ResearchRouting table, looking glass, RPKI & IRR

210.51.48.0/22 China Unicom

Announced by AS138421 China Unicom. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 210.51.48.0/22

Prefix
210.51.48.0/22
Origin
AS138421 CU-CN-AS
RPKI
RPKI valid
Size
1,024 addresses
Less specific
210.51.0.0/16 AS9929 CUII
More specifics
1
IRR route objects
1 exact, 7 covering
In RouteViews
2026-10-12 20:02 UTC
Paths

How 210.51.48.0/22 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 7029 1299 4837 138421
OriginAS138421 China Unicom
Origin codeIGP
Communities7029:2090 36601:150 36601:2001 36601:13760
Updated4d 20h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 1299 4837 138421
OriginAS138421 China Unicom
Origin codeIGP
Communities903:900 903:13760
Updated5d 4h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4837 138421
OriginAS138421 China Unicom
Origin codeIGP
Communities36295:100
Updated5d 4h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 4837 138421
OriginAS138421 China Unicom
Origin codeIGP
Communitiesnone
Updated5d 4h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 4837×4 138421
OriginAS138421 China Unicom
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated8d 21h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS138421 to originate 210.51.48.0/22 up to /22. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
210.51.48.0/22/22AS138421 CU-CN-ASAPNIC
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
210.51.48.0/22AS138421 CU-CN-ASAPNICChina Unicom B811&A1218, China Unicom No.21, Jin-Rong StreetMAINT-CNCGROUP-RR
210.51.48.0/20 coveringAS17621 CNCGROUP-SHNTTCOMCMI IP TransitMAINT-CMI-INT-HK
210.51.48.0/20 coveringAS17621 CNCGROUP-SHRADBCMI (Customer Route)MAINT-AS58453
210.51.32.0/19 coveringAS4837 CHINA169-BackboneLEVEL3Proxy-registered route objectLEVEL3-MNT
210.51.32.0/19 coveringAS17621 CNCGROUP-SHNTTCOMCMI IP TransitMAINT-CMI-INT-HK
210.51.32.0/19 coveringAS17621 CNCGROUP-SHRADBCMI (Customer Route)MAINT-AS58453
210.51.0.0/16 coveringAS9929 CUIIAPNICCNC Group CncNetMAINT-CNCGROUP-RR
210.51.0.0/16 coveringAS9929 CUIILEVEL3CNC Route ObjectCHINANETCOM-MNT
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

210.51.0.0/16 AS9929 CUII
More specific

Prefixes inside 210.51.48.0/22

1 announced prefix fall inside this one.

Show the 1 prefixes
210.51.48.0/24 AS9929 CUII
Tools

Check 210.51.48.0/22 live

Looking glassIP to ASN APIRPKI APIIRR API