Data as of Nov 5, 2026
151.159.222.0/23
No anonymizer space · no proxy exits in 30 daysSouth Dakota Board of Regents · space held by South Dakota School of Mines & Technology
Network & registry
Origin network
AS33189
US
- Name
- South Dakota Board of Regents
- Type
- Education
- Registered
- Oct 20, 2004
- Domain
- sdbor.edu
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2011
- Current origin since
- Sep 2019 · 7.1 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 151.159.220.0/22 | AS33189 | /24 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS33189 | ARIN | IP used and advertised by SD Board of Regents for SDSMT | MNT-SDSMT-1-Z | Sep 16, 2024 |
Whois
Registration for this announcement
- Range
- 151.
159. 0. 0/ 16 - Netname
- SDSMTNET
- Registrant
- South Dakota School of Mines & Technology
- Organization
- South Dakota School of Mines & Technology (SDSMT-1-Z)
- Org address
- 501 East Saint Joseph Street, Rapid City, SD, 57701-3995
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-151-159-0-0-1
- Parent
- NET-151-0-0-0-0
- Created
- Jul 30, 1991
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 30, 1991
- Status
- assigned
Report abuse
Abuse contact
- Steve.
Bauer@ sdsmt. edu - Name
- Bauer, Steve
- Phone
- +1-605-394-1234
- Handle
- SB164-ARIN