DNS Record Lookup

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

Hosting & Network

holtermann.co.cr runs on AS28050, with email via Microsoft 365.

Hosting network
AS28050AS28050
Managed DNS
Self-hosted / other
Email
Microsoft 365
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 30 other sites on AS28050. Stable here since we started watching (Jul 25, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to holtermann.co.cr.

DNS Records for holtermann.co.cr

HostnameTypeTTLPriorityContent
holtermann.co.crTXT0MS=ms63113001
holtermann.co.crTXT0MS=ms97548756
holtermann.co.crTXT0MS=ms64685263
holtermann.co.crTXT0v=spf1 ip4:200.74.248.127 include:spf.protection.outlook.com -all
holtermann.co.crSOA180ns11.constellix.com dns.constellix.com 2015010103 43200 3600 1209600 180
holtermann.co.crNS0ns11.constellix.com
holtermann.co.crNS0ns61.constellix.net
holtermann.co.crNS0ns21.constellix.com
holtermann.co.crNS0ns41.constellix.net
holtermann.co.crNS0ns31.constellix.com
holtermann.co.crNS0ns51.constellix.net
holtermann.co.crMX0holtermann-co-cr.mail.protection.outlook.com
holtermann.co.crA0200.74.248.127
www.holtermann.co.crCNAME0holtermann.co.cr
www.holtermann.co.crA0200.74.248.127
www.holtermann.co.crNS0ns21.constellix.com
www.holtermann.co.crNS0ns61.constellix.net
www.holtermann.co.crNS0ns51.constellix.net
www.holtermann.co.crNS0ns41.constellix.net
www.holtermann.co.crNS0ns11.constellix.com
www.holtermann.co.crNS0ns31.constellix.com
www.holtermann.co.crTXT0v=spf1 ip4:200.74.248.127 include:spf.protection.outlook.com -all
www.holtermann.co.crTXT0MS=ms63113001
www.holtermann.co.crTXT0MS=ms97548756
www.holtermann.co.crTXT0MS=ms64685263
www.holtermann.co.crSOA180ns11.constellix.com dns.constellix.com 2015010103 43200 3600 1209600 180
www.holtermann.co.crMX0holtermann-co-cr.mail.protection.outlook.com

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 holtermann.co.cr

Beta

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

Get alerted the moment holtermann.co.cr's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch holtermann.co.cr 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