72.37.208.0/22 AS11611 ARCTICFOX72.37.212.0/24 AS3257 GTT-BACKBONE72.37.214.0/23 AS20001 TWC-20001-PACWEST72.37.216.0/23 AS46562 PERFORMIVE72.37.224.0/21 AS7203 LEASEWEB-USA-SFO72.37.238.0/23 AS20001 TWC-20001-PACWEST72.37.240.0/23 AS20001 TWC-20001-PACWEST72.37.246.0/23 AS20001 TWC-20001-PACWEST
Tools

Check 72.37.128.0/17 live

Looking glassIP to ASN APIRPKI APIIRR API