Data as of Nov 6, 2026
83.230.96.0/19
25 residential-proxy exits · 30 daysSilesian University of Technology, Computer Centre
Residential-proxy exits
Proxy exits
25
0.31% of its addresses · 30 days
Spread
6 of 32
/24s with at least one exit
Providers
26
selling exits here
Oct 7, 2026 – Nov 5, 2026
Exits seen per day
418 observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 83.230.99.0/24 | 0 | 20 | |
| 83.230.96.0/24 | 0 | 1 | |
| 83.230.103.0/24 | 0 | 1 | |
| 83.230.104.0/24 | 0 | 1 | |
| 83.230.110.0/24 | 0 | 1 | |
| 83.230.111.0/24 | 0 | 1 |
Proxy providers listing exits
- 2Captcha
- 2Extract
- BirdProxies
- ByteProxies
- Byteful
- EnigmaProxy
- FlashProxy
- FlexyProxies
- GSocks
- Geonix
- Geonode
- GonzoProxy
- Infatica
- LemonBright
- MangoProxy
- NodeProxy
- NovaProxy
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyGeo
- Proxyma
- RainProxy
- Shifter
- VantageProxies
- VitalExclusive
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 83.230.99.0/24 since Dec 2025 | AS8508 | Business | 20 | Silesian University of Technology, Computer Centre | |
| 83.230.110.0/24 since Mar 2017 | AS8508 | Business | 1 | Silesian University of Technology, Computer Centre | |
| 83.230.118.0/23 since Mar 2017 | AS8508 | Business | 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@ |
| └ 83.230.96.0/30 | 4 | ZSTR | Zespol Szkol Technicznych im. Stanislawa Staszica w Rybniku | ASSIGNED PA | May 28, 2009 | abuse@ |
| └ 83.230.96.12/30 | 4 | PSMR | Pa?stwowa Szko?a Muzyczna I i II stopnia im. Karola i Antoniego Szafranków | ASSIGNED PA | May 28, 2009 | sekretariat@ |
| └ 83.230.96.16/28 | 16 | SUM | Slaski Uniwersytet Medyczny w Katowicach | ASSIGNED PA | Jul 21, 2023 | abuse@ |
| └ 83.230.96.64/29 | 8 | BibliotekaSlaska | Biblioteka Slaska | ASSIGNED PA | Dec 27, 2013 | abuse@ |
| └ 83.230.96.72/30 | 4 | NIO-GLIWICE | Narodowy Instytut Onkologii | ASSIGNED PA | Jan 19, 2024 | artur. |
| └ 83.230.96.76/30 | 4 | BibliotekaSlaska | Biblioteka Slaska | ASSIGNED PA | Apr 21, 2021 | abuse@ |
| └ 83.230.96.80/28 | 16 | SASK-PLATON-U5 | Projekt Platon | ASSIGNED PA | Sep 21, 2010 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.96.96/27 | 32 | WST | Wyzsza Szkola Techniczna w Katowicach | ASSIGNED PA | Jul 11, 2022 | pawel. |
| └ 83.230.97.128/27 | 32 | UCK-CEGLANA | Uniwersyteckie Centrum Kliniczne im. prof. K. Gibinskiego | ASSIGNED PA | Apr 18, 2023 | informatyka@ |
| └ 83.230.97.192/27 | 32 | CMPiW-PAN-ZABRZE | Centrum Materia?ów Polimerowych i W?glowych Polskiej Akademii Nauk | ASSIGNED PA | Mar 31, 2010 | admin@ |
| └ 83.230.97.224/27 | 32 | NIO-GLIWICE | Narodowy Instytut Onkologii | ASSIGNED PA | Jan 19, 2024 | artur. |
| └ 83.230.98.0/24 | 256 | IMZ | Instytut Metalurgii Zelaza | ASSIGNED PA | Sep 1, 2009 | abuse@ |
| └ 83.230.99.0/24 | 256 | BIELMAN | Uniwersytet Bielsko-Bialski | ASSIGNED PA | Dec 20, 2023 | abuse@ |
| └ 83.230.101.0/26 | 64 | ICHN | Instytut Nawozow Sztucznych | ASSIGNED PA | Feb 11, 2011 | f11@ |
| └ 83.230.101.64/26 | 64 | AST-KRAKOW-BYTOM | Akademia Sztuk Teatralnych im. Stanis?awa Wyspia?skiego w Krakowie | ASSIGNED PA | Apr 27, 2012 | abuse@ |
