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AS20860
AS20860 IOMART-AS IOMART CLOUD SERVICES LIMITED
IOMART-AS IOMART CLOUD SERVICES LIMITED · registered in the United Kingdom
IPv4 addresses 379,136 249 prefixes · 0.012% of announced IPv4
Rank in United Kingdom #20 largest network in GB by IPv4 space, of 2,074 · 0.56% of GB
Rank worldwide #690 of 79,396 networks with IPv4
IPv6 17 x /32 (1,114,689 x /48) 17 prefixes
IPv6 prefixes
All 17 prefixes.
2001:1b40::/32 2a00:5d80::/32 2a01:61c0::/40 2a02:8c8::/32 2a02:b10:1::/48 2a02:2658::/35 2a02:2658:2000::/36 2a02:2658:3000::/36 2a02:2658:4000::/34 2a02:2658:8000::/33 2a02:7f40::/32 2a03:b200::/29 2a03:ca80::/31 2a04:de40::/42 2a0b:4580::/32 2a0c:4380::/40 2a12:2201::/32
Similar-sized networks in United Kingdom
ASN Name IPv4 addresses
AS42689 #17 Glide Glide Student & Residential Limited499,200
AS8851 #18 EDGE GCI Network Solutions Limited417,792
AS15395 #19 RACKSPACE-LON Rackspace Ltd.402,176
AS8468 #21 ENTANET Cityfibre Limited358,400
AS62240 #22 Clouvider Clouvider Limited339,968
AS25180 #23 EXPONENTIAL-E-AS Exponential-E Ltd.291,328
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