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

AS57043 · HOSTKEY-AS

HOSTKEY B.V.

AS57043 is operated by HOSTKEY B.V. and serves as a mid-size transit provider, established in the Netherlands in 2011. The system announces a solid 146 432 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 23 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
August 10, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
573 / 436
IPv6 Prefixes (raw / aggregated)
7 / 7
IPv4 Addresses
146 432
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇳🇱 Netherlands (118 528 IPs), 🇩🇪 Germany (47 360 IPs), 🇫🇮 Finland (43 520 IPs) and 23 more
Prefix Changed
August 08, 2026

Reputation

Reputation
Good — 64 flagged IPs out of 146 432 total (0.04%)
Open Proxies
4 known open proxies in this network

Connectivity Summary

Upstream Providers
17 upstreams providing transit
Peers
266 networks exchanging traffic without transit
Downstream Customers
21 downstreams buying transit
Unclassified
4 unclassified BGP neighbors
Degree
308 unique BGP neighbors
Reach
28 networks in customer cone

Upstream Providers (17)

Prefix Lists

IPv4 Prefixes (573 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))
  • 152.114.192.0/22 (1 024 addresses (/22 prefix))
  • 31.207.44.0/22 (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))
  • 191.44.40.0/22 (1 024 addresses (/22 prefix))
  • 66.248.204.0/22 (1 024 addresses (/22 prefix))
  • 89.125.0.0/22 (1 024 addresses (/22 prefix))
  • 43.245.224.0/22 (1 024 addresses (/22 prefix))
  • 66.151.40.0/22 (1 024 addresses (/22 prefix))
  • 66.151.32.0/22 (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))
  • 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))
  • 151.243.190.0/23 (512 addresses (/23 prefix))
  • 193.109.68.0/23 (512 addresses (/23 prefix))
  • 193.84.2.0/23 (512 addresses (/23 prefix))
  • 45.155.102.0/23 (512 addresses (/23 prefix))
  • 194.87.54.0/23 (512 addresses (/23 prefix))
  • 189.74.120.0/23 (512 addresses (/23 prefix))
  • 188.220.224.0/23 (512 addresses (/23 prefix))
  • 46.8.186.0/23 (512 addresses (/23 prefix))
  • 82.23.162.0/23 (512 addresses (/23 prefix))
  • 188.130.226.0/23 (512 addresses (/23 prefix))
  • 194.164.216.0/23 (512 addresses (/23 prefix))
  • 185.244.48.0/23 (512 addresses (/23 prefix))
  • 62.76.236.0/23 (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))
  • 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))
  • 31.57.44.0/23 (512 addresses (/23 prefix))
  • 151.247.208.0/23 (512 addresses (/23 prefix))
  • 151.247.196.0/23 (512 addresses (/23 prefix))
  • 77.83.86.0/23 (512 addresses (/23 prefix))
  • 195.162.68.0/23 (512 addresses (/23 prefix))
  • 151.245.136.0/23 (512 addresses (/23 prefix))
  • 151.243.224.0/23 (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