Data as of Nov 8, 2026
31.133.111.0/24
1 residential-proxy exit · 30 daysFederal State Budgetary Educational Institution of Higher Education 'Novosibirsk State Architectural and Construction University (Sibstrin)'
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
20
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
236 observations
Proxy providers listing exits
- BirdProxies
- Byteful
- CliProxy
- EnigmaProxy
- FlexyProxies
- GSocks
- Geonix
- IPPeak
- Infatica
- MangoProxy
- NodeProxy
- NovaProxy
- Proxiware
- Proxy-Seller
- ProxyEmpire
- Proxyma
- RainProxy
- Shifter
- VantageProxies
- VitalExclusive
Network & registry
Announced by
Covering announcement 31.133.104.0/21
- Prefix
- 31.133.104.0/21
- Announced by
- AS197768 Federal State Budgetary Educational Institution of Higher Education 'Novosibirsk State Architectural and Construction University (Sibstrin)'
- Type
- Business
- Proxy exits
- 4
- RPKI
- RPKI valid
- Netname
- SIBSTRIN
- Registrant
- Federal State Budgetary Educational Institution of Higher Education "Novosibirsk State Architectural and Construction University (Sibstrin)"
- RIR
- RIPE NCC
Origin network
AS197768
RU
- Name
- Federal State Budgetary Educational Institution of Higher Education 'Novosibirsk State Architectural and Construction University (Sibstrin)'
- Type
- Education
- Registered
- Apr 21, 2011
- Domain
- sibstrin.ru
- Website
- sibstrin.ru
- Industry
- Freight, Shipment, and Postal Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 31.133.104.0/21
31.133.104.0/21
Routing history
- Pattern
- Stable
- First seen
- Dec 2011
- Current origin since
- Dec 2011 · 15 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 31.133.104.0/21 | AS197768 | /21 | RIPE | RPKI valid |
IRR
Route objects on 31.133.104.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS197768 | RIPE | Novosibirsk State University of Architecture and Civil | SIBSTRIN-MNT | Dec 2, 2011 |
Whois
Registration for this announcement
- Range
- 31.
133. 104. 0/ 21 - Netname
- SIBSTRIN
- Registrant
- Federal State Budgetary Educational Institution of Higher Education "Novosibirsk State Architectural and Construction University (Sibstrin)"
- Registrant country
- RU
- Organization
- Federal State Budgetary Educational Institution of Higher Education "Novosibirsk State Architectural and Construction University (Sibstrin)" (ORG-SA874-RIPE)
- Org country
- RU
- Type
- ASSIGNED PI
- Created
- Apr 19, 2011
- Updated
- Sep 29, 2026
- Maintainer
- RIPE-NCC-END-MNT
- RIR
- RIPE NCC
- Country
- RU
- Delegated
- Apr 19, 2011
- Status
- assigned
Report abuse
Abuse contact
- noc@
sibstrin. ru - Name
- Abuse-C Role
- Handle
- AR18522-RIPE