AS200950 CalibourNetwork Calibour Limited

CalibourNetwork Calibour Limited · registered in the United Kingdom

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#1,345largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#46,414of 79,396 networks with IPv4

IPv61 x /32 (66,370 x /48)26 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS200950 in ASN lookup Look up an IP in this network (45.86.153.1) All networks in United Kingdom

IPv4 prefixes

All 2 prefixes, in address order.

45.86.153.0/24
150.251.32.0/24

IPv6 prefixes

All 26 prefixes.

2602:f2dc:9e::/48
2a0d:d906::/36
2a0d:d906:1000::/43
2a0d:d906:1020::/48
2a0d:d906:1021::/48
2a0d:d906:1022::/47
2a0d:d906:1024::/46
2a0d:d906:1028::/45
2a0d:d906:1030::/44
2a0d:d906:1040::/42
2a0d:d906:1080::/41
2a0d:d906:1100::/40
2a0d:d906:1200::/39
2a0d:d906:1400::/38
2a0d:d906:1800::/37
2a0d:d906:2000::/35
2a0d:d906:4000::/34
2a0d:d906:8000::/33
2a0f:6284:f00::/40
2a0f:6284:1200::/40
2a0f:85c1:8d0::/44
2a10:ccc0:100::/44
2a14:67c3:2ae::/48
2a14:7583:ffe0::/44
2a14:c380:360::/44
2a14:c380:700::/40

Similar-sized networks in United Kingdom

ASNNameIPv4 addresses

AS205479#1342 LGB-AS Luke Eiji Granger-Brown512

AS201301#1343 soundmouse-netwise Soundmouse Ltd512

AS215320#1344 AlncomAS2 ALNWICK COMPUTERWARE LTD.512

AS202297#1346 SKYLON Skylon Solutions Limited512

AS208915#1347 HyperLink HYPERLXC MEDICAL LTD512

AS59410#1348 BARRITEC Barritel Ltd512

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