Autonomous system
AS8508 SILWEB-AS-EDU SILWEB Autonomous System - Academic
Education RIPE
Summary
SILWEB (Silesian University of Technology)
education university research legacy
SILWEB-AS-EDU is run by the Computer Centre of the Silesian University of Technology in Gliwice, which operates SILWEB — the academic metropolitan network serving the Upper Silesian conurbation. It is one of the regional MANs that connect into Poland's national research network, AS8501.
What it's used for
- Campus and inter-campus connectivity for the universities and cultural institutions of the Katowice–Gliwice agglomeration.
- About 160,000 addresses across fifteen prefixes, including two legacy /16s (
155.158.0.0/16and157.158.0.0/16), plus three IPv6 /32s.
Notable
- rDNS is a roll-call of Silesian institutions rather than a single university:
us.edu.pl(University of Silesia),ue.katowice.pl(University of Economics in Katowice),ath.bielsko.pl(University of Bielsko-Biała, behind NAT pools),asp.katowice.pl(Academy of Fine Arts) andbs.katowice.pl(the Silesian Library). That mix is the signature of an academic MAN operator, not of one campus. - The addresses are institutional: servers, NAT gateways and campus hosts. There are no consumer subscriber pools, so despite the size this is not an eyeball network.
Interesting
- The two /16s are early-1990s allocations from
155/8and157/8, blocks widely handed to universities before RIR-era CIDR assignments — a hint of how early Polish academia got onto the internet.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| TPIX - Internet Exchange | Warsaw, Poland | 195.149.233.97 |
| Thinx IX | Warsaw, Poland | 212.91.0.207 |
Transit providers
8 upstream, 0 downstream and 14 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS8501 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | 745 |
| AS6939 | Hurricane Electric LLC | 159 |
| AS15744 | Silesian University of Technology, Computer Centre | 69 |
| AS3303 | Swisscom (Schweiz) AG | 33 |
| AS24482 | SG.GS | 18 |
| AS33891 | Core-Backbone GmbH | 15 |
| AS196844 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | 8 |
| AS201054 | Stowarzyszenie e-Poludnie | 3 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 15 prefixes · 160K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 17 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS8508- Registry name
- SILWEB-AS-EDU
- Registrant
- Silesian University of Technology, Computer Centre
- Abuse contact
- abuse@silweb.pl
- Registered
- 1970-01-01
- Last changed
- 2019-12-04
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 18 valid, 0 with no ROA
- ROAs
- 23 authorising AS8508
- ASPA
- no ASPA record
- IRR
- 100% registered · 18 of 18 announcements
- Route objects
- 24 naming AS8508
Reputation
Classification and threat
Education University, school or national research and education network.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere