ResearchRouting table, looking glass, RPKI & IRR

173.205.0.0/17 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 173.205.0.0/17

Prefix
173.205.0.0/17
Origin
AS3257 GTT-BACKBONE
RPKI
RPKI not found
Size
32,768 addresses
Less specific
none
More specifics
28
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-14 00:02 UTC
Paths

How 173.205.0.0/17 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 3257
OriginAS3257 GTT Communications Inc.
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated5d 22h 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 7h 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
Updated13h 3m 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 7h 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
Updated10d 0h 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
173.205.0.0/17AS4436 AS-GTT-4436RADBMzima ARIN Block 10MAINT-AS3257
173.205.0.0/17AS25973 AS-GTT-25973RADBMzima ARIN Block 10MAINT-AS3257
More specific

Prefixes inside 173.205.0.0/17

28 announced prefixes fall inside this one.

Show the 28 prefixes
173.205.1.0/24 AS3257 GTT-BACKBONE173.205.5.0/24 AS3257 GTT-BACKBONE173.205.6.0/23 AS20001 TWC-20001-PACWEST173.205.8.0/23 AS20001 TWC-20001-PACWEST173.205.14.0/23 AS20001 TWC-20001-PACWEST173.205.18.0/23 AS20001 TWC-20001-PACWEST173.205.21.0/24 AS3257 GTT-BACKBONE173.205.22.0/23 AS20001 TWC-20001-PACWEST173.205.26.0/24 AS55470 CYFUTURE-AS-IN173.205.28.0/22 AS11611 ARCTICFOX173.205.34.0/24 AS3257 GTT-BACKBONE173.205.68.0/24 AS55470 CYFUTURE-AS-IN173.205.69.0/24 AS20940 AKAMAI-ASN1173.205.70.0/23 AS20001 TWC-20001-PACWEST173.205.73.0/24 AS30058 FDCSERVERS173.205.74.0/23 AS20001 TWC-20001-PACWEST173.205.76.0/23 AS20940 AKAMAI-ASN1173.205.78.0/23 AS20001 TWC-20001-PACWEST173.205.82.0/23 AS207083 HostSlim-Global-Network173.205.86.0/23 AS35916 MULTA-ASN1173.205.89.0/24 AS18779 EGIHOSTING173.205.98.0/23 AS20001 TWC-20001-PACWEST173.205.112.0/24 AS55470 CYFUTURE-AS-IN173.205.114.0/23 AS20001 TWC-20001-PACWEST173.205.120.0/22 AS11611 ARCTICFOX173.205.124.0/23 AS54641 IMH-IAD173.205.126.0/24 AS54641 IMH-IAD173.205.127.0/24 AS54641 IMH-IAD
Tools

Check 173.205.0.0/17 live

Looking glassIP to ASN APIRPKI APIIRR API