CSK-IT MANAGEMENT CORPORATION
AS4693 is CSK-IT MANAGEMENT CORPORATION (scsk.jp). It announces 45,056 IPv4 addresses in 7 prefixes, and 1 IPv6 prefixes.
Japan· APNIC· allocated 1995-08-30· 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.
- Japan45,056 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- CSK
- name
- CSK-IT MANAGEMENT CORPORATION
- country
- JP
- source
- jpnic
- updated
- 2010-02-05
- descr
- CSK-IT MANAGEMENT CORPORATION
- admin
- TH9886JP
- tech
- TH9886JP
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 IP630.14%
- None here
- None here
- None here
- None here
- None here
- Hosting IP7681.70%
- None here
- None here
- None here
- 0.01%
- 0.01%
- 0.01%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 203.140.0.0/19 | Japan | not found | 17 | 2026-10-02 |
| 203.179.32.0/19 | Japan | not found | 17 | 2026-10-02 |
| 210.159.96.0/19 | Japan | not found | 17 | 2026-10-02 |
| 210.166.96.0/19 | Japan | not found | 17 | 2026-10-02 |
| 210.249.192.0/19 | Japan | not found | 17 | 2026-10-02 |
| 211.7.192.0/21 | Japan | not found | 17 | 2026-10-02 |
| 211.7.208.0/21 | Japan | not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2400:af80::/32 | Japan | not found | 19 | 2026-10-02 |
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.