Free DNS Lookup Tool
Instantly inspect all active DNS records for any domain or hostname.
DNS Lookup FAQ & Guide
What is DNS (Domain Name System)?
DNS acts as the internet's phonebook, translating human-readable hostnames (such as alwaysup.dev) into machine-readable IP addresses (such as 192.0.2.1) so browsers can load internet resources.
What do common DNS records do?
A Record: Maps a domain or subdomain to an IPv4 address.
AAAA Record: Maps a domain or subdomain to an IPv6 address.
CNAME (Canonical Name): Aliases one domain name to another (common for setting up www or status pages).
MX (Mail Exchanger): Directs incoming emails to the proper mail server for your domain.
TXT Record: Contains text descriptions, widely used for SPF, DKIM verification and domain ownership audits.
CAA Record: Restricts which Certificate Authorities (CAs) can issue SSL/TLS certificates for the domain.
What is Time to Live (TTL) in DNS?
TTL is a numeric value in seconds indicating how long a DNS server or local computer should store the record in its local cache before checking the authoritative name servers again for updates. Lower TTL values (like 300s) propagate changes faster.