AS31463 FourD-AS Redcentric Solutions Ltd

FourD-AS Redcentric Solutions Ltd · registered in the United Kingdom

IPv4 addresses34,30438 prefixes · 0.001% of announced IPv4

Rank in United Kingdom#122largest network in GB by IPv4 space, of 2,074 · 0.05% of GB

Rank worldwide#4,630of 79,396 networks with IPv4

IPv616 x /32 (1,048,832 x /48)20 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS31463 in ASN lookup Look up an IP in this network (37.209.208.1) All networks in United Kingdom

IPv4 prefixes

All 38 prefixes, in address order.

37.209.208.0/20
45.140.136.0/22
45.140.252.0/22
46.245.248.0/21
79.99.64.0/21
79.174.28.0/22
87.76.18.0/23
87.76.20.0/24
87.76.22.0/23
87.76.24.0/24
87.76.27.0/24
87.76.28.0/22
91.199.252.0/24
91.220.24.0/24
93.177.127.0/24
94.228.32.0/22
94.228.36.0/23
94.228.38.0/24
94.228.39.0/24
94.228.40.0/21
109.71.78.0/24
109.74.20.0/22
165.84.208.0/23
165.84.216.0/21
173.249.153.0/24
173.249.154.0/23
178.17.32.0/22
178.17.36.0/24
178.17.37.0/24
178.17.38.0/23
178.17.40.0/21
178.251.32.0/21
185.4.128.0/22
185.34.208.0/22
185.160.164.0/22
185.167.216.0/24
185.167.228.0/22
195.226.201.0/24

IPv6 prefixes

All 20 prefixes.

2a00:1c18::/39
2a00:1c18:200::/40
2a00:1c18:300::/43
2a00:1c18:320::/44
2a00:1c18:330::/46
2a00:1c18:334::/46
2a00:1c18:338::/45
2a00:1c18:340::/42
2a00:1c18:380::/41
2a00:1c18:400::/38
2a00:1c18:800::/37
2a00:1c18:1000::/36
2a00:1c18:2000::/35
2a00:1c18:4000::/34
2a00:1c18:8000::/33
2a00:1c19::/32
2a00:1c1a::/31
2a00:1c1c::/30
2a07:45c2::/40
2a0f:64c0::/29

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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