DNS Record Lookup

Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain

Hosting & Network

kostian.net runs on AS12312, with email configured.

Hosting network
AS12312AS12312
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 661 other sites on AS12312. Stable here since we started watching (Jul 17, 2026).

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

DNS Records for kostian.net

HostnameTypeTTLPriorityContent
kostian.netA062.27.5.118
kostian.netSOA10800ns1.srv018.de hostmaster.dnssys.net 2026060901 10800 3600 604800 10800
kostian.netNS0ns2.srv018.de
kostian.netNS0ns1.srv018.de
kostian.netMX010mail.kostian.net
kostian.netTXT0v=spf1 a mx a:server18.web4a.de a:kostian.net -all
www.kostian.netSOA10800ns1.srv018.de hostmaster.dnssys.net 2026060901 10800 3600 604800 10800
www.kostian.netCNAME0kostian.net
www.kostian.netA062.27.5.118
www.kostian.netNS0ns1.srv018.de
www.kostian.netNS0ns2.srv018.de
www.kostian.netMX010mail.kostian.net
www.kostian.netTXT0v=spf1 a mx a:server18.web4a.de a:kostian.net -all

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DNS changes

We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

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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