DNS Record Lookup

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

Hosting & Network

cstex.jp runs on AS9371, with email configured.

Hosting network
AS9371AS9371
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 64,545 other sites on AS9371. Stable here since we started watching (Oct 16, 2026).

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

DNS Records for cstex.jp

HostnameTypeTTLPriorityContent
cstex.jpSOA3600master.dns.ne.jp tech.sakura.ad.jp 2026092403 3600 900 3600000 3600
cstex.jpNS0ns1.dns.ne.jp
cstex.jpNS0ns2.dns.ne.jp
cstex.jpMX010cstex.jp
cstex.jpTXT0v=spf1 a:www938.sakura.ne.jp mx ~all
cstex.jpTXT0MS=FD1FBAC3D8F7DA545752F52410FA43DAC41605A6
cstex.jpA0219.94.128.178
www.cstex.jpNS0ns1.dns.ne.jp
www.cstex.jpNS0ns2.dns.ne.jp
www.cstex.jpMX010cstex.jp
www.cstex.jpTXT0v=spf1 a:www938.sakura.ne.jp mx ~all
www.cstex.jpTXT0MS=FD1FBAC3D8F7DA545752F52410FA43DAC41605A6
www.cstex.jpA0219.94.128.178
www.cstex.jpSOA3600master.dns.ne.jp tech.sakura.ad.jp 2026092403 3600 900 3600000 3600
www.cstex.jpCNAME0cstex.jp

Get alerted the moment cstex.jp's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch cstex.jp continuously, notifying you the moment anything moves across all three signals:

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

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

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

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Beta

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