OCN
Data as of 2026-09-27
BGP inherited
Complete entity footprint
2 linked clusters ·
311 netblocks ·
28,849,424 IPv4 addresses ·
14 IPv6 prefixes
This organisation's clusters combined by evidence —
shared operating domain ocn.ne.jp
— not name similarity, so genuinely different organisations that share a name are excluded.
This organisation
| Netblocks | 114 · 24,748,560 IPv4 addresses |
| Registered in | Japan (113) · Switzerland (1) |
| Also registered under this name | 192 netblocks across 71 separate records |
| Record ID | 246837833 |
| Registry | APNIC |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 6 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (114)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 27.114.0.0/17 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.120.176.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.132.0.0 – 27.132.8.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.132.176.0/21 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.132.184.0/21 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.133.10.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.133.24.0 – 27.133.45.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.133.64.0 – 27.133.89.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.133.172.0 – 27.133.174.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.133.175.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.134.16.0 – 27.134.21.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.134.72.0/21 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.134.96.0/19 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.134.189.0 – 27.134.231.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.134.232.0 – 27.134.237.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.134.238.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 27.135.57.0 – 27.135.72.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 36.52.16.0 – 36.52.25.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 36.52.112.0 – 36.52.114.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 36.52.115.0 – 36.52.116.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 36.52.117.0 – 36.52.125.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 36.52.144.0/21 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 36.52.168.0 – 36.52.173.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 36.52.223.0 – 36.52.237.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 58.88.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 59.156.21.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 59.156.25.0 – 59.156.28.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 59.156.135.0 – 59.156.139.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 59.156.140.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 59.156.200.0 – 59.156.202.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 60.32.0.0/12 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 61.5.240.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 61.5.244.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 61.44.0.0/20 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 61.44.67.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 61.87.8.0 – 61.87.13.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 110.74.117.0 – 110.74.120.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 110.74.124.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 111.234.48.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 111.234.120.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 111.234.124.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 111.234.192.0 – 111.234.217.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 111.234.246.0 – 111.234.255.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 111.235.39.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 111.235.46.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 114.144.0.0/12 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 114.160.0.0/11 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 118.0.0.0/12 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 118.16.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.107.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.108.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.206.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.207.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.208.0 – 119.150.212.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.213.0 – 119.150.214.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.228.0 – 119.150.235.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.236.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.237.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 119.150.238.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 121.112.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 122.1.0.0/16 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 122.16.0.0/12 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 122.145.39.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 122.145.112.0 – 122.145.114.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 122.145.115.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 122.145.130.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 123.216.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 123.224.0.0/14 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 124.84.0.0/14 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 124.96.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 125.170.0.0/16 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 125.172.0.0/14 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 125.200.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 138.243.0.0/16 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 153.120.222.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 153.128.0.0 – 153.253.255.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.28.63.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.130.0 – 175.103.133.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.134.0 – 175.103.143.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.152.0 – 175.103.158.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.159.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.160.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.166.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.168.0 – 175.103.173.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.174.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.178.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 175.103.192.0 – 175.103.215.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 180.0.0.0/10 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 180.131.64.0 – 180.131.75.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 180.131.76.0 – 180.131.82.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 180.131.83.0 – 180.131.95.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 183.181.122.0 – 183.181.127.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 183.181.130.0 – 183.181.133.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 183.181.138.0 – 183.181.141.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 194.209.14.240/28 | OCN-NET | RIPE | ASSIGNED PA | ● low |
| 202.191.16.0/20 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 219.160.0.0 – 219.165.255.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.18.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.32.0/22 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.36.0 – 220.150.38.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.39.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.40.0 – 220.150.46.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.47.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.65.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.80.0 – 220.150.82.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.84.0/23 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.86.0 – 220.150.88.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.200.0/24 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.201.0 – 220.150.204.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.205.0 – 220.150.207.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 220.150.218.0 – 220.150.222.255 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 221.184.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 222.144.0.0/13 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
| 223.216.0.0/14 | OCN | APNIC | ALLOCATED PORTABLE | ● low |
Footprint over time
14 weekly snapshots · JSON
114
0 netblocks since 2026-07-05
2026-07-05
peak 114
2026-09-27
Domains this organisation publishes
what's this?Other domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: D
how networks compare →
21.1%
of checked blocks have valid RPKI ROA coverage
(24 of 114)
RPKI-inferred operator
NTT DOCOMO BUSINESS, Inc.
Nearly all of this network's RPKI-covered space is cryptographically authorized for this
single operator — the registered netname is likely one of its internal infrastructure labels.
No discrepancies found among checked blocks.
NIC Handles
CH-UNISOURCE-MNT
DUMY-RIPE
DUMY-RIPE
JNIC1-AP
JNIC1-AP
MAINT-JPNIC