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

AS5578 · AS-BENESTRA

SWAN a.s.

AS5578 is operated by SWAN a.s. and serves as a major transit provider, established in Slovakia in 2002. The system announces a solid 323 072 IPv4 addresses, including a /16, and supports IPv6. Most of its address space is geolocated to Slovakia, with additional presence in Suriname.

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

Basic Information

Country
🇸🇰 Slovakia
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
June 18, 2002
Last Changed
March 04, 2026
Last Seen
April 28, 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 — 6 flagged IPs out of 323 072 total (0.00%)

Connectivity Summary

Upstream Providers
2 upstreams providing transit
Peers
109 networks exchanging traffic without transit
Downstream Customers
55 downstreams buying transit
Unclassified
2 unclassified BGP neighbors
Degree
168 unique BGP neighbors
Reach
151 networks in customer cone

Upstream Providers (2)

  • AS174 — COGENT-174 (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