ResearchRouting table, looking glass, RPKI & IRR

123.151.0.0/16 ASN for TIANJIN Provincial Net of CT

Announced by AS17638 ASN for TIANJIN Provincial Net of CT. RPKI not found Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 123.151.0.0/16

Prefix
123.151.0.0/16
Origin
AS17638 CHINATELECOM-TJ-AS-AP
RPKI
RPKI not found
Size
65,536 addresses
Less specific
123.150.0.0/15 AS17638 CHINATELECOM-TJ-AS-AP
More specifics
50
IRR route objects
1 exact, 1 covering
In RouteViews
2026-10-13 20:02 UTC
Paths

How 123.151.0.0/16 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 4134 17638
OriginAS17638 ASN for TIANJIN Provincial Net of CT
Origin codeIGP
Communities174:21001 174:22013 36601:150 36601:174 36601:2001
Updated5d 19h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4134 17638
OriginAS17638 ASN for TIANJIN Provincial Net of CT
Origin codeIGP
Communities903:900 903:13760
Updated6d 3h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4134 17638
OriginAS17638 ASN for TIANJIN Provincial Net of CT
Origin codeIGP
Communities36295:100
Updated6d 3h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 4134 17638
OriginAS17638 ASN for TIANJIN Provincial Net of CT
Origin codeIGP
Communities174:21001 174:22013
Updated6d 3h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 4134 17638
OriginAS17638 ASN for TIANJIN Provincial Net of CT
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated9d 20h ago
RPKI

Route origin authorizations

No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.

IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
123.151.0.0/16AS17638 CHINATELECOM-TJ-AS-APRADBASN for TIANJIN Provincial Net of CTMAINT-CT-GNOC
123.150.0.0/15 coveringAS17638 CHINATELECOM-TJ-AS-APRADBASN for TIANJIN Provincial Net of CTMAINT-CT-GNOC
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

123.150.0.0/15 AS17638 CHINATELECOM-TJ-AS-AP
More specific

Prefixes inside 123.151.0.0/16

50 announced prefixes fall inside this one.

Show the 50 prefixes
123.151.0.0/17 AS17638 CHINATELECOM-TJ-AS-AP123.151.0.0/21 AS17638 CHINATELECOM-TJ-AS-AP123.151.8.0/24 AS58542 CHINATELECOM-TIANJIN123.151.9.0/24 AS58542 CHINATELECOM-TIANJIN123.151.10.0/23 AS58542 CHINATELECOM-TIANJIN123.151.12.0/22 AS58542 CHINATELECOM-TIANJIN123.151.17.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.20.0/24 AS132536 CHINANET-TIANJIN-MAN-NEW123.151.21.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.24.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.26.0/23 AS58542 CHINATELECOM-TIANJIN123.151.39.0/24 AS58542 CHINATELECOM-TIANJIN123.151.40.0/24 AS58542 CHINATELECOM-TIANJIN123.151.42.0/24 AS58542 CHINATELECOM-TIANJIN123.151.46.0/24 AS58542 CHINATELECOM-TIANJIN123.151.47.0/24 AS58542 CHINATELECOM-TIANJIN123.151.48.0/20 AS58542 CHINATELECOM-TIANJIN123.151.64.0/21 AS58542 CHINATELECOM-TIANJIN123.151.72.0/22 AS58542 CHINATELECOM-TIANJIN123.151.76.0/22 AS58542 CHINATELECOM-TIANJIN123.151.89.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.92.0/22 AS58542 CHINATELECOM-TIANJIN123.151.96.0/20 AS58542 CHINATELECOM-TIANJIN123.151.112.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.113.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.124.0/24 AS132536 CHINANET-TIANJIN-MAN-NEW123.151.126.0/23 AS17638 CHINATELECOM-TJ-AS-AP123.151.128.0/21 AS17638 CHINATELECOM-TJ-AS-AP123.151.130.0/23 AS17638 CHINATELECOM-TJ-AS-AP123.151.137.0/24 AS58542 CHINATELECOM-TIANJIN123.151.138.0/24 AS58542 CHINATELECOM-TIANJIN123.151.139.0/24 AS58542 CHINATELECOM-TIANJIN123.151.144.0/24 AS58542 CHINATELECOM-TIANJIN123.151.146.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.147.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.148.0/22 AS58542 CHINATELECOM-TIANJIN123.151.152.0/22 AS58542 CHINATELECOM-TIANJIN123.151.156.0/23 AS58542 CHINATELECOM-TIANJIN123.151.158.0/24 AS58542 CHINATELECOM-TIANJIN123.151.162.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.163.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.165.0/24 AS132536 CHINANET-TIANJIN-MAN-NEW123.151.173.0/24 AS17638 CHINATELECOM-TJ-AS-AP123.151.176.0/22 AS58542 CHINATELECOM-TIANJIN123.151.180.0/24 AS58542 CHINATELECOM-TIANJIN123.151.181.0/24 AS58542 CHINATELECOM-TIANJIN123.151.182.0/24 AS58542 CHINATELECOM-TIANJIN123.151.183.0/24 AS58542 CHINATELECOM-TIANJIN123.151.190.0/24 AS58542 CHINATELECOM-TIANJIN123.151.192.0/18 AS4809 CHINATELECOM-CORE-WAN-CN2
Tools

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