Data as of Nov 5, 2026
83.230.99.0/24
21 residential-proxy exits · 30 daysSilesian University of Technology, Computer Centre
Residential-proxy exits
Proxy exits
21
8.2% of its addresses · 30 days
Providers
13
selling exits here
Oct 6, 2026 – Nov 4, 2026
Exits seen per day
38 observations
Proxy providers listing exits
- 2Extract
- BirdProxies
- Byteful
- EnigmaProxy
- GSocks
- Infatica
- LemonBright
- MangoProxy
- NodeProxy
- Proxy-Seller
- Proxyma
- Shifter
- VantageProxies
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 83.230.96.0/19 since Jun 2009 | AS8508 | Business | 26 | Silesian University of Technology, Computer Centre |
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 |
|---|---|---|---|---|---|---|
| 83.230.0.0/17 | 32,768 | PL-CKPOLSL-20040521 | Silesian University of Technology, Computer Centre (ORG-CSUO1-RIPE) · PL | ALLOCATED PA | May 21, 2004 | abuse@ |
| └ 83.230.99.0/24 | 256 | BIELMAN | Uniwersytet Bielsko-Bialski | ASSIGNED PA | Dec 20, 2023 | abuse@ |
Network & registry
Registry
Holder
- Organization
- Silesian University of Technology, Computer Centre
- Handle
- ORG-CSUO1-RIPE
- Range
- 83.
230. 0. 0/ 17 - Registration type
- ALLOCATED PA
- Record created
- May 21, 2004
Origin network
AS8508
PL
- Name
- Silesian University of Technology, Computer Centre
- Type
- Education
- Registered
- Oct 13, 1997
- Domain
- polsl.pl
- Website
- www.polsl.pl/rju1-ck/sask/
- 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
- Dec 2025
- Current origin since
- Dec 2025 · 11 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 83.230.99.0/24 | AS8508 | /24 | RIPE | RPKI valid |
| 83.230.96.0/19 | AS8508 | /19 | RIPE | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8508 | RIPE | PL-CKPOLSL-NET-20040521-EDU | PL-CKPOLSL-MNT | Dec 20, 2023 |
Whois
Registration for this announcement
- Range
- 83.
230. 99. 0/ 24 - Netname
- BIELMAN
- Registrant
- Uniwersytet Bielsko-Bialski
- Registrant country
- PL
- Organization
- Uniwersytet Bielsko-Bialski
- Org country
- PL
- Type
- ASSIGNED PA
- Created
- Dec 20, 2023
- Updated
- Mar 11, 2025
- Maintainer
- PL-CKPOLSL-MNT
- RIR
- RIPE NCC
- Country
- PL
- Delegated
- May 21, 2004
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ubb. edu. pl - Name
- Uniwersytet Bielsko-Bialski
- Handle
- AT10986-RIPE