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Free diagnostic tool

DNS Checker — Domain DNS Record Lookup

Check A, AAAA, MX, CNAME, TXT and NS records for any domain. Ideal for DNS propagation diagnostics, email configuration, SPF/DKIM/DMARC and nameserver checks.

Check DNSChange nameservers
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How to check DNS records for a domain?

DNS Checker checks DNS records in 3 steps: 1) Enter a domain (e.g. beohosting.com) — without https:// or www prefix. 2) Choose the record type: A (IPv4), AAAA (IPv6), MX (email servers), CNAME (alias), TXT (SPF/DKIM/DMARC), NS (nameservers). 3) Click Check — the tool queries the Google Public DNS resolver (8.8.8.8) and shows results with TTL values. Most common use cases: DNS propagation diagnostics after migration, checking MX records for email, verifying SPF/DKIM/DMARC TXT records, checking nameservers.

  • 6 record types — A, AAAA, MX, CNAME, TXT, NS
  • Google Public DNS resolver for reliable results
  • TTL values for each record (DNS cache lifetime)
  • Ideal for migration and email problem diagnostics

BeoHosting Team

10+ years of experience — Web hosting and infrastructure specialists

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DNS Checker

Enter a domain and select the record type to check.

Explanation

The 6 most important DNS records

Understanding DNS records is key to managing a domain and email system.

A record

Maps a domain to an IPv4 address. The most important record — without it the site does not open.

Example:

beohosting.com → 185.230.63.171

AAAA record

Maps a domain to an IPv6 address. More browsers and networks are moving to IPv6.

Example:

beohosting.com → 2a06:98c0:3600::103

MX record

Defines email servers for the domain. Priority (lower number = higher priority).

Example:

beohosting.com → mail.beohosting.com (prioritet 10)

CNAME record

Alias for another domain. Typically www → root domain or CDN setup.

Example:

www.beohosting.com → beohosting.com

TXT record

Text information: SPF (anti-spam), DKIM (email signature), DMARC (policy), domain verification.

Example:

v=spf1 +a +mx ~all

NS record

Nameservers that are authoritative for the domain. First point of contact for DNS queries.

Example:

ns1.beohosting.com, ns2.beohosting.com

DNS — how the Internet knows where your site is

DNS (Domain Name System) is a distributed system that translates readable domain names (beohosting.com) into IP addresses (185.230.63.171) that computers use to communicate. Without DNS, you would have to remember the IP address of every site.

When you open a site, your browser asks the DNS resolver (usually your ISP's or 8.8.8.8) for the IP. The resolver contacts root nameservers, then TLD nameservers (.com, .net), and finally the domain's authoritative nameservers which return the IP address.

DNS propagation and TTL

When you change a DNS record (e.g. move a site to a new server), it takes time for the change to spread globally — that is DNS propagation. Duration depends on the TTL (Time To Live) value of the record. Typical TTL: 3600s (1h) for stable records, 300s (5min) before a migration.

If the site works in one place but not another — it is probably DNS propagation in progress. Wait for the TTL period (max 24-48h) or use DNS Checker to see which resolvers still have the old record cached.

Related tools and services

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Frequently asked questions - DNS Checker

Answers to the most common questions about our services.

DNS (Domain Name System) is a distributed system that translates readable domain names (beohosting.com) into IP addresses (185.230.63.171). Without DNS, you would have to remember the IP address of every site. DNS is critical for the operation of all web services, email and online applications.

DNS propagation is the process in which DNS record changes spread through the global network of DNS resolvers. Duration depends on the TTL value of the record — usually 4-24h for stable records, but can be up to 48h. Before a planned migration, lower the TTL to 300s to speed up propagation.

An A record maps a domain to an IPv4 address (four numbers, e.g. 185.230.63.171). An AAAA record maps to an IPv6 address (eight hex groups, e.g. 2a06:98c0:3600::103). Modern sites should have both — IPv4 for compatibility, IPv6 for faster connections on new networks.

SPF (v=spf1) lists which mail servers are allowed to send email on behalf of your domain. DKIM adds a cryptographic signature to email for verification. DMARC (v=DMARC1) combines SPF and DKIM with a policy on what to do with failed messages. All three are key for antispam protection and deliverability.

No. DNS queries are sent directly via our API to Google Public DNS (8.8.8.8). The domains you check are not stored in a database. Everything is 100% private and leaves no trace.

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