Registered organisation
Nippon Telegraph and Telephone Corporation
Address space registered to Nippon Telegraph and Telephone Corporation, 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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.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 136,192 IPv4 addresses and 4,295,032,832 IPv6 /64 networks across 12 registered blocks.
- Announced by 4 networks, the largest being AS37918 NTT, Inc. at 51% of the IPv4 space.
- All of the space we can place resolves to Japan.
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 | |
|---|---|---|---|
| AS37918 NTT, Inc. | 51% | <0.1% | |
| AS4697 Nippon Telegraph and Telephone Corporation | 37% | 100% | |
| AS59091 Kanagawa Institute of Technology | 6% | - | |
| AS38639 NTT DOCOMO BUSINESS, Inc. | 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 | 100% | 100% |
An operator of the same name runs networks of its own: see Nippon Telegraph and Telephone Corporation for the networks side of the same company.
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/nippon-telegraph-and-telephone-corporation. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.