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Hosting & Network

koumakan.jp runs on AS197540, with email configured.

Hosting network
AS197540AS197540
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Enabled
CAA pinning
Set

Sits alongside 4,999+ other sites on AS197540. Stable here since we started watching (Jul 24, 2026).

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

DNS Records for koumakan.jp

HostnameTypeTTLPriorityContent
koumakan.jpA094.16.117.138
koumakan.jpSOA86400ns.koumakan.jp hostmaster.tearmoon.com 2026070300 18000 3600 1209600 86400
koumakan.jpAAAA02a03:4000:20:24c::2
koumakan.jpNS0ns1.he.net
koumakan.jpNS0ns.koumakan.jp
koumakan.jpNS0ns5.he.net
koumakan.jpNS0ns3.he.net
koumakan.jpNS0ns4.he.net
koumakan.jpNS0ns2.he.net
koumakan.jpMX010mail.tearmoon.com
koumakan.jpCAA01 issue letsencrypt.org;accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/3496925046
koumakan.jpTXT0spf2.0/pra mx ~all
koumakan.jpTXT0v=spf1 mx -all
koumakan.jpTXT0google-site-verification=pdm4AoVSEzB5Zn0PI0pRBEzz06UvcLqRo1AbQNf7hFE
www.koumakan.jpA094.16.117.138
www.koumakan.jpTXT0v=spf1 include:koumakan.jp -all
www.koumakan.jpTXT0spf2.0/pra include:koumakan.jp ~all
www.koumakan.jpCNAME0hosting.koumakan.jp
www.koumakan.jpAAAA02a03:4000:20:24c::2

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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