Registered organisation
NHS England
Address space registered to NHS England, 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 ARIN and LACNIC do not publish theirs, so holders in North and South America are largely missing here.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
858,112
IPv6 /64s
4,294,967,297
Registered blocks
13
Countries
1
What this tells you
- Holds 858,112 IPv4 addresses and 4,294,967,297 IPv6 /64 networks across 13 registered blocks.
- Almost none of this space is announced to the internet: 2% 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 14 networks, the largest being AS210450 BARTS HEALTH NHS TRUST at 0.3% of the IPv4 space.
- All of the space we can place resolves to United Kingdom.
Networks announcing this space
| Network | IPv4 share | |
|---|---|---|
| AS210450 BARTS HEALTH NHS TRUST | 0.3% | |
| AS25180 Exponential-E Ltd. | 0.3% | |
| AS5089 Virgin Media Limited | 0.2% | |
| AS8075 Microsoft Corporation | 0.2% | |
| AS2856 British Telecommunications | 0.2% | |
| AS43519 Nominet UK | 0.2% | |
| Everything else, including space not announced (8 more) | 99% |
Countries this space resolves to
| Country | IPv4 share | IPv6 share | |
|---|---|---|---|
| United Kingdom | 100% | 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.