Longest Match / Organisations

Registered organisation

UK Ministry of Defence

Address space registered to UK Ministry of Defence, and where it is announced from.

Registered holders come from the bulk whois that RIPE, APNIC and AFRINIC publish. ARIN and LACNIC do not publish theirs, so holders in North and South America are largely missing here.

IPv4 addresses
16,785,408
IPv6 /64s
35,184,372,088,833
Registered blocks
4
Countries
1

What this tells you

  • Holds 16,785,408 IPv4 addresses and 35,184,372,088,833 IPv6 /64 networks across 4 registered blocks.
  • Almost none of this space is announced to the internet: <0.1% of its IPv4 space appears in the routing table. Space can be held for decades without being used, and a legacy allocation this size is usually one of those.
  • Announced by 2 networks, the largest being AS2856 British Telecommunications at <0.1% of the IPv4 space.
  • All of the space we can place resolves to United Kingdom.

Networks announcing this space

NetworkIPv4 shareIPv6 share
AS2856 British Telecommunications<0.1%-
AS209242 Cloudflare BYOIP Customers<0.1%<0.1%
Not announced to the internet100%100%

Countries this space resolves to

CountryIPv4 shareIPv6 share
United Kingdom100%100%

Holding a block is a registry fact, not a physical one. The organisation named here is who the block is assigned to, which is often a customer of the network operator announcing it.