$ query “AS4693” --type=asn → 1 result(s)
AS4693 · CSK
CSK-IT MANAGEMENT CORPORATION
AS4693 is run by CSK-IT MANAGEMENT CORPORATION and is a residential access provider, registered in Japan. The system announces a respectable 45 056 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Japan.
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- October 03, 2026
- Last Seen
- October 14, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 7 / 7
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 45 056
- Largest IPv4 Prefix
- /19 (8 192 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇯🇵 Japan (45 056 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Peers
- 17 networks exchanging traffic without transit
- Downstream Customers
- 1 downstream buying transit
- Degree
- 20 unique BGP neighbors
- Reach
- 1 network in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (7 total)
- 203.140.0.0/19 (8 192 addresses (/19 prefix))
- 203.179.32.0/19 (8 192 addresses (/19 prefix))
- 210.159.96.0/19 (8 192 addresses (/19 prefix))
- 210.166.96.0/19 (8 192 addresses (/19 prefix))
- 210.249.192.0/19 (8 192 addresses (/19 prefix))
- 211.7.192.0/21 (2 048 addresses (/21 prefix))
- 211.7.208.0/21 (2 048 addresses (/21 prefix))
IPv6 Prefixes (1 total)
- 2400:af80::/32