$ query “AS5578” --type=asn → 1 result(s)

AS5578 · AS-BENESTRA

SWAN a.s.

AS5578 is run by SWAN a.s. and is a mid-size transit provider, registered in Slovakia since 2002. The system announces a solid 323 072 IPv4 addresses, including a /16, and supports IPv6. Its primary geographic footprint is in Slovakia, with additional presence in Suriname.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #3 in Slovakia — Top 10 by reach within country

Basic Information

Country
🇸🇰 Slovakia
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
June 18, 2002
Last Changed
June 01, 2026
Last Seen
June 22, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
54 / 36
IPv6 Prefixes (raw / aggregated)
5 / 5
IPv4 Addresses
323 072
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇸🇰 Slovakia (644 096 IPs), 🇸🇷 Suriname (96 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 7 flagged IPs out of 323 072 total (0.00%)

Connectivity Summary

Upstream Providers
2 upstreams providing transit
Peers
42 networks exchanging traffic without transit
Downstream Customers
53 downstreams buying transit
Unclassified
15 unclassified BGP neighbors
Degree
112 unique BGP neighbors
Reach
75 networks in customer cone

Upstream Providers (2)

  • AS174 — COGENT (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (54 total)

  • 195.168.0.0/16 (65 536 addresses (/16 prefix))
  • 85.248.0.0/16 (65 536 addresses (/16 prefix))
  • 83.168.128.0/18 (16 384 addresses (/18 prefix))
  • 62.168.64.0/18 (16 384 addresses (/18 prefix))
  • 62.197.192.0/18 (16 384 addresses (/18 prefix))
  • 213.215.64.0/18 (16 384 addresses (/18 prefix))
  • 84.245.64.0/18 (16 384 addresses (/18 prefix))
  • 62.152.224.0/19 (8 192 addresses (/19 prefix))
  • 212.26.160.0/19 (8 192 addresses (/19 prefix))
  • 217.75.64.0/19 (8 192 addresses (/19 prefix))
  • 212.81.0.0/19 (8 192 addresses (/19 prefix))
  • 62.65.160.0/19 (8 192 addresses (/19 prefix))
  • 195.98.0.0/19 (8 192 addresses (/19 prefix))
  • 195.72.0.0/19 (8 192 addresses (/19 prefix))
  • 195.46.64.0/19 (8 192 addresses (/19 prefix))
  • 195.12.128.0/19 (8 192 addresses (/19 prefix))
  • 217.172.144.0/20 (4 096 addresses (/20 prefix))
  • 217.118.96.0/20 (4 096 addresses (/20 prefix))
  • 81.88.128.0/20 (4 096 addresses (/20 prefix))
  • 217.67.16.0/20 (4 096 addresses (/20 prefix))
  • 80.250.240.0/20 (4 096 addresses (/20 prefix))
  • 82.119.224.0/20 (4 096 addresses (/20 prefix))
  • 194.1.224.0/21 (2 048 addresses (/21 prefix))
  • 94.124.144.0/21 (2 048 addresses (/21 prefix))
  • 194.1.172.0/22 (1 024 addresses (/22 prefix))
  • 193.58.192.0/22 (1 024 addresses (/22 prefix))
  • 185.220.120.0/22 (1 024 addresses (/22 prefix))
  • 185.130.220.0/22 (1 024 addresses (/22 prefix))
  • 193.58.196.0/23 (512 addresses (/23 prefix))
  • 185.161.174.0/23 (512 addresses (/23 prefix))
  • 195.62.16.0/23 (512 addresses (/23 prefix))
  • 193.110.186.0/23 (512 addresses (/23 prefix))
  • 195.245.78.0/23 (512 addresses (/23 prefix))
  • 193.108.132.0/23 (512 addresses (/23 prefix))
  • 195.98.134.0/24 (256 addresses (/24 prefix))
  • 194.156.69.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (5 total)

  • 2a06:dbc0::/29
  • 2001:1ba0::/32
  • 2a00:1298::/32
  • 2a02:770::/32
  • 2a07:c387::/32