Japan · ISP
AS4713
NTT Communications Corporation
ISP APNIC OCN
OCN, the largest Japanese consumer ISP. Japan is one of the few markets where native IPv6 on residential lines is the norm rather than the exception.
ISP — Residential eyeball network. Addresses here look like customers, because they are.
- Announced prefixes
- 5
- 4 IPv4 · 1 IPv6
- IPv4 addresses
- 6.3M
- across the blocks listed below
- Largest block
- /11
- smallest prefix length announced
- Registry
- APNIC
- OCN
01 Ranges
Announced ranges
The blocks AS4713 advertises to the rest of the internet in this snapshot. A production routing table carries more — large carriers de-aggregate for traffic engineering — so treat the totals as a floor.
Matched in your browser against the 5 blocks below. Nothing is sent anywhere.
IPv4 — 4 blocks
| Prefix | First address | Last address | Addresses |
|---|---|---|---|
| 60.32.0.0/12 | 60.32.0.0 | 60.47.255.255 | 1,048,576 |
| 118.0.0.0/11 | 118.0.0.0 | 118.31.255.255 | 2,097,152 |
| 125.192.0.0/11 | 125.192.0.0 | 125.223.255.255 | 2,097,152 |
| 220.208.0.0/12 | 220.208.0.0 | 220.223.255.255 | 1,048,576 |
IPv6 — 1 blocks
| Prefix | First address | Last address | Addresses |
|---|---|---|---|
| 2001:218::/32 | 2001:218:: | 2001:218:ffff:ffff:ffff:ffff:ffff:ffff | 2^96 |