122.255.192.0/18 JCOM Co., Ltd.
Announced by AS4721 JCOM Co., Ltd. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 122.255.192.0/18
Prefix
Origin
AS4721 JCN
RPKI
RPKI valid
Size
16,384 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 2 covering
In RouteViews
2026-10-14 16:02 UTC
Paths
How 122.255.192.0/18 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 2516 9824×3 4721
| Origin | AS4721 JCOM Co., Ltd. |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 6d 16h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 2516 9824×3 4721
| Origin | AS4721 JCOM Co., Ltd. |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 7d 0h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 9824 4721
| Origin | AS4721 JCOM Co., Ltd. |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 7d 0h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS4721 to originate 122.255.128.0/17 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 122.255.128.0/17 | /24 | AS4721 JCN | APNIC |
| 122.255.128.0/17 | /24 | AS9824 JTCL-JP-AS | 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 |
|---|---|---|---|---|
| 122.255.192.0/18 | AS4721 JCN | JPIRR | JCOM Co., Ltd. (J:COM) | MAINT-AS9824 |
| 122.255.192.0/18 | AS4721 JCN | RADB | J:COM (former JCN) | MAINT-AS9824 |
| 122.255.128.0/17 covering | AS4721 JCN | JPIRR | JCOM Co., Ltd. (J:COM) | MAINT-AS9824 |
| 122.255.128.0/17 covering | AS4721 JCN | RADB | J:COM (former JCN) | MAINT-AS9824 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.