Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS4693

Announcement observedAPNIC

CSK - CSK-IT MANAGEMENT CORPORATION · CSK

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active9/29/2026, 12:08:35Snapshot expired

View network topology RDAP registration

ASN: AS4693
Registration country: Japan
Name: CSK - CSK-IT MANAGEMENT CORPORATION
Abbreviation: CSK
Registration date: Not recorded
Status: Announcement observed
RIR: APNIC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
203.140.0.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/16/2026, 00:00:00	✓	×	Currently valid
203.179.32.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/16/2026, 00:00:00	✓	×	Currently valid
210.159.96.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/16/2026, 00:00:00	✓	×	Currently valid
210.166.96.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/16/2026, 00:00:00	✓	×	Currently valid
210.249.192.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/16/2026, 00:00:00	✓	×	Currently valid
211.7.192.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/16/2026, 00:00:00	✓	×	Currently valid
211.7.208.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/16/2026, 00:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: CSK - CSK-IT MANAGEMENT CORPORATION
RIR: APNIC
Registration country: Japan
Registration date: Not recorded
Abuse contact: Not recorded

Snapshot trend

9/29/2026, 12:08:357 v41 v69 Upstream · 12 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn · iana-rdap-asn-bootstrap