DNS Record Lookup

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

Hosting & Network

440mastering.com runs on AS196713, with email configured.

Hosting network
AS196713AS196713
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 1,795 other sites on AS196713. Stable here since we started watching (Oct 5, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to 440mastering.com.

DNS Records for 440mastering.com

HostnameTypeTTLPriorityContent
440mastering.comTXT0v=spf1 ip4:86.109.170.0/24 ip4:86.109.171.0/24 -all
440mastering.comSOA300servidor.dnsprimario.com admin.dnsprimario.com 2026073101 10800 3600 604800 300
440mastering.comMX010mail.440mastering.com
440mastering.comNS0servidor.dnssecundario.com
440mastering.comNS0servidor.dnsprimario.com
440mastering.comA086.109.170.4
www.440mastering.comCNAME0440mastering.com
www.440mastering.comTXT0v=spf1 ip4:86.109.170.0/24 ip4:86.109.171.0/24 -all
www.440mastering.comA086.109.170.4
www.440mastering.comNS0servidor.dnsprimario.com
www.440mastering.comNS0servidor.dnssecundario.com
www.440mastering.comMX010mail.440mastering.com
www.440mastering.comSOA300servidor.dnsprimario.com admin.dnsprimario.com 2026073101 10800 3600 604800 300

Get alerted the moment 440mastering.com's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch 440mastering.com 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