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AS197545
AS197545 Era4-ASN Era4 Limited
Era4-ASN Era4 Limited · registered in the United Kingdom
IPv4 addresses 16,384 1 prefixes · <0.001% of announced IPv4
Rank in United Kingdom #209 largest network in GB by IPv4 space, of 2,074 · 0.02% of GB
Rank worldwide #6,940 of 79,396 networks with IPv4
IPv6 1 x /32 (65,536 x /48) 1 prefixes
IPv4 prefixes
All 1 prefix, in address order.
IPv6 prefixes
All 1 prefix.
Similar-sized networks in United Kingdom
ASN Name IPv4 addresses
AS13205 #206 British Telecommunications Limited16,896
AS5564 #207 SOL-AS Brightsolid Online Technology Ltd16,384
AS13126 #208 SMS-NET Satellite Mediaport Services Ltd.16,384
AS15654 #210 COMINO Civica UK Ltd.16,384
AS16334 #211 Sureline-Communications-UK Sureline Communications Limited16,384
AS33820 #212 REED-ELSEVIER-AS RELX GROUP PLC16,384
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