ResearchRouting table, looking glass, RPKI & IRR

203.173.64.0/20 NF Park Bldg.3F, 9-15, Futaba 2-Chome

Announced by AS17977 NF Park Bldg.3F, 9-15, Futaba 2-Chome. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 203.173.64.0/20

Prefix
203.173.64.0/20
Origin
AS17977 SINGTEL-JP
RPKI
RPKI valid
Size
4,096 addresses
Less specific
none
More specifics
0
IRR route objects
3 exact, 0 covering
In RouteViews
2026-10-14 16:02 UTC
Paths

How 203.173.64.0/20 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 174 6461 7473 17977
OriginAS17977 NF Park Bldg.3F, 9-15, Futaba 2-Chome
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated6d 14h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 1299 7473 17977
OriginAS17977 NF Park Bldg.3F, 9-15, Futaba 2-Chome
Origin codeIGP
Communities903:900 903:13760
Updated6d 22h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 7473 17977
OriginAS17977 NF Park Bldg.3F, 9-15, Futaba 2-Chome
Origin codeIGP
Communities36295:100
Updated6d 22h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 7473 17977
OriginAS17977 NF Park Bldg.3F, 9-15, Futaba 2-Chome
Origin codeIGP
Communitiesnone
Updated6d 22h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 1299 7473 17977
OriginAS17977 NF Park Bldg.3F, 9-15, Futaba 2-Chome
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated10d 16h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS17977 to originate 203.173.64.0/20 up to /20. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
203.173.64.0/20/20AS7473 SINGTEL-AS-APAPNIC
203.173.64.0/20/20AS17977 SINGTEL-JPAPNIC
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
203.173.64.0/20AS7473 SINGTEL-AS-APAPNICSingapore Telecom Japan Ltd NF Park Building, 3F 9-15, Futaba 2-Chome ShinagawaMAINT-JP-STJP
203.173.64.0/20AS17977 SINGTEL-JPAPNICSingapore Telecom Japan Ltd NF Park Building, 3F 9-15, Futaba 2-Chome ShinagawaMAINT-JP-STJP
203.173.64.0/20AS17977 SINGTEL-JPNTTCOMSINGTEL-JP Temporary or proxy registrationMAINT-NTTCOM-BB
Tools

Check 203.173.64.0/20 live

Looking glassIP to ASN APIRPKI APIIRR API