129.19.240.0/20 University of Colorado at Boulder
Announced by AS104 University of Colorado at Boulder. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 129.19.240.0/20
Prefix
Origin
AS104 COLORADO-AS
RPKI
RPKI valid
Size
4,096 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 5 covering
In RouteViews
2026-10-14 08:02 UTC
Paths
How 129.19.240.0/20 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 3356 104
| Origin | AS104 University of Colorado at Boulder |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 6h 52m ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 104
| Origin | AS104 University of Colorado at Boulder |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 17h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 3356 104
| Origin | AS104 University of Colorado at Boulder |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 17h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS104 to originate 129.19.240.0/20 up to /20. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 129.19.240.0/20 | /20 | AS104 COLORADO-AS | ARIN |
| 129.19.192.0/18 | /18 | AS104 COLORADO-AS | ARIN |
| 129.19.0.0/16 | /16 | AS14041 AS-FRGP | ARIN |
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 |
|---|---|---|---|---|
| 129.19.240.0/20 | AS104 COLORADO-AS | ARIN | Colorado State University | MNT-CSU-2-Z |
| 129.19.240.0/20 | AS104 COLORADO-AS | RADB | University of Colorado Boulder | MAINT-AS14041 |
| 129.19.192.0/18 covering | AS104 COLORADO-AS | ARIN | Colorado State University | MNT-CSU-2-Z |
| 129.19.192.0/18 covering | AS104 COLORADO-AS | RADB | University of Colorado Boulder | MAINT-AS14041 |
| 129.19.0.0/16 covering | AS14041 AS-FRGP | ARIN | Colorado State University | MNT-CSU-2-Z |
| 129.19.0.0/16 covering | AS31991 PRPA | LEVEL3 | Proxy-registered route object | LEVEL3-MNT |
| 129.19.0.0/16 covering | AS14041 AS-FRGP | RADB | Front Range GigaPoP at UCD 1200 Larimer Street Denver, CO 80204, USA http://www.frgp.net/ | MAINT-AS14041 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.