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kosei.co.jp

DNS Records

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Hosting & Network

kosei.co.jp runs on AS4713, with email configured.

Hosting network
AS4713AS4713
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 7,802 other sites on AS4713. Stable here since we started watching (Aug 14, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to kosei.co.jp.

DNS Records for kosei.co.jp

HostnameTypeTTLPriorityContent
kosei.co.jpSOA3600asns1.customer.ne.jp fnishimura.kosei.co.jp 1970010192 3600 1800 3600000 3600
kosei.co.jpA0122.17.137.136
kosei.co.jpNS0asns1.customer.ne.jp
kosei.co.jpNS0asns2.customer.ne.jp
kosei.co.jpTXT0v=spf1 +a include:_spf.mwprem.net include:_spf.activegate-ss.jp ~all
kosei.co.jpTXT0sending_domain1097552=e7a018cec12bbf93a307bf431c7459b85e3112f5e01138f0133706a8715f676c
kosei.co.jpTXT0pardot1097552=21701ef01a5649a2da3f1732b4674f5bfdfc0af18eb66f7f19949bb90a089627
kosei.co.jpMX020cluster1a.us.messagelabs.com
kosei.co.jpMX010cluster1.us.messagelabs.com
www.kosei.co.jpCNAME0kosei.co.jp
www.kosei.co.jpSOA3600asns1.customer.ne.jp fnishimura.kosei.co.jp 1970010192 3600 1800 3600000 3600
www.kosei.co.jpNS0asns2.customer.ne.jp
www.kosei.co.jpNS0asns1.customer.ne.jp
www.kosei.co.jpTXT0pardot1097552=21701ef01a5649a2da3f1732b4674f5bfdfc0af18eb66f7f19949bb90a089627
www.kosei.co.jpTXT0sending_domain1097552=e7a018cec12bbf93a307bf431c7459b85e3112f5e01138f0133706a8715f676c
www.kosei.co.jpTXT0v=spf1 +a include:_spf.mwprem.net include:_spf.activegate-ss.jp ~all
www.kosei.co.jpMX010cluster1.us.messagelabs.com
www.kosei.co.jpMX020cluster1a.us.messagelabs.com
www.kosei.co.jpA0122.17.137.136

Get alerted the moment kosei.co.jp's DNS changes

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Answers use the live DNS records shown on this page. AI-generated — double-check anything important.

About DNS Records

DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:

  • SOA (Start of Authority) - Contains administrative information about the zone
  • NS (Nameserver) - Specifies authoritative nameservers for the domain
  • A (Address) - Maps a domain to an IPv4 address
  • AAAA - Maps a domain to an IPv6 address
  • CNAME (Canonical Name) - Creates an alias pointing to another domain
  • MX (Mail Exchange) - Specifies mail servers for the domain