Autonomous system
AS21283 A1SI-AS A1 Slovenija
Residential RIPE Cable/DSL/ISP
Summary
A1 Slovenija
residential isp mobile dsl
The AS handle A1SI-AS is held by A1 Slovenija telekomunikacijske storitve, d.d.
What it's used for
- The address space carries residential and mobile access traffic, evidenced by reverse DNS entries such as
cpe-146-212-64-0.dynamic.amis.net,BNG-212-191-254-dsl.simobil.net, andAPN-123-191-254-gprs.simobil.net. - The network announces 325632 IPv4 addresses across 24 prefixes and 2 IPv6 prefixes, while maintaining 49 observed neighbours, a ratio consistent with a large access provider.
Notable
- All registrants for the sampled prefixes are listed as A1 Slovenija telekomunikacijske storitve, d.d., matching the AS holder.
- The address inventory is finely subdivided, with multiple /20 and /21 blocks within the 46.122.0.0/16 range, indicating site-by-site or service-specific segmentation.
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 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Vienna Internet Exchange | Vienna, Austria | 193.203.0.51 |
| Slovenian Internet Exchange | Ljubljana, Slovenia | 91.220.194.112 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 24 prefixes · 326K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SI | Slovenia | 26 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS21283- Registry name
- A1SI-AS
- Registrant
- A1SI-MNT
- Abuse contact
- abuse@a1.si
- Registered
- 2002-09-20
- Last changed
- 2026-06-11
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- A1 Slovenija
- Also known as
- A1 Slovenija
- Network type
- Cable/DSL/ISP
- Scope
- Europe
- Traffic ratio
- Mostly Inbound
- Peering policy
- Selective
- IRR as-set
AS-A1SI- Present at
- 2 exchanges
- Facilities
- 1 facilities
- Website
- http://www.A1.si/
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 · 21 valid, 0 with no ROA
- ROAs
- 20 authorising AS21283
- ASPA
- no ASPA record
- IRR
- 100% registered · 21 of 21 announcements
- Route objects
- 20 naming AS21283
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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