151.159.220.0/23 South Dakota Board of Regents
Announced by AS33189 South Dakota Board of Regents. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 151.159.220.0/23
Prefix
Origin
AS33189 SOUTH-DAKOTA-RESEARCH-AND-EDUCATION-NETWORK
RPKI
RPKI valid
Size
512 addresses
Less specific
none
More specifics
0
IRR route objects
1 exact, 1 covering
In RouteViews
2026-10-14 04:02 UTC
Paths
How 151.159.220.0/23 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 11232 14263 33189
| Origin | AS33189 South Dakota Board of Regents |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 6d 4h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 6939 11232 14263 33189
| Origin | AS33189 South Dakota Board of Regents |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 12h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 11232 14263 33189
| Origin | AS33189 South Dakota Board of Regents |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 12h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS33189 to originate 151.159.220.0/22 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 151.159.220.0/22 | /24 | AS33189 SOUTH-DAKOTA-RESEARCH-AND-EDUCATION-NETWORK | 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 |
|---|---|---|---|---|
| 151.159.220.0/23 | AS33189 SOUTH-DAKOTA-RESEARCH-AND-EDUCATION-NETWORK | ARIN | IP used and advertised by SD Board of Regents for SDSMT 501 East Saint Joseph Street Rapid City SD 57701-3995 United States | MNT-SDSMT-1-Z |
| 151.159.220.0/22 covering | AS33189 SOUTH-DAKOTA-RESEARCH-AND-EDUCATION-NETWORK | ARIN | IP addresses used and Advertised by SD Boad of Regents for SDSMT 501 East Saint Joseph Street Rapid City SD 57701-3995 United States | MNT-SDSMT-1-Z |