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AS200740 FIRST-SERVER-EU-AS FIRST SERVER LIMITED

FIRST-SERVER-EU-AS FIRST SERVER LIMITED · registered in the United Kingdom

IPv4 addresses27,90446 prefixes · <0.001% of announced IPv4
Rank in United Kingdom#147largest network in GB by IPv4 space, of 2,074 · 0.04% of GB
Rank worldwide#5,180of 79,396 networks with IPv4
IPv619 x /4814 prefixes
CountryUnited Kingdom2,261 ASNs registered there
Open AS200740 in ASN lookup Look up an IP in this network (45.43.88.1) All networks in United Kingdom

IPv4 prefixes

All 46 prefixes, in address order.

  • 45.43.88.0/22
  • 45.134.12.0/22
  • 46.8.120.0/23
  • 46.8.126.0/23
  • 46.8.182.0/23
  • 80.76.32.0/22
  • 83.147.232.0/22
  • 83.147.240.0/23
  • 87.239.250.0/23
  • 89.44.84.0/23
  • 91.103.252.0/23
  • 91.186.202.0/23
  • 91.186.214.0/23
  • 92.118.8.0/23
  • 94.142.136.0/23
  • 95.81.77.0/24
  • 95.81.94.0/23
  • 95.81.112.0/24
  • 95.214.10.0/23
  • 103.85.112.0/23
  • 103.249.132.0/22
  • 104.128.138.0/23
  • 104.128.142.0/23
  • 109.69.56.0/22
  • 157.228.130.0/23
  • 157.228.132.0/23
  • 157.228.148.0/22
  • 157.228.154.0/23
  • 157.228.160.0/22
  • 157.228.166.0/23
  • 157.228.180.0/23
  • 159.255.34.0/23
  • 159.255.36.0/22
  • 178.253.52.0/23
  • 185.94.164.0/23
  • 185.103.252.0/22
  • 185.114.72.0/23
  • 185.117.119.0/24
  • 185.174.136.0/23
  • 185.232.170.0/23
  • 185.233.80.0/23
  • 185.233.202.0/23
  • 193.124.188.0/23
  • 193.239.160.0/23
  • 193.239.166.0/23
  • 194.36.178.0/23

IPv6 prefixes

All 14 prefixes.

  • 2a04:5201:4::/48
  • 2a04:5201:6::/47
  • 2a04:5201:9::/48
  • 2a04:5201:10::/48
  • 2a04:5201:8018::/48
  • 2a04:5202::/48
  • 2a0c:5d00:3002::/48
  • 2a0c:5d00:3004::/47
  • 2a0c:5d00:3007::/48
  • 2a0c:5d00:3008::/48
  • 2a0c:5d00:3010::/48
  • 2a0c:5d00:ff08::/46
  • 2a0c:5d00:ff0c::/48
  • 2a0e:d604:2::/48

Similar-sized networks in United Kingdom

ASNNameIPv4 addresses
AS213877#144 U1DS-AS U1 DIGITAL SERVICES LTD28,672
AS42081#145 ecmwf-it European Centre for Medium-Range Weather Forecasts (ECMWF)28,416
AS41811#146 CONVERGENCE-GROUP CONVERGENCE (GROUP NETWORKS) LIMITED27,904
AS209641#148 I-SERVERS-EAST IHOR HOSTING LTD27,392
AS206347#149 RANSTON-AS-1 Wessex Internet Limited26,880
AS25098#150 NETCALIBRE Netcalibre Ltd25,856

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources