220.248.0.0/18 China Unicom Shanghai network
Announced by AS17621 China Unicom Shanghai network. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 220.248.0.0/18
Prefix
Origin
AS17621 CNCGROUP-SH
RPKI
RPKI valid
Size
16,384 addresses
Less specific
none
More specifics
3
IRR route objects
3 exact, 2 covering
In RouteViews
2026-10-13 20:02 UTC
Paths
How 220.248.0.0/18 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 4837×2 17621
| Origin | AS17621 China Unicom Shanghai network |
| Origin code | incomplete |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 5d 20h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4837×2 17621
| Origin | AS17621 China Unicom Shanghai network |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 12h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4837 17621
| Origin | AS17621 China Unicom Shanghai network |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 4h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS17621 to originate 220.248.0.0/18 up to /18. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 220.248.0.0/18 | /18 | AS17621 CNCGROUP-SH | 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 |
|---|---|---|---|---|
| 220.248.0.0/18 | AS17621 CNCGROUP-SH | APNIC | China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street | MAINT-CNCGROUP-RR |
| 220.248.0.0/18 | AS17621 CNCGROUP-SH | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK |
| 220.248.0.0/18 | AS17621 CNCGROUP-SH | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 220.248.0.0/17 covering | AS17621 CNCGROUP-SH | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 220.248.0.0/14 covering | AS9929 CUII | APNIC | China Unicom CncNet | MAINT-CNCGROUP-RR |
More specific
Prefixes inside 220.248.0.0/18
3 announced prefixes fall inside this one.