DNS Record Lookup

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Hosting & Network

theorie-leren.nl runs on AS204983, with email via Google Workspace.

Hosting network
AS204983AS204983
Managed DNS
Self-hosted / other
Email
Google Workspace
IPv6 (AAAA)
Enabled
CAA pinning
Set

Sits alongside 839 other sites on AS204983. Stable here since we started watching (Aug 21, 2026).

DNS Records for theorie-leren.nl

HostnameTypeTTLPriorityContent
theorie-leren.nlA0185.233.175.236
theorie-leren.nlNS0nsauth2.cyberfusion.nu
theorie-leren.nlNS0nsauth0.cyberfusion.nl
theorie-leren.nlNS0nsauth1.cyberfusion.nl
theorie-leren.nlSOA3600nsauth0.cyberfusion.nl hostmaster.cyberfusion.nl 2026110501 14400 3600 604800 3600
theorie-leren.nlMX01smtp.google.com
theorie-leren.nlTXT0google-site-verification=o22qA0rERwl3y3xv0jhVTm_mbc7Ex1NFnp_zt9pCEQY
theorie-leren.nlTXT0klaviyo-site-verification=WqPJSY
theorie-leren.nlTXT0v=spf1 include:_spf.cyberfusion.nl _spf.google.com include:klaviyo.com ~all
theorie-leren.nlCAA00 issue letsencrypt.org
theorie-leren.nlCAA00 issue sectigo.com
theorie-leren.nlCAA00 iodef mailto:customer-domains@cyberfusion.nl
theorie-leren.nlCAA00 issuewild sectigo.com
theorie-leren.nlCAA00 issuewild letsencrypt.org
theorie-leren.nlAAAA02a0c:eb00:0:f7::27
www.theorie-leren.nlA0185.233.175.237
www.theorie-leren.nlAAAA02a0c:eb00:0:f7::28

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

Uptime

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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

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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