ResearchRouting table, looking glass, RPKI & IRR

37.221.240.0/20 Jiri Tlapak

Announced by AS204666 Jiri Tlapak. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 37.221.240.0/20

Prefix
37.221.240.0/20
Origin
AS204666 TLAPNET-CZ
RPKI
RPKI valid
Size
4,096 addresses
Less specific
none
More specifics
10
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-12 02:24 UTC
Paths

How 37.221.240.0/20 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 13760 3356 1273 16019 204666
OriginAS204666 Jiri Tlapak
Origin codeIGP
Communities1273:12203 1273:43001 3356:3 3356:22 3356:86 3356:575 3356:666 3356:901 3356:2050 36601:150 36601:2001 36601:13760
Updated4d 0h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 1273 16019 204666
OriginAS204666 Jiri Tlapak
Origin codeIGP
Communities903:900 903:13760
Updated4d 8h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 16019 204666
OriginAS204666 Jiri Tlapak
Origin codeIGP
Communities36295:100
Updated4d 8h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 16019 204666
OriginAS204666 Jiri Tlapak
Origin codeIGP
Communitiesnone
Updated4d 8h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 39392 47232×4 204666
OriginAS204666 Jiri Tlapak
Origin codeIGP
Communities174:21101 174:22016 36295:100 36295:174
Updated8d 1h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS204666 to originate 37.221.240.0/20 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
37.221.240.0/20/32AS198668 TLAPNET-CZRIPE
37.221.240.0/20/24AS204666 TLAPNET-CZRIPE
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
37.221.240.0/20AS198668 TLAPNET-CZRIPETLAPNETTLAPNET-MNT
37.221.240.0/20AS204666 TLAPNET-CZRIPENTLAPNET-MNT
More specific

Prefixes inside 37.221.240.0/20

10 announced prefixes fall inside this one.

Show the 10 prefixes
37.221.241.0/24 AS204666 TLAPNET-CZ37.221.242.0/24 AS204666 TLAPNET-CZ37.221.243.0/24 AS204666 TLAPNET-CZ37.221.245.0/24 AS204666 TLAPNET-CZ37.221.247.0/24 AS204666 TLAPNET-CZ37.221.248.0/24 AS204666 TLAPNET-CZ37.221.249.0/24 AS204666 TLAPNET-CZ37.221.250.0/24 AS204666 TLAPNET-CZ37.221.251.0/24 AS204666 TLAPNET-CZ37.221.252.0/24 AS204666 TLAPNET-CZ
Tools

Check 37.221.240.0/20 live

Looking glassIP to ASN APIRPKI APIIRR API