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

AS57043 · HOSTKEY-AS

HOSTKEY B.V.

AS57043 belongs to HOSTKEY B.V. and is a mid-size transit provider, registered in the Netherlands since 2011. The system announces a solid 152 576 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in the Netherlands, with additional presence in Germany and Finland, and smaller footprints in 25 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
July 26, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
595 / 448
IPv6 Prefixes (raw / aggregated)
7 / 7
IPv4 Addresses
152 576
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇳🇱 Netherlands (127 232 IPs), 🇩🇪 Germany (47 360 IPs), 🇫🇮 Finland (43 264 IPs) and 25 more
Prefix Changed
July 22, 2026

Reputation

Reputation
Good — 25 flagged IPs out of 152 576 total (0.02%)
Open Proxies
6 known open proxies in this network

Connectivity Summary

Upstream Providers
15 upstreams providing transit
Peers
266 networks exchanging traffic without transit
Downstream Customers
19 downstreams buying transit
Unclassified
10 unclassified BGP neighbors
Degree
310 unique BGP neighbors
Reach
24 networks in customer cone

Upstream Providers (15)

Prefix Lists

IPv4 Prefixes (595 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))
  • 185.70.184.0/22 (1 024 addresses (/22 prefix))
  • 212.69.84.0/22 (1 024 addresses (/22 prefix))
  • 202.148.52.0/22 (1 024 addresses (/22 prefix))
  • 82.38.64.0/22 (1 024 addresses (/22 prefix))
  • 147.90.12.0/22 (1 024 addresses (/22 prefix))
  • 151.245.216.0/22 (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))
  • 191.44.40.0/22 (1 024 addresses (/22 prefix))
  • 43.245.224.0/22 (1 024 addresses (/22 prefix))
  • 89.125.0.0/22 (1 024 addresses (/22 prefix))
  • 66.248.204.0/22 (1 024 addresses (/22 prefix))
  • 66.151.40.0/22 (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))
  • 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))
  • 212.237.216.0/22 (1 024 addresses (/22 prefix))
  • 194.147.214.0/23 (512 addresses (/23 prefix))
  • 151.243.224.0/23 (512 addresses (/23 prefix))
  • 193.84.2.0/23 (512 addresses (/23 prefix))
  • 194.58.154.0/23 (512 addresses (/23 prefix))
  • 45.155.102.0/23 (512 addresses (/23 prefix))
  • 189.74.120.0/23 (512 addresses (/23 prefix))
  • 188.220.224.0/23 (512 addresses (/23 prefix))
  • 188.130.226.0/23 (512 addresses (/23 prefix))
  • 46.8.186.0/23 (512 addresses (/23 prefix))
  • 194.87.54.0/23 (512 addresses (/23 prefix))
  • 82.23.162.0/23 (512 addresses (/23 prefix))
  • 185.244.48.0/23 (512 addresses (/23 prefix))
  • 194.164.216.0/23 (512 addresses (/23 prefix))
  • 62.76.236.0/23 (512 addresses (/23 prefix))
  • 185.217.138.0/23 (512 addresses (/23 prefix))
  • 194.164.234.0/23 (512 addresses (/23 prefix))
  • 194.180.188.0/23 (512 addresses (/23 prefix))
  • 194.180.206.0/23 (512 addresses (/23 prefix))
  • 194.247.182.0/23 (512 addresses (/23 prefix))
  • 194.247.186.0/23 (512 addresses (/23 prefix))
  • 45.12.34.0/23 (512 addresses (/23 prefix))
  • 195.26.230.0/23 (512 addresses (/23 prefix))
  • 167.17.176.0/23 (512 addresses (/23 prefix))
  • 156.67.62.0/23 (512 addresses (/23 prefix))
  • 154.86.2.0/23 (512 addresses (/23 prefix))
  • 77.83.86.0/23 (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