AS51809 BRSK BRSK Limited

BRSK BRSK Limited · registered in the United Kingdom

IPv4 addresses30,97617 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#138largest network in GB by IPv4 space, of 2,074 · 0.05% of GB

Rank worldwide#4,952of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS51809 in ASN lookup Look up an IP in this network (31.98.72.1) All networks in United Kingdom

IPv4 prefixes

All 17 prefixes, in address order.

31.98.72.0/21
31.98.80.0/20
45.41.148.0/22
45.61.104.0/21
45.82.140.0/22
63.135.72.0/21
67.208.52.0/22
88.97.160.0/21
88.97.176.0/20
89.127.224.0/22
104.238.40.0/21
104.238.58.0/23
104.238.62.0/23
185.138.196.0/22
185.232.119.0/24
195.40.32.0/20
195.40.48.0/21

IPv6 prefixes

All 1 prefix.

2a10:d580::/29

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AS199335#141 TALKSTRAIGHT Talk Straight Ltd.30,464

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