DNS Record Lookup

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

dr-koerner.com

DNS Records

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

Hosting & Network

dr-koerner.com runs on AS197540, with email via Microsoft 365.

Hosting network
AS197540AS197540
Managed DNS
Self-hosted / other
Email
Microsoft 365
IPv6 (AAAA)
Enabled
CAA pinning
None

Sits alongside 53,372 other sites on AS197540. Stable here since we started watching (Sep 28, 2026).

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

DNS Records for dr-koerner.com

HostnameTypeTTLPriorityContent
dr-koerner.comMX010linux1.ze-one.de
dr-koerner.comMX050drkoerner-com.mail.protection.outlook.com
dr-koerner.comSOA600ns01.ze-one.net dieter.drkoerner.com 2026051801 600 3600 2160000 600
dr-koerner.comA045.90.4.237
dr-koerner.comAAAA02a03:4000:20:1af::7e01
dr-koerner.comTXT0m8kxhw1w51v3b7tznzyl1gzct5gpn28b
dr-koerner.comTXT02021042900431647gus1b5hgdlzj0fshrcue8p90higg6ncd9wxwf5hms3okzd2d
dr-koerner.comTXT0MS=ms75552855
dr-koerner.comTXT0v=spf1 +a +mx include:spf.protection.outlook.com -all
dr-koerner.comTXT06qj6ffkl77vtxlntt3ls2c69wkxp09v4
dr-koerner.comNS0ns01.ze-one.net
dr-koerner.comNS0ns02.ze-one.net
dr-koerner.comNS0ns06.ze-one.org
www.dr-koerner.comTXT0v=spf1 +a +mx include:spf.protection.outlook.com -all
www.dr-koerner.comTXT0m8kxhw1w51v3b7tznzyl1gzct5gpn28b
www.dr-koerner.comTXT0MS=ms75552855
www.dr-koerner.comTXT02021042900431647gus1b5hgdlzj0fshrcue8p90higg6ncd9wxwf5hms3okzd2d
www.dr-koerner.comTXT06qj6ffkl77vtxlntt3ls2c69wkxp09v4
www.dr-koerner.comNS0ns06.ze-one.org
www.dr-koerner.comNS0ns01.ze-one.net
www.dr-koerner.comNS0ns02.ze-one.net
www.dr-koerner.comMX050drkoerner-com.mail.protection.outlook.com
www.dr-koerner.comMX010linux1.ze-one.de
www.dr-koerner.comAAAA02a03:4000:20:1af::7e01
www.dr-koerner.comA045.90.4.237
www.dr-koerner.comCNAME0dr-koerner.com
www.dr-koerner.comSOA600ns01.ze-one.net dieter.drkoerner.com 2026051801 600 3600 2160000 600

Get alerted the moment dr-koerner.com's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch dr-koerner.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.

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 dr-koerner.com

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