221.121.0.0/18 Sai gon Postel Corporation
Announced by AS7602 Sai gon Postel Corporation. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 221.121.0.0/18
Prefix
Origin
AS7602 SPT-AS-VN
RPKI
RPKI valid
Size
16,384 addresses
Less specific
none
More specifics
8
IRR route objects
3 exact, 0 covering
In RouteViews
2026-10-17 12:01 UTC
Paths
How 221.121.0.0/18 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 13760 3356 1299 45896 38738 135943 7602
| Origin | AS7602 Sai gon Postel Corporation |
| Origin code | IGP |
| Communities | 3356:3 3356:22 3356:86 3356:575 3356:666 3356:901 3356:2013 36601:150 36601:2001 36601:13760 |
| Updated | 1d 14h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 1299 45896 38738 135943 7602
| Origin | AS7602 Sai gon Postel Corporation |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 9d 19h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 4637×4 45896 38738 135943 7602
| Origin | AS7602 Sai gon Postel Corporation |
| Origin code | IGP |
| Communities | 6461:5998 36295:100 36295:6461 |
| Updated | 2d 21h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS7602 to originate 221.121.0.0/18 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 221.121.0.0/18 | /24 | AS7602 SPT-AS-VN | 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 |
|---|---|---|---|---|
| 221.121.0.0/18 | AS7602 SPT-AS-VN | APNIC | SPT-VN | MAINT-VN-SPT |
| 221.121.0.0/18 | AS7602 SPT-AS-VN | NTTCOM | SPT-AS-VN | MAINT-VN-VNNIC |
| 221.121.0.0/18 | AS7602 SPT-AS-VN | RADB | Saigon Postel Corporation | MAINT-AS4766 |
More specific
Prefixes inside 221.121.0.0/18
8 announced prefixes fall inside this one.