Data as of Nov 8, 2026
206.176.36.0/24
No anonymizer space · no proxy exits in 30 daysCity of Sioux Falls · space held by South Dakota State Government
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Sep 2026
its first announcement on record
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. | 1,280 | SDNET-CITY-SF-1 | City of Sioux Falls (SIOU) · US | Reassigned | Feb 25, 2004 | — |
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
AS11480
US
- Name
- City of Sioux Falls
- Type
- Business
- Registered
- Oct 15, 2025
- Domain
- siouxfalls.gov
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2026
- Current origin since
- Sep 2026 · 2 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 206.176.36.0/24 | AS11480 | /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 |
|---|---|---|---|---|
| AS11480 | ARIN | South Dakota State Government | MNT-SDSG | Sep 18, 2026 |
Whois
Registration for this announcement
- Range
- 206.
176. 32. 0 - 206. 176. 36. 255 - Netname
- SDNET-CITY-SF-1
- Registrant
- City of Sioux Falls
- Organization
- City of Sioux Falls (SIOU)
- Org address
- 224 W. 9th St., Sioux Falls, SD, 57104
- Org country
- US
- Type
- Reassigned
- Handle
- NET-206-176-32-0-1
- Parent
- NET-206-176-0-0-1
- Created
- Feb 25, 2004
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 26, 1995
- Status
- assigned
Report abuse
Abuse contact
- kim.
hansen@ siouxfalls. gov - Name
- Hansen, Kim
- Phone
- +1-605-367-8260
- Handle
- HANSE224-ARIN