Registered organisation
Erasmus Universiteit Rotterdam
Address space registered to Erasmus Universiteit Rotterdam, 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 ARIN and LACNIC do not publish theirs, so holders in North and South America are largely missing here.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
131,072
IPv6 /64s
-
Registered blocks
2
Countries
1
What this tells you
- Holds 131,072 IPv4 addresses across 2 registered blocks.
- Announced by 2 networks, the largest being AS1103 SURF B.V. at 50% of the IPv4 space.
- All of the space we can place resolves to Netherlands.
Networks announcing this space
| Network | IPv4 share | |
|---|---|---|
| AS1103 SURF B.V. | 50% | |
| AS8075 Microsoft Corporation | 2% | |
| Not announced to the internet | 48% |
Countries this space resolves to
| Country | IPv4 share | |
|---|---|---|
| Netherlands | 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.