Autonomous system
AS12635 AS12635 Vienna
Unclassified RIPE Cable/DSL/ISP
Summary
Hutchison Drei Austria
telecom mobile isp
A national mobile operator's AS number carrying IPv6 and nothing else.
What it's used for
- Mobile network connectivity in Austria. Two IPv6 prefixes announced, and no IPv4 whatsoever — zero addresses, zero prefixes.
Notable
- The announcements are
2001:4b69::/32and2001:4b6c::/30. - A
/30is four times the standard/32allocation. - The registry lookup for the blocks failed rather than returning nothing, so the netnames and allocation dates are unknown here.
- No addresses were sampled for reverse DNS, because there are no IPv4 addresses to sample.
Interesting
- An AS with no IPv4 at all is rare enough to be worth stopping over. An operator this size plainly uses IPv4 somewhere; none of it is announced under this number, which means the company splits its routing across more than one autonomous system and this one was given the IPv6 job.
- Mobile networks were the first place IPv6 became ordinary rather than experimental. A phone network hands out an address to every device that switches on, the device count went past what IPv4 could cover years ago, and carrier-grade translation was the alternative. Several large mobile operators now run IPv6 to the handset and translate only what still needs it.
- The
/30is the interesting half of the allocation. Four standard allocations' worth of space is what a registry gives an operator that expects to number a whole country's devices, and it costs the same as one, because that is the point of IPv6.
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, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS25255 | Hutchison Drei Austria GmbH | 76 |
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 0 prefixes · 0 addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AT | Austria | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12635- Registry name
- AS12635
- Registrant
- AS12635-MNT
- Abuse contact
- abuse@drei.com
- Registered
- 1970-01-01
- Last changed
- 2025-05-02
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- ONE GmbH
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS-ONE- Facilities
- 2 facilities
- Website
- http://www.one.at
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 · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS12635
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 31 naming AS12635
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: 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