123.151.72.0/22 Tianjij,300000
Announced by AS58542 Tianjij,300000. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 123.151.72.0/22
Prefix
Origin
AS58542 CHINATELECOM-TIANJIN
RPKI
RPKI valid
Size
1,024 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 3 covering
In RouteViews
2026-10-12 20:02 UTC
Paths
How 123.151.72.0/22 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 174 4134 58542
| Origin | AS58542 Tianjij,300000 |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 4d 19h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4134 58542
| Origin | AS58542 Tianjij,300000 |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 3h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4134 58542
| Origin | AS58542 Tianjij,300000 |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 3h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS58542 to originate 123.151.72.0/22 up to /22. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 123.151.72.0/22 | /22 | AS58542 CHINATELECOM-TIANJIN | APNIC |
| 123.151.0.0/17 | /17 | AS17638 CHINATELECOM-TJ-AS-AP | APNIC |
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 123.151.72.0/22 | AS4134 CHINANET-BACKBONE | LEVEL3 | Proxy-registered route object | XINGXUNTECHLTD-MNT |
| 123.151.72.0/22 | AS58542 CHINATELECOM-TIANJIN | RADB | chinanet/CN2 TianJin province network | MAINT-AS58542 |
| 123.151.0.0/17 covering | AS17638 CHINATELECOM-TJ-AS-AP | RADB | ASN for TIANJIN Provincial Net of CT | MAINT-CT-GNOC |
| 123.151.0.0/16 covering | AS17638 CHINATELECOM-TJ-AS-AP | RADB | ASN for TIANJIN Provincial Net of CT | MAINT-CT-GNOC |
| 123.150.0.0/15 covering | AS17638 CHINATELECOM-TJ-AS-AP | RADB | ASN for TIANJIN Provincial Net of CT | MAINT-CT-GNOC |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.