ResearchRouting table, looking glass, RPKI & IRR

139.220.243.0/24 China Unicom Beijing Province Network

Announced by AS4808 China Unicom Beijing Province Network. RPKI valid Seen by 5 of our 5 looking glass sessions. Also originated by AS17638

Summary

What the table says about 139.220.243.0/24

Prefix

Origin

AS4808 CHINA169-BJ

RPKI

RPKI valid

Size

256 addresses

Less specific

none

More specifics

IRR route objects

0 exact, 5 covering

In RouteViews

2026-10-15 16:02 UTC

Paths

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 4134 17638

Origin	AS17638 ASN for TIANJIN Provincial Net of CT
Origin code	incomplete
Communities	174:21001 174:22013 36601:150 36601:174 36601:2001
Updated	7d 14h ago

AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4134 17638

Origin	AS17638 ASN for TIANJIN Provincial Net of CT
Origin code	IGP
Communities	903:900 903:13760
Updated	7d 23h ago

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4134 17638

Origin	AS17638 ASN for TIANJIN Provincial Net of CT
Origin code	IGP
Communities	36295:100
Updated	7d 23h ago

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 4134 17638

Origin	AS17638 ASN for TIANJIN Provincial Net of CT
Origin code	IGP
Communities	none
Updated	7d 23h ago

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 4134 17638

Origin	AS17638 ASN for TIANJIN Provincial Net of CT
Origin code	incomplete
Communities	174:21001 174:22013 36295:100 36295:174
Updated	11d 16h ago

RPKI

Covered by a ROA authorizing AS4808 to originate 139.220.192.0/18 up to /24. Validate another origin.

ROA prefix	Max length	Authorized origin	Trust anchor
139.220.242.0/23	/23	AS38019 CMNET-V4TIANJIN-AS-AP	APNIC
139.220.240.0/22	/23	AS4808 CHINA169-BJ	APNIC
139.220.240.0/22	/23	AS17638 CHINATELECOM-TJ-AS-AP	APNIC
139.220.240.0/22	/23	AS38019 CMNET-V4TIANJIN-AS-AP	APNIC
139.220.192.0/18	/24	AS4808 CHINA169-BJ	APNIC
139.220.192.0/18	/24	AS7468 CYBEREC-AS-AP	APNIC
139.220.192.0/18	/24	AS17638 CHINATELECOM-TJ-AS-AP	APNIC
139.220.192.0/18	/24	AS37965 CNNIC-PBSL-AP	APNIC
139.220.192.0/18	/24	AS38019 CMNET-V4TIANJIN-AS-AP	APNIC
139.220.192.0/18	/24	AS55988 CNNIC-PBSL-AP	APNIC

IRR

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

Route	Origin	Source	Description	Maintained by
139.220.242.0/23 covering	AS38019 CMNET-V4TIANJIN-AS-AP	RADB	CMI (Customer Route)	MAINT-AS58453
139.220.240.0/22 covering	AS4134 CHINANET-BACKBONE	LEVEL3	Proxy-registered route object	XINGXUNTECHLTD-MNT
139.220.240.0/22 covering	AS4808 CHINA169-BJ	LEVEL3	Proxy-registered route object	XINGXUNTECHLTD-MNT
139.220.240.0/22 covering	AS17638 CHINATELECOM-TJ-AS-AP	RADB	ASN for TIANJIN Provincial Net of CT	MAINT-CT-GNOC
139.220.128.0/17 covering	AS38019 CMNET-V4TIANJIN-AS-AP	RADB	CMI (Customer Route)	MAINT-AS58453

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