DNS Lookup

DNS (Domain Name System) is the internet's "phone book." When you type a domain name like "example.com" into your browser, DNS translates it into an IP address that your computer can use to find the right server.

Common DNS record types

A record

Points a domain to an IPv4 address (e.g. 93.184.216.34)

AAAA record

Points a domain to an IPv6 address

MX record

Specifies which mail server receives email for the domain

CNAME record

Alias that points one domain name to another

TXT record

Text information, often used for verification and email security (SPF, DKIM)

NS record

Specifies which name servers are authoritative for the domain

1. Enter the domain name you want to check in the search field (e.g. example.com without www)
2. Select which record types you want to see — or leave all selected for a full overview
3. Click "Look up" to fetch the DNS records
4. Review the results — each record type is shown in its own section
5. Use the information for troubleshooting, verification or documentation

Tip: For subdomains (e.g. mail.example.com) enter the full address. Remember that DNS lookup shows what is currently configured — changes can take up to 48 hours to propagate (depending on TTL).

DNS lookup is an invaluable tool for developers, IT administrators and everyday users alike. Here are some practical use cases:

• Website troubleshooting — Check if A and AAAA records point to the correct server. If a site won't load, incorrect DNS configuration may be the cause.
• Email issues — MX records tell you which server receives email. TXT records show SPF, DKIM and DMARC setup for email security.
• Domain migration — When switching web hosting or providers: verify that NS records point to the correct name servers and that all necessary records have been copied.
• Security checks — Confirm that TXT records for verification (e.g. Google Search Console) are in place, and that no unexpected CNAME aliases exist.

Website shows old content after migration

TTL (Time To Live) determines how long DNS responses are cached. Lower TTL to 300–600 seconds before migrating, wait for propagation, make the change, then raise TTL again.

Email lands in spam or doesn't deliver

Check MX records and ensure they point to the correct mail server. Verify SPF, DKIM and DMARC in TXT records — missing or incorrect configuration is a common cause.

"Server not found" or DNS errors

Confirm that NS records are correct at your domain registrar. Check that A/AAAA records exist for the root domain and www subdomain.

Subdomain doesn't work

Add explicit A, AAAA or CNAME records for the subdomain. CNAME cannot be used on the root domain — only A/AAAA.