Data as of Nov 8, 2026
206.176.57.0/24
2 residential-proxy exits · 30 daysUniversity of South Dakota · space held by South Dakota State Government
Residential-proxy exits
Proxy exits
2
0.78% of its addresses · 30 days
Providers
5
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
7 observations
Proxy providers listing exits
- ColaProxy
- EnigmaProxy
- NovaProxy
- Thordata
- VantageProxies
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 206.176.32.0/19 since Apr 2011 | AS14263 | Business | 5 1 always on | 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. | 512 | SDNET-BLK2-57-58 | USD Medical School (UMS-3) · US | Reassigned | Oct 15, 1996 | Cheryl. |
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
AS11736
US
- Name
- University of South Dakota
- Type
- Education
- Registered
- Dec 3, 1998
- Domain
- usd.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
- May 2005
- Current origin since
- Feb 2026 · 8 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 206.176.57.0/24 | AS11736 | /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 |
|---|---|---|---|---|
| AS11736 | ARIN | State of South Dakota - RIS | MNT-SDSG | Sep 24, 2021 |
Whois
Registration for this announcement
- Range
- 206.
176. 57. 0 - 206. 176. 58. 255 - Netname
- SDNET-BLK2-57-58
- Registrant
- USD Medical School
- Organization
- USD Medical School (UMS-3)
- Org address
- 1400 West 22nd Street, Sioux Falls, SD, 57105
- Org country
- US
- Type
- Reassigned
- Handle
- NET-206-176-57-0-1
- Parent
- NET-206-176-0-0-1
- Created
- Oct 15, 1996
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 26, 1995
- Status
- assigned
Report abuse
Abuse contact
- Cheryl.
Tiahrt@ usd. edu - Name
- Tiahrt, Cheryl
- Phone
- +1-605-658-6025
- Handle
- CT509-ARIN