140.110.200.0/21 National Center for High-performance Computing
Announced by AS7539 National Center for High-performance Computing. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 140.110.200.0/21
Prefix
Origin
AS7539 TWAREN-TW
RPKI
RPKI valid
Size
2,048 addresses
Less specific
More specifics
0
IRR route objects
1 exact, 5 covering
In RouteViews
2026-10-16 04:02 UTC
Paths
How 140.110.200.0/21 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 3491 9924 7539
| Origin | AS7539 National Center for High-performance Computing |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 8d 3h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 3491 9924 7539
| Origin | AS7539 National Center for High-performance Computing |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 8d 11h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 9924 7539
| Origin | AS7539 National Center for High-performance Computing |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 8d 11h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS7539 to originate 140.110.0.0/16 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 140.110.0.0/16 | /24 | AS7539 TWAREN-TW | APNIC |
| 140.110.0.0/15 | /15 | AS1659 ERX-TANET-ASN1 | 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 |
|---|---|---|---|---|
| 140.110.200.0/21 | AS7539 TWAREN-TW | APNIC | Taiwan Network Information Center 3F., No. 123, Sec. 4, Bade Rd., Songshan Dist. | MAINT-TW-TWNIC |
| 140.110.0.0/16 covering | AS7539 TWAREN-TW | APNIC | Taiwan Network Information Center 3F., No. 123, Sec. 4, Bade Rd., Songshan Dist. | MAINT-TW-TWNIC |
| 140.110.0.0/15 covering | AS1659 ERX-TANET-ASN1 | APNIC | TANet | MAINT-TW-TWNIC |
| 140.110.0.0/15 covering | AS1659 ERX-TANET-ASN1 | NTTCOM | TANET (proxy-registered route object) | MAINT-ASNET |
| 140.110.0.0/15 covering | AS1659 ERX-TANET-ASN1 | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 140.110.0.0/15 covering | AS9505 TWGATE-AP | REACH | REACH (Customer Route) | MAINT-REACH-NOC |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.