Autonomous system
AS34785 STW-AS
Residential RIPE
Summary
Stadtwerke Klagenfurt
utility regional isp business
STW-AS is operated by Stadtwerke Klagenfurt AG, a municipal utility and regional internet service provider in Austria.
What it's used for
- The address space carries infrastructure for a local utility and its associated services, with netnames referencing
CITYWEB-SECURED,RAIFFEISEN-STW-NET, and monitoring tools likeSMOKEPING. - The AS announces 11,008 IPv4 addresses across 9 prefixes and 1 IPv6 prefix, while maintaining only 2 observed neighbours, a ratio that indicates a small, self-contained access or internal corporate network rather than a transit provider.
Notable
- All RDAP registrants consistently identify
Stadtwerke Klagenfurt AGorSTW NOC, aligning perfectly with the AS holder. - The inventory consists of a mix of older blocks dating back to 1993 and 1995, alongside more recent allocations, reflecting the long-standing operational history of the municipal entity.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Alpes Adria Internet Exchange | Klagenfurt, Austria | 193.37.144.2 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 9 prefixes · 11.01K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AT | Austria | 10 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS34785- Registry name
- STW
- Registrant
- Stadtwerke Klagenfurt AG
- Abuse contact
- abuse@stw-net.at
- Registered
- 2005-04-05
- Last changed
- 2026-02-20
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 10 valid, 0 with no ROA
- ROAs
- 11 authorising AS34785
- ASPA
- no ASPA record
- IRR
- 100% registered · 10 of 10 announcements
- Route objects
- 10 naming AS34785
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 442 networks and 1,781 prefixes, as published 2026-10-16. 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