| └ 83.230.102.64/26 | 64 | POLSL-DS-ALASKA-PG | POLSL DS Alaska PG | ASSIGNED PA | Jan 18, 2019 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.103.0/25 | 128 | WSB-POZNAN-CHORZOW | Wy?sza Szko?a Bankowa w Poznaniu | ASSIGNED PA | Feb 24, 2010 | abuse@ |
| └ 83.230.104.0/22 | 1,024 | WSB | Wyzsza Szkola Biznesu w Dabrowie Gorniczej | ASSIGNED PA | Nov 12, 2008 | abuse@ |
| └ 83.230.110.0/24 | 256 | ASP | Akademia Sztuk Pieknych w Katowicach | ASSIGNED PA | Mar 30, 2017 | it@ |
| └ 83.230.111.0/25 | 128 | AM | Akademia Muzyczna im. Karola Szymanowskiego w Katowicach | ASSIGNED PA | Mar 4, 2009 | abuse@ |
| └ 83.230.111.128/26 | 64 | ICHPW | Instytut Chemicznej Przeróbki W?gla | ASSIGNED PA | Mar 4, 2009 | abuse@ |
| └ 83.230.111.192/27 | 32 | ZSWSC | Zespó? Szkó? im. W?. Szybi?skiego w Cieszynie | ASSIGNED PA | Mar 12, 2015 | piotr. |
| └ 83.230.111.224/28 | 16 | ZSMER | Zespol Szkol Mechaniczno-Elektrycznych im. Tadeusza Kosciuszki w Rybniku | ASSIGNED PA | May 28, 2009 | abuse@ |
| └ 83.230.111.240/28 | 16 | PSMR | Pa?stwowa Szko?a Muzyczna I i II stopnia im. Karola i Antoniego Szafranków | ASSIGNED PA | May 28, 2009 | sekretariat@ |
| └ 83.230.112.0/24 | 256 | PJATK-BYTOM | Polsko-Japo?ska Akademia Technik Komputerowych | ASSIGNED PA | Mar 5, 2009 | abuse@ |
| └ 83.230.116.0/23 | 512 | EDUROAM-POLSL | eduroam project | ASSIGNED PA | Mar 3, 2009 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.118.0/23 | 512 | BIELMAN | Uniwersytet Bielsko-Bialski | ASSIGNED PA | Mar 30, 2017 | abuse@ |
| └ 83.230.120.0/24 | 256 | ZSTI | Zespol Szkol Techniczno - Informatycznych | ASSIGNED PA | May 26, 2004 | abuse@ |
| └ 83.230.121.0/24 | 256 | EMAG | Instytut Technik Innowacyjnych EMAG | ASSIGNED PA | May 27, 2004 | abuse@ |
| └ 83.230.122.0/24 | 256 | Lukasiewicz-GIT | Siec Badawcza Lukasiewicz - Gornoslaski Instytut Technologiczny | ASSIGNED PA | May 27, 2004 | sekretariat@ |
| └ 83.230.124.0/24 | 256 | IMZ | Instytut Metalurgii Zelaza | ASSIGNED PA | Sep 20, 2004 | abuse@ |
| └ 83.230.125.0/25 | 128 | KOMAG | Instytut Techniki Gorniczej KOMAG | ASSIGNED PA | Aug 4, 2004 | serwis@ |
| └ 83.230.125.128/25 | 128 | CMPiW-PAN-GLIWICE | Centrum Materia?ów Polimerowych i W?glowych Polskiej Akademii Nauk | ASSIGNED PA | Aug 4, 2004 | admin@ |
| └ 83.230.126.0/24 | 256 | UCK-MEDYKOW | Uniwersyteckie Centrum Kliniczne im. prof. K. Gibi?skiego | ASSIGNED PA | Mar 10, 2005 | informatyka@ |
| └ 83.230.127.0/28 | 16 | KOMAG | Instytut Techniki Gorniczej KOMAG | ASSIGNED PA | Aug 4, 2004 | serwis@ |
| └ 83.230.127.16/29 | 8 | AM | Akademia Muzyczna im. Karola Szymanowskiego w Katowicach | ASSIGNED PA | Sep 16, 2016 | abuse@ |
| └ 83.230.127.24/29 | 8 | SUM | Slaski Uniwersytet Medyczny w Katowicach | ASSIGNED PA | Nov 23, 2018 | abuse@ |
| └ 83.230.127.32/27 | 32 | UCK-CEGLANA | Uniwersyteckie Centrum Kliniczne im. prof. K. Gibinskiego | ASSIGNED PA | Jul 1, 2025 | informatyka@ |
| └ 83.230.127.72/29 | 8 | SASK-INFRA | SASK Infrastructure | ASSIGNED PA | Mar 29, 2017 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.88/29 | 8 | POLSL-CK-HOSTING-EDU | unknown | ASSIGNED PA | Apr 28, 2015 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.96/28 | 16 | POLSL-CI | Polsl CI | ASSIGNED PA | Nov 5, 2019 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.120/29 | 8 | SASK-AEiI-PLAB | Otwarte sfederalizowane laboratorium wspomagajace badania sieciowe dla potrzeb Internetu przyszlosci | ASSIGNED PA | Dec 2, 2020 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.136/29 | 8 | ASP | Akademia Sztuk Pieknych w Katowicach | ASSIGNED PA | Mar 29, 2017 | it@ |
