DNS Record Lookup

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

dat4u.cz

DNS Records

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

Hosting & Network

dat4u.cz runs on AS199657, with email via Google Workspace.

Hosting network
AS199657AS199657
Managed DNS
Self-hosted / other
Email
Google Workspace
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 28 other sites on AS199657. Stable here since we started watching (Aug 26, 2026).

The apex and www are the same hosting — the apex via A records.

DNS Records for dat4u.cz

HostnameTypeTTLPriorityContent
dat4u.czTXT0google-site-verification=1Pm6ZjTfPtc6NAY5uCYN4CpIHemuJga7n1q4aa0oXLM
dat4u.czTXT0v=spf1 a mx ip4:94.199.98.128 include:_spf.google.com -all
dat4u.czMX010aspmx.l.google.com
dat4u.czMX030aspmx2.googlemail.com
dat4u.czMX020alt2.aspmx.l.google.com
dat4u.czMX030aspmx3.googlemail.com
dat4u.czMX030aspmx4.googlemail.com
dat4u.czMX030aspmx5.googlemail.com
dat4u.czMX020alt1.aspmx.l.google.com
dat4u.czSOA3600ns1.regzone.cz administrator.czechia.cz 2026101902 10800 1800 1814400 3600
dat4u.czA094.199.98.128
dat4u.czNS0ns1.regzone.cz
dat4u.czNS0ns1.regzone.info
dat4u.czNS0ns1.regzone.de
www.dat4u.czA094.199.98.128

Get alerted the moment dat4u.cz's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch dat4u.cz continuously, notifying you the moment anything moves across all three signals:

DNS monitor showing the hosting provider, current A, MX, NS, and TXT records, and a history of MX and TXT changes

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, CNAME, TXT 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 dat4u.cz

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