ResearchRouting table, looking glass, RPKI & IRR

79.121.128.0/17 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 79.121.128.0/17

Prefix
79.121.128.0/17
Origin
AS3257 GTT-BACKBONE
RPKI
RPKI not found
Size
32,768 addresses
Less specific
none
More specifics
51
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-13 20:02 UTC
Paths

How 79.121.128.0/17 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 19h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 3257
OriginAS3257 GTT Communications Inc.
Origin codeIGP
Communities903:900 903:13760
Updated6d 3h 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
Updated9h 20m 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
Updated6d 3h 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 20h 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
79.121.128.0/17AS3257 GTT-BACKBONERIPEGTTAS3257-ROUTE-MNT
79.121.128.0/17AS8190 MDNXRIPEGFN-UK-AGGREGATEAS8190-MNT
More specific

Prefixes inside 79.121.128.0/17

51 announced prefixes fall inside this one.

Show the 51 prefixes
79.121.129.0/24 AS3320 DTAG79.121.131.0/24 AS3320 DTAG79.121.132.0/23 AS212238 CDNEXT79.121.134.0/23 AS212238 CDNEXT79.121.137.0/24 AS3320 DTAG79.121.140.0/23 AS212238 CDNEXT79.121.142.0/23 AS212238 CDNEXT79.121.144.0/23 AS212238 CDNEXT79.121.146.0/24 AS3320 DTAG79.121.148.0/23 AS8881 VERSATEL79.121.150.0/23 AS212238 CDNEXT79.121.154.0/23 AS8881 VERSATEL79.121.156.0/23 AS212238 CDNEXT79.121.162.0/23 AS8881 VERSATEL79.121.164.0/23 AS8881 VERSATEL79.121.166.0/23 AS212238 CDNEXT79.121.168.0/23 AS212238 CDNEXT79.121.170.0/24 AS3320 DTAG79.121.172.0/24 AS3320 DTAG79.121.175.0/24 AS3320 DTAG79.121.178.0/23 AS212238 CDNEXT79.121.180.0/23 AS212238 CDNEXT79.121.182.0/24 AS3320 DTAG79.121.184.0/23 AS212238 CDNEXT79.121.188.0/23 AS9009 M24779.121.194.0/23 AS9009 M24779.121.197.0/24 AS3320 DTAG79.121.199.0/24 AS3320 DTAG79.121.200.0/21 AS3257 GTT-BACKBONE79.121.208.0/23 AS9009 M24779.121.210.0/24 AS3320 DTAG79.121.212.0/23 AS212238 CDNEXT79.121.214.0/23 AS212238 CDNEXT79.121.216.0/23 AS212238 CDNEXT79.121.218.0/23 AS212238 CDNEXT79.121.221.0/24 AS3320 DTAG79.121.222.0/23 AS9009 M24779.121.225.0/24 AS3320 DTAG79.121.226.0/23 AS9009 M24779.121.229.0/24 AS3320 DTAG79.121.230.0/24 AS3320 DTAG79.121.232.0/23 AS212238 CDNEXT79.121.234.0/23 AS212238 CDNEXT79.121.236.0/24 AS3320 DTAG79.121.238.0/23 AS9009 M24779.121.240.0/24 AS3320 DTAG79.121.243.0/24 AS3320 DTAG79.121.245.0/24 AS3320 DTAG79.121.248.0/24 AS3320 DTAG79.121.250.0/24 AS3320 DTAG79.121.255.0/24 AS3320 DTAG
Tools

Check 79.121.128.0/17 live

Looking glassIP to ASN APIRPKI APIIRR API