DNS Record Lookup

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

defur.com

DNS Records

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

Hosting & Network

defur.com runs on AS40021, with DNS by Namecheap and email via Google Workspace.

Hosting network
AS40021AS40021
Managed DNS
Namecheap
Email
Google Workspace
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 4,999+ other sites on AS40021. Stable here since we started watching (Jul 23, 2026).

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

DNS Records for defur.com

HostnameTypeTTLPriorityContent
defur.comNS0dns1.registrar-servers.com
defur.comNS0dns2.registrar-servers.com
defur.comMX05alt2.aspmx.l.google.com
defur.comMX01aspmx.l.google.com
defur.comMX05alt1.aspmx.l.google.com
defur.comMX010aspmx3.googlemail.com
defur.comMX010aspmx2.googlemail.com
defur.comSOA3601dns1.registrar-servers.com hostmaster.registrar-servers.com 1767991994 43200 3600 604800 3601
defur.comTXT05kdm5tecdfa1oebd12pkr2vhhi
defur.comTXT0v79s31th3puah0vnu82lcn4ng9
defur.comTXT01p50pv7tnt3jtu4bp6ghodpjcp
defur.comTXT05o129ehcd3kjfmh8m2apcliksq
defur.comTXT0ep9m3d1lpjs9650e5cicc26lt1
defur.comTXT0eu9fcn49t0r1tel1j391adip3
defur.comTXT0v=spf1 include:_spf.google.com include:sendgrid.net ~all
defur.comA0144.126.157.235
www.defur.comCNAME0defur.com
www.defur.comTXT05kdm5tecdfa1oebd12pkr2vhhi
www.defur.comTXT0eu9fcn49t0r1tel1j391adip3
www.defur.comTXT0v=spf1 include:_spf.google.com include:sendgrid.net ~all
www.defur.comTXT01p50pv7tnt3jtu4bp6ghodpjcp
www.defur.comTXT0v79s31th3puah0vnu82lcn4ng9
www.defur.comTXT0ep9m3d1lpjs9650e5cicc26lt1
www.defur.comTXT05o129ehcd3kjfmh8m2apcliksq
www.defur.comMX010aspmx3.googlemail.com
www.defur.comMX05alt2.aspmx.l.google.com
www.defur.comMX01aspmx.l.google.com
www.defur.comMX05alt1.aspmx.l.google.com
www.defur.comMX010aspmx2.googlemail.com
www.defur.comSOA3601dns1.registrar-servers.com hostmaster.registrar-servers.com 1767991994 43200 3600 604800 3601
www.defur.comNS0dns1.registrar-servers.com
www.defur.comNS0dns2.registrar-servers.com
www.defur.comA0144.126.157.235

What's up with DNS →

Our daily roundup of the most interesting DNS changes across the web — hosting and CDN migrations, network moves, and security-config shifts.

Ask about defur.com

Beta

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

Get alerted the moment defur.com's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch defur.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.

Monitor DNS free

Free for your first domain: uptime, DNS, and certificate together. No credit card.

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