Autonomous system
AS5578 AS-BENESTRA Bratislava, Slovak Republic
Unclassified ARIN NSP
Summary
SWAN, a.s. (formerly Benestra)
isp enterprise legacy
AS-BENESTRA is held by SWAN, a.s. of Bratislava, Slovakia's largest domestically owned alternative telecoms operator. Benestra merged into SWAN in the late 2010s, and SWAN later absorbed the mobile operator 4ka.
What it's used for
- Fixed connectivity, data services and internet access, historically weighted toward corporate and public-sector customers, which is the segment Benestra was built around and which SWAN still serves under its own brand.
- Consumer fixed and mobile services sit under the 4ka brand within the same group, so the AS carries a mix rather than a purely business estate.
Notable
- The Benestra name survived a long chain of ownership changes in the Slovak alternative-operator market before landing at SWAN; the AS handle is the last visible trace of it.
- With a few hundred thousand addresses, this is one of the larger non-incumbent networks in Slovakia.
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 5 exchanges in 4 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.193.195 |
| Peering.cz | Prague, Czech Republic | 185.0.20.74 |
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.16.29 |
| Vienna Internet Exchange | Vienna, Austria | 193.203.0.206 |
| Slovak Internet eXchange Bratislava | Bratislava, Slovakia | 192.108.148.100 |
Transit providers
24 upstream, 54 downstream and 108 adjacent networks observed; most-used upstreams first.
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 137 prefixes · 314K addresses IPv6 20 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SK | Slovakia | 157 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5578- Registry name
- AS-BENESTRA
- Registrant
- SWAN, a.s.
- Abuse contact
- ripe-abuse@swan.sk
- Registered
- 2002-06-18
- Last changed
- 2024-12-19
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- SWAN / exBENESTRA
- Also known as
- Swan
- Network type
- NSP
- Scope
- Regional
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS-SWAN- Present at
- 5 exchanges
- Facilities
- 5 facilities
- Website
- https://www.swan.sk/
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
- 91% valid · 53 valid, 5 with no ROA
- ROAs
- 55 authorising AS5578
- ASPA
- no ASPA record
- IRR
- 100% registered · 58 of 58 announcements
- Route objects
- 64 naming AS5578
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: 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