Autonomous system
AS12971 BIOS-AT Fasangartengasse 1
Unclassified RIPE
Summary
Viennaweb Service
hosting isp business
The sixth AS handle in this range with a street address in it.
What it's used for
- An Austrian internet and web hosting provider. 8,192 addresses in one IPv4 prefix, two observed BGP neighbours, and no IPv6 announced.
Notable
- The whole inventory is
195.110.192.0/19, announced as a single block. - Its netname is
AT-VIENNAWEB-970424, using the two-digit year form for 1997. - The AS handle is
BIOS-AT Fasangartengasse 1. - One of three sampled addresses returned a name:
nat255.wrk.at.
Interesting
- Six handles in this range now carry postal addresses. The pattern is consistent enough to be a misunderstanding of the field rather than a series of individual mistakes, and it always originates the same way: a form asked for details of the organisation and somebody answered fully.
- The handle also begins
BIOS, matching neither the company name nor the domain in its reverse DNS. Three identities in a record with one block in it. nat255.wrk.atnames a network address translation gateway on a fourth domain. A /19 fronted by NAT devices means the public addresses are shared rather than assigned, and 8,192 addresses can serve far more customers than that number suggests.- The 1997 netname uses two digits for the year while other records in this range from the same period use four. Both forms ran side by side for over a decade, so the format reflects who filed the request rather than when.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 1 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS20751 | AZISTA GmbH | 354 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-25, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 7.17K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AT | Austria | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12971- Registry name
- BIOS-AT
- Registrant
- BIOSNET-MNT
- Abuse contact
- office@viennaweb.at
- Registered
- 2002-04-09
- Last changed
- 2024-04-30
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Internet Viennaweb Service
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 6 valid, 0 with no ROA
- ROAs
- 6 authorising AS12971
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 6 naming AS12971
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 443 networks and 1,779 prefixes, as published 2026-10-24. 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