Data as of Nov 5, 2026
206.176.18.0/24
No anonymizer space · no proxy exits in 30 daysSouth Dakota Board of Regents · space held by South Dakota State Government
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 206.176.16.0/20 since Apr 2011 | AS14263 | Business | 14 | South Dakota State Government |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 206.176.0.0/17 | 32,768 | DDNNET-BLK-1 | South Dakota State Government (SDSG) · US | Direct Allocation | Oct 26, 1995 | Jeff. |
| └ 206.176.18.0/24 | 256 | NET-SDNET-BLK2-18 | South Dakota Board of Regents (SDBR) · US | Reassigned | Sep 29, 1996 | — |
Network & registry
Registry
Holder
- Organization
- South Dakota State Government
- Handle
- SDSG
- Range
- 206.
176. 0. 0/ 17 - Registration type
- Direct Allocation
- Record created
- Oct 26, 1995
- Legacy
- yes
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
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2010
- Current origin since
- Feb 2026 · 8 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 206.176.18.0/24 | AS33189 | /24 | ARIN | RPKI valid |
| 206.176.0.0/17 | AS14263 | /24 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS33189 | ARIN | State of South Dakota - RIS | MNT-SDSG | Sep 24, 2021 |
Whois
Registration for this announcement
- Range
- 206.
176. 18. 0/ 24 - Netname
- NET-SDNET-BLK2-18
- Registrant
- South Dakota Board of Regents
- Organization
- South Dakota Board of Regents (SDBR)
- Org address
- 4801 N. Career Ave., Suite 121, Sioux Falls, SD, 57107
- Org country
- US
- Type
- Reassigned
- Handle
- NET-206-176-18-0-1
- Parent
- NET-206-176-0-0-1
- Created
- Sep 29, 1996
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 26, 1995
- Status
- assigned
Report abuse
Abuse contact
- darren.
tieman@ sdbor. edu - Name
- Tieman, Darren
- Phone
- +1-605-549-5252
- Handle
- DTI10-ARIN