| └ 83.230.127.144/29 | 8 | EDUROAM-SASK-INFRA | eduroam project infrastructure | ASSIGNED PA | Mar 15, 2009 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.152/29 | 8 | UE | Uniwersytet Ekonomiczny w Katowicach | ASSIGNED PA | Oct 10, 2016 | abuse@ |
| └ 83.230.127.160/30 | 4 | ICHPW | Instytut Chemicznej Przeróbki W?gla | ASSIGNED PA | Mar 4, 2009 | abuse@ |
| └ 83.230.127.168/30 | 4 | WSB | Wyzsza Szkola Biznesu w Dabrowie Gorniczej | ASSIGNED PA | Mar 6, 2009 | abuse@ |
| └ 83.230.127.176/30 | 4 | SASK-INFRA | SASK Infrastructure | ASSIGNED PA | Mar 6, 2009 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.184/30 | 4 | POLSL-CI | Polsl CI | ASSIGNED PA | Sep 24, 2019 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.192/29 | 8 | SASK-RIPE-ATLAS-EDU | Ripe Atlas | ASSIGNED PA | Nov 22, 2010 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.200/29 | 8 | SASK-PLATON-U3 | Projekt Platon | ASSIGNED PA | Sep 17, 2010 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.208/30 | 4 | SASK-INFRA | SASK Infrastructure | ASSIGNED PA | Mar 6, 2009 | abuse@ via PL-CKPOLSL-20040521 |
| └ 83.230.127.212/30 | 4 | IETU | Instytut Ekologii Terenow Uprzemyslowionych | ASSIGNED PA | Mar 6, 2009 | abuse@ |
| └ 83.230.127.220/30 | 4 | BIELMAN | Uniwersytet Bielsko-Bialski | ASSIGNED PA | Dec 20, 2023 | abuse@ |
| └ 83.230.127.232/29 | 8 | SASK-INFRA | PirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PL | ASSIGNED PA | Aug 3, 2012 | abuse@ |
| └ 83.230.127.240/29 | 8 | UCK-MEDYKOW | Uniwersyteckie Centrum Kliniczne im. prof. K. Gibi?skiego | ASSIGNED PA | Sep 28, 2020 | informatyka@ |
| └ 83.230.127.248/30 | 4 | GIG | Glowny Instytut Gornictwa | ASSIGNED PA | Mar 6, 2009 | abuse@ |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
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
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2009
- Current origin since
- Jun 2009 · 17 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 83.230.96.0/19 | AS8508 | /19 | RIPE | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8508 | RIPE | PL-CKPOLSL-NET-20040521-EDU | PL-CKPOLSL-MNT | May 27, 2009 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 83.230.123.0/24 | AS8508 | RIPE | PL-CKPOLSL-NET-20040521-EDU | PL-CKPOLSL-MNT | Apr 1, 2019 |
Whois
Registration for this announcement
- Range
- 83.
230. 0. 0/ 17 - Netname
- PL-CKPOLSL-20040521
- Registrant
- Silesian University of Technology, Computer Centre
- Registrant country
- PL
- Organization
- Silesian University of Technology, Computer Centre (ORG-CSUO1-RIPE)
- Org country
- PL
- Type
- ALLOCATED PA
- Created
- May 21, 2004
- Updated
- Jul 26, 2016
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- PL
- Delegated
- May 21, 2004
- Status
- assigned
Report abuse
Abuse contact
- abuse@
silweb. pl - Name
- PL-CKPOLSL Hostmaster Team
- Handle
- SASK1-RIPE