Registered organisation
Internet Systems Consortium
Address space registered to Internet Systems Consortium, 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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.
What this tells you
- Holds 4,608 IPv4 addresses and 983,040 IPv6 /64 networks across 33 registered blocks.
- Announced by 3 networks, the largest being AS30133 ISC F-ROOT NUL0 at 72% of the IPv4 space.
- Its space resolves to 15 countries, mostly Japan (28% of the IPv4 space).
Networks announcing this space
Space announced by a network covers 100% of this holder's IPv4 space and 100% of its IPv6 space. The table below divides that space.
| Network | IPv4 share | IPv6 share | |
|---|---|---|---|
| AS30133 ISC F-ROOT NUL0 | 72% | 73% | |
| AS23707 ISC F-ROOT HAN1 | 22% | 27% | |
| AS23713 ISC F-ROOT SEL1 | 6% | - |
Countries this space resolves to
Space we can place in a country covers 100% of this holder's IPv4 space and 100% of its IPv6 space. The table below divides that space.
| Country | IPv4 share | IPv6 share | |
|---|---|---|---|
| Japan | 28% | 7% | |
| New Zealand | 22% | 7% | |
| Australia | 11% | 7% | |
| China | 6% | 13% | |
| Cambodia | 6% | 7% | |
| Pakistan | 6% | 7% | |
| Taiwan | 6% | 7% | |
| Malaysia | 6% | 7% | |
| India | - | 13% | |
| Everything else (6 more) | 11% | 27% |
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.
Every figure on this page is also JSON: /api/v2/directory/org/internet-systems-consortium. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.