AS29457 OPTIONS-AS Options Technology Ltd

OPTIONS-AS Options Technology Ltd · registered in the United Kingdom

IPv4 addresses12,54420 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#254largest network in GB by IPv4 space, of 2,074 · 0.02% of GB

Rank worldwide#8,034of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)15 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS29457 in ASN lookup Look up an IP in this network (45.144.236.1) All networks in United Kingdom

IPv4 prefixes

All 20 prefixes, in address order.

45.144.236.0/23
46.18.80.0/23
46.18.82.0/24
46.18.85.0/24
46.18.86.0/23
82.150.96.0/21
82.150.104.0/22
82.150.120.0/24
82.150.123.0/24
82.150.127.0/24
168.222.208.0/23
168.222.212.0/22
176.106.114.0/23
176.106.117.0/24
185.28.32.0/23
185.28.34.0/24
185.28.35.0/24
195.167.240.0/21
195.167.248.0/22
195.167.252.0/24

IPv6 prefixes

All 15 prefixes.

2604:9e40::/46
2604:9e40:4::/46
2604:9e40:8::/45
2604:9e40:10::/44
2604:9e40:20::/43
2604:9e40:40::/42
2604:9e40:80::/41
2604:9e40:100::/40
2604:9e40:200::/39
2604:9e40:400::/38
2604:9e40:800::/37
2604:9e40:1000::/36
2604:9e40:2000::/35
2604:9e40:4000::/34
2604:9e40:8000::/33

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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