ResearchRouting table, looking glass, RPKI & IRR

37.25.128.0/17 Fastweb SpA

Announced by AS12663 Fastweb SpA. RPKI valid Seen by 5 of our 5 looking glass sessions. Also originated by AS1273

Summary

What the table says about 37.25.128.0/17

Prefix
37.25.128.0/17
Origin
AS12663 VODAFONE-GROUP
RPKI
RPKI valid
Size
32,768 addresses
Less specific
none
More specifics
11
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-14 08:02 UTC
Paths

How 37.25.128.0/17 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 1273
OriginAS1273 IDDQD-AS
Origin codeIGP
Communities174:21100 174:22007 36601:150 36601:174 36601:2001
Updated4d 12h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 3257 1273
OriginAS1273 IDDQD-AS
Origin codeIGP
Communities903:900 903:13760
Updated4d 12h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 1273
OriginAS1273 IDDQD-AS
Origin codeIGP
Communities36295:100
Updated13h 36m ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 1273
OriginAS1273 IDDQD-AS
Origin codeIGP
Communitiesnone
Updated13h 36m ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 1273
OriginAS1273 IDDQD-AS
Origin codeIGP
Communities174:21100 174:22007 36295:100 36295:174
Updated4d 12h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS12663 to originate 37.25.128.0/17 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
37.25.128.0/17/17AS1273 CWRIPE
37.25.128.0/17/24AS12663 VODAFONE-GROUPRIPE
37.25.128.0/17/24AS201917 VF-GROUP-DC1RIPE
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
37.25.128.0/17AS1273 CWRIPEVF-Group InternetMNT-ON
37.25.128.0/17AS12663 VODAFONE-GROUPRIPEVodafone Group ServicesMNT-ON
More specific

Prefixes inside 37.25.128.0/17

11 announced prefixes fall inside this one.

Show the 11 prefixes
37.25.128.0/21 AS12663 VODAFONE-GROUP37.25.136.0/21 AS12663 VODAFONE-GROUP37.25.147.0/24 AS201917 VF-GROUP-DC137.25.148.0/24 AS201917 VF-GROUP-DC137.25.165.0/24 AS12663 VODAFONE-GROUP37.25.168.0/24 AS201917 VF-GROUP-DC137.25.171.0/24 AS201917 VF-GROUP-DC137.25.176.0/20 AS12663 VODAFONE-GROUP37.25.186.0/23 AS12663 VODAFONE-GROUP37.25.237.0/24 AS12663 VODAFONE-GROUP37.25.244.0/24 AS201917 VF-GROUP-DC1
Tools

Check 37.25.128.0/17 live

Looking glassIP to ASN APIRPKI APIIRR API