Data as of Nov 5, 2026
83.230.64.0/24
2 residential-proxy exits · 30 daysSilesian University of Technology, Computer Centre
Residential-proxy exits
Proxy exits
2
0.78% of its addresses · 30 days
Providers
26
selling exits here
Oct 6, 2026 – Nov 4, 2026
Exits seen per day
218 observations
Proxy providers listing exits
- 2Extract
- Ake.net
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- FloppyData
- Geonode
- GonzoProxy
- Infatica
- InfiniteProxies
- LemonLabs
- MangoProxy
- NodeMaven
- NodeProxy
- NovaProxy
- Proxies.fo
- Proxy-Seller
- ProxyEmpire
- ProxyGeo
- Proxyma
- ResiProxies
- Shifter
- VibeProxies
- VitalExclusive
- VitalProxy
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 83.230.64.0/20 since Aug 2011 | AS8508 | Business | 12 1 always on | Silesian University of Technology, Computer Centre |
Registrations in this block
The registry's network records over this block, widest first, each 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@ |
| └ 83.230.64.0/21 | 2,048 | SUM | Slaski Uniwersytet Medyczny w Katowicach | ASSIGNED PA | Aug 8, 2011 | abuse@ |
Network & registry
Announced by
Covering announcement 83.230.64.0/21
- Prefix
- 83.230.64.0/21
- Announced by
- AS8508 Silesian University of Technology, Computer Centre
- Type
- Business
- Proxy exits
- 12
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- SUM
- Registrant
- Slaski Uniwersytet Medyczny w Katowicach
- RIR
- RIPE NCC
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
83.230.64.0/21
Routing history
- Pattern
- Stable
- First seen
- Mar 2021
- Current origin since
- Mar 2021 · 5.7 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 83.230.64.0/21 | AS8508 | /21 | RIPE | RPKI valid |
| 83.230.64.0/20 | AS8508 | /20 | RIPE | Too specific |
IRR
Route objects on 83.230.64.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8508 | RIPE | PL-CKPOLSL-NET-20040521-EDU | PL-CKPOLSL-MNT | Nov 6, 2023 |
Whois
Registration for this announcement
- Range
- 83.
230. 64. 0/ 21 - Netname
- SUM
- Registrant
- Slaski Uniwersytet Medyczny w Katowicach
- Registrant country
- PL
- Organization
- Slaski Uniwersytet Medyczny w Katowicach
- Org country
- PL
- Type
- ASSIGNED PA
- Created
- Aug 8, 2011
- Updated
- Jul 31, 2018
- Maintainer
- PL-CKPOLSL-MNT
- RIR
- RIPE NCC
- Country
- PL
- Delegated
- May 21, 2004
- Status
- assigned
Report abuse
Abuse contact
- abuse@
sum. edu. pl - Name
- SUM Admins
- Handle
- SUM-RIPE