D.C.N. Corporation
AS18097 is D.C.N. Corporation. It announces 19,712 IPv4 addresses in 19 prefixes, and 1 IPv6 prefixes.
Japan· APNIC· allocated 2001-12-27· isp
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Japan19,200 · 97.40%
- United States512 · 2.60%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- DCN
- name
- D.C.N. Corporation
- country
- JP
- source
- apnic
- updated
- 2024-10-03
- descr
- D.C.N. Corporation / 6F 4-2-16 Komaba Meguro / Tokyo JAPAN
- remarks
- Email address for spam or abuse complaints : abuse@dcn.ad.jp
- maintainer
- MAINT-JPNIC
- maintainer email
- hostmaster@nic.ad.jp
- abuse email
- hostmaster@nic.ad.jp
- abuse phone
- +81-3-5297-2311
- abuse kind
- irt
- admin
- JNIC1-AP
- admin name
- Japan Network Information Center
- admin email
- hostmaster@nic.ad.jp
- admin phone
- +81-3-5297-2312
- admin kind
- role
- admin country
- JP
- tech
- JNIC1-AP
- tech name
- Japan Network Information Center
- tech email
- hostmaster@nic.ad.jp
- tech phone
- +81-3-5297-2312
- tech kind
- role
- tech country
- JP
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP260.13%
- None here
- None here
- None here
- None here
- None here
- Hosting IP3,07215.58%
- None here
- None here
- None here
- SSH IP580.29%
- SMTP IP270.14%
- 0.06%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 27.109.120.0/22 | Japan | not found | 17 | 2026-10-02 |
| 45.113.172.0/22 | Japan | not found | 17 | 2026-10-02 |
| 103.36.140.0/22 | Japan | not found | 17 | 2026-10-02 |
| 103.53.96.0/22 | Japan | not found | 17 | 2026-10-02 |
| 103.83.24.0/22 | Japan | not found | 17 | 2026-10-02 |
| 119.15.144.0/21 | Japan | not found | 17 | 2026-10-02 |
| 121.100.56.0/22 | Japan | not found | 17 | 2026-10-02 |
| 121.100.60.0/22 | Japan | not found | 17 | 2026-10-02 |
| 123.108.84.0/22 | Japan | not found | 17 | 2026-10-02 |
| 153.124.232.0/24 | Japan | not found | 17 | 2026-10-02 |
| 153.124.233.0/24 | Japan | not found | 17 | 2026-10-02 |
| 153.124.234.0/24 | Japan | not found | 17 | 2026-10-02 |
| 153.124.235.0/24 | Japan | not found | 17 | 2026-10-02 |
| 210.189.176.0/22 | Japan | not found | 17 | 2026-10-02 |
| 210.189.180.0/22 | Japan | not found | 17 | 2026-10-02 |
| 210.189.184.0/22 | Japan | not found | 17 | 2026-10-02 |
| 210.189.188.0/22 | Japan | not found | 17 | 2026-10-02 |
| 216.179.198.0/23 | United States | not found | 17 | 2026-10-02 |
| 219.105.32.0/20 | Japan | not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2402:c400::/32 | Japan | not found | 20 | 2026-10-02 |
Test the real build first.
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