AS51809

Name: AS51809 — BRSK Limited
Creator: ipdex

BRSK Limited ISP registered in United Kingdom

38IPv4 prefixes

1IPv6 prefixes

82%RPKI-valid

#9,672AS Rank

326/326RIS visibility

#95Rank in United Kingdom

2021-01-15Allocated

BRSK Limited (AS51809) — ISP, registered in United Kingdom. announces 38 IPv4 prefixes + 1 IPv6 prefixes. Rank in United Kingdom: #95. Allocated: 2021-01-15.

IPv4 38IPv6 1

Announced prefixes · 39

v4 104.238.40.0/21 unknown
v4 104.238.58.0/23 unknown
v4 104.238.62.0/23 unknown
v4 185.138.196.0/22 valid
v4 185.232.119.0/24 valid
v4 195.40.32.0/24 valid
v4 195.40.33.0/24 valid
v4 195.40.34.0/24 valid
v4 195.40.35.0/24 valid
v4 195.40.36.0/24 valid
v4 195.40.37.0/24 valid
v4 195.40.38.0/24 valid
v4 195.40.39.0/24 valid
v4 195.40.40.0/24 valid
v4 195.40.41.0/24 valid
v4 195.40.42.0/24 valid
v4 195.40.43.0/24 valid
v4 195.40.44.0/24 valid
v4 195.40.45.0/24 valid
v4 195.40.46.0/24 valid
v4 195.40.47.0/24 valid
v4 195.40.48.0/24 valid
v4 195.40.49.0/24 valid
v4 195.40.50.0/24 valid
v4 195.40.51.0/24 valid
v4 195.40.52.0/24 valid
v4 195.40.53.0/24 valid
v4 195.40.54.0/24 valid
v4 195.40.55.0/24 valid
v4 31.98.72.0/21 unknown
v4 31.98.80.0/20 unknown
v4 45.41.148.0/22 unknown
v4 45.61.104.0/21 unknown
v4 45.82.140.0/22 valid
v4 63.135.72.0/21 valid
v4 67.208.52.0/22 valid
v4 88.97.160.0/21 valid
v4 88.97.176.0/20 valid
v6 2a10:d580::/29 valid

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 38 IPv4 · 1 IPv6 announced · RIS visibility 326/326 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	39
2026-06-13	39

Facilities · 1

1 Facilities · 1 Countries

Telehouse - London (Docklands North) London

AS topology · Customer cone 2

Providers · 1

AS212655 YouFibre Limited

Customers · 1

AS216405 Metric Systems UK LTD

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