$ query “AS57043” --type=asn → 1 result(s)

AS57043 · HOSTKEY-AS

HOSTKEY B.V.

AS57043 is owned by HOSTKEY B.V. and is a mid-size transit provider, registered in the Netherlands since 2011. The system announces a solid 164 096 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the Netherlands, with additional presence in Germany and Finland, and smaller footprints in 24 additional countries. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇳🇱 Netherlands
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
July 07, 2011
Last Changed
March 04, 2026
Last Seen
October 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
642 / 494
IPv6 Prefixes (raw / aggregated)
7 / 7
IPv4 Addresses
164 096
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇳🇱 Netherlands (71 168 IPs), 🇩🇪 Germany (26 880 IPs), 🇫🇮 Finland (23 552 IPs) and 24 more
Prefix Changed
October 22, 2026

Reputation

Reputation
Good — 55 flagged IPs out of 164 096 total (0.03%)
Open Proxies
5 known open proxies in this network

Connectivity Summary

Upstream Providers
14 upstreams providing transit
Peers
235 networks exchanging traffic without transit
Downstream Customers
22 downstreams buying transit
Unclassified
9 unclassified BGP neighbors
Degree
280 unique BGP neighbors
Reach
30 networks in customer cone

Upstream Providers (14)

Prefix Lists

IPv4 Prefixes (642 total)

  • 5.39.216.0/21 (2 048 addresses (/21 prefix))
  • 46.17.96.0/21 (2 048 addresses (/21 prefix))
  • 146.0.72.0/21 (2 048 addresses (/21 prefix))
  • 31.207.44.0/22 (1 024 addresses (/22 prefix))
  • 43.245.224.0/22 (1 024 addresses (/22 prefix))
  • 45.83.120.0/22 (1 024 addresses (/22 prefix))
  • 66.151.32.0/22 (1 024 addresses (/22 prefix))
  • 66.151.40.0/22 (1 024 addresses (/22 prefix))
  • 66.248.204.0/22 (1 024 addresses (/22 prefix))
  • 82.38.64.0/22 (1 024 addresses (/22 prefix))
  • 89.125.0.0/22 (1 024 addresses (/22 prefix))
  • 147.90.12.0/22 (1 024 addresses (/22 prefix))
  • 152.114.192.0/22 (1 024 addresses (/22 prefix))
  • 176.222.52.0/22 (1 024 addresses (/22 prefix))
  • 185.70.184.0/22 (1 024 addresses (/22 prefix))
  • 185.130.224.0/22 (1 024 addresses (/22 prefix))
  • 185.212.128.0/22 (1 024 addresses (/22 prefix))
  • 185.238.0.0/22 (1 024 addresses (/22 prefix))
  • 186.246.44.0/22 (1 024 addresses (/22 prefix))
  • 191.44.40.0/22 (1 024 addresses (/22 prefix))
  • 202.148.52.0/22 (1 024 addresses (/22 prefix))
  • 212.69.84.0/22 (1 024 addresses (/22 prefix))
  • 212.237.216.0/22 (1 024 addresses (/22 prefix))
  • 2.57.242.0/23 (512 addresses (/23 prefix))
  • 5.180.172.0/23 (512 addresses (/23 prefix))
  • 31.57.44.0/23 (512 addresses (/23 prefix))
  • 45.12.34.0/23 (512 addresses (/23 prefix))
  • 45.155.102.0/23 (512 addresses (/23 prefix))
  • 46.8.186.0/23 (512 addresses (/23 prefix))
  • 62.76.236.0/23 (512 addresses (/23 prefix))
  • 77.83.86.0/23 (512 addresses (/23 prefix))
  • 78.17.56.0/23 (512 addresses (/23 prefix))
  • 78.17.104.0/23 (512 addresses (/23 prefix))
  • 78.17.124.0/23 (512 addresses (/23 prefix))
  • 78.17.130.0/23 (512 addresses (/23 prefix))
  • 80.86.216.0/23 (512 addresses (/23 prefix))
  • 82.23.162.0/23 (512 addresses (/23 prefix))
  • 82.23.248.0/23 (512 addresses (/23 prefix))
  • 82.25.60.0/23 (512 addresses (/23 prefix))
  • 82.26.150.0/23 (512 addresses (/23 prefix))
  • 82.38.70.0/23 (512 addresses (/23 prefix))
  • 82.40.56.0/23 (512 addresses (/23 prefix))
  • 89.125.18.0/23 (512 addresses (/23 prefix))
  • 89.125.60.0/23 (512 addresses (/23 prefix))
  • 89.125.90.0/23 (512 addresses (/23 prefix))
  • 89.125.122.0/23 (512 addresses (/23 prefix))
  • 91.229.104.0/23 (512 addresses (/23 prefix))
  • 103.7.54.0/23 (512 addresses (/23 prefix))
  • 109.66.238.0/23 (512 addresses (/23 prefix))
  • 109.248.16.0/23 (512 addresses (/23 prefix))

IPv6 Prefixes (7 total)

  • 2a11:3500::/29
  • 2a05:b40::/32
  • 2a05:b42::/32
  • 2a05:b41:100::/40
  • 2a0c:b641:330::/44
  • 2a0e:e6c0:8000::/44
  • 2a0f:e7c4:10::/48