12.221.136.0/22 NETSOURCE ONE, INC
Announced by AS54638 NETSOURCE ONE, INC. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 12.221.136.0/22
Prefix
Origin
AS54638 NSO
RPKI
RPKI not found
Size
1,024 addresses
Less specific
More specifics
4
IRR route objects
1 exact, 2 covering
In RouteViews
2026-10-12 20:02 UTC
Paths
How 12.221.136.0/22 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 13760 20115 22974 54638
| Origin | AS54638 NETSOURCE ONE, INC |
| Origin code | IGP |
| Communities | 13760:3109 36601:150 36601:2001 36601:13760 |
| Updated | 4d 18h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 20115 22974 54638
| Origin | AS54638 NETSOURCE ONE, INC |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 2h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 20115 22974 54638
| Origin | AS54638 NETSOURCE ONE, INC |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 2h 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.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 12.221.136.0/22 | AS54638 NSO | RADB | NetSource One | MAINT-CHTR-WD |
| 12.128.0.0/9 covering | AS7018 ATT-INTERNET4 | ARIN | 12/8 upper half | MNT-AEL-360 |
| 12.0.0.0/8 covering | AS7018 ATT-INTERNET4 | ARIN | ATT_NET-TWELVE | MNT-AEL-360 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.
More specific
Prefixes inside 12.221.136.0/22
4 announced prefixes fall inside this one.