2a12:a303:100::/40 xTom Japan Corporation
Announced by AS3258 xTom Japan Corporation. RPKI valid Seen by 4 of our 5 looking glass sessions.
Summary
What the table says about 2a12:a303:100::/40
Prefix
Origin
AS3258 XTOM-JAPAN
RPKI
RPKI valid
Size
16,777,216 /64s
Less specific
none
More specifics
6
IRR route objects
3 exact, 19 covering
In RouteViews
2026-10-12 16:06 UTC
Paths
How 2a12:a303:100::/40 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 137409 3258×6
| Origin | AS3258 xTom Japan Corporation |
| Origin code | IGP |
| Communities | 13760:3000 36601:150 36601:2001 7578:800:7 |
| Updated | 4d 14h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 137409 3258×6
| Origin | AS3258 xTom Japan Corporation |
| Origin code | IGP |
| Communities | 903:13760 |
| Updated | 4d 22h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS3258 to originate 2a12:a300::/29 up to /48. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 2a12:a300::/29 | /48 | AS949 XTOM | RIPE |
| 2a12:a300::/29 | /48 | AS3204 XTOM-V-PS | RIPE |
| 2a12:a300::/29 | /48 | AS3214 XTOM | RIPE |
| 2a12:a300::/29 | /48 | AS3258 XTOM-JAPAN | RIPE |
| 2a12:a300::/29 | /128 | AS4785 XTOM-AS-JP | RIPE |
| 2a12:a300::/29 | /48 | AS6233 XTOM | RIPE |
| 2a12:a300::/29 | /48 | AS8888 XTOM | RIPE |
| 2a12:a300::/29 | /48 | AS9312 XTOM | RIPE |
| 2a12:a300::/29 | /128 | AS23748 CAT-AS-AP | RIPE |
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 |
|---|---|---|---|---|
| 2a12:a303:100::/40 | AS3258 XTOM-JAPAN | ALTDB | Customer Route | MAINT-AS206499 |
| 2a12:a303:100::/40 | AS3258 XTOM-JAPAN | RADB | Customer Route | MAINT-AS9312 |
| 2a12:a303:100::/40 | AS3258 XTOM-JAPAN | RIPE | Customer Route | XTOM |
| 2a12:a303::/32 covering | AS3258 XTOM-JAPAN | RADB | Customer Route | MAINT-AS9312 |
| 2a12:a303::/32 covering | AS3258 XTOM-JAPAN | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS949 XTOM | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS3204 XTOM-V-PS | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS3214 XTOM | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS3258 XTOM-JAPAN | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS4785 XTOM-AS-JP | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS6233 XTOM | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS8888 XTOM | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS9312 XTOM | RADB | N | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS23748 CAT-AS-AP | RADB | xTom Customer | MAINT-AS9312 |
| 2a12:a300::/29 covering | AS949 XTOM | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS3204 XTOM-V-PS | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS3214 XTOM | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS3258 XTOM-JAPAN | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS4785 XTOM-AS-JP | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS6233 XTOM | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS8888 XTOM | RIPE | N | XTOM |
| 2a12:a300::/29 covering | AS9312 XTOM | RIPE | N | XTOM |
More specific
Prefixes inside 2a12:a303:100::/40
6 announced prefixes fall inside this one.