DNS Lookup
Look up any DNS record type for a domain.
Enter a domain name to query DNS records. Protocol and path are stripped automatically.
What Is a DNS Lookup?
A DNS (Domain Name System) lookup translates human-readable domain names into the IP addresses and other records that computers use to route traffic across the internet. Every time you visit a website, send an email, or connect to any online service, a DNS query runs behind the scenes. This tool lets you perform those queries manually so you can inspect exactly what records are published for any domain.
Common DNS Record Types
A records map a domain to an IPv4 address, while AAAA records do the same for IPv6. MX records specify which mail servers accept email for the domain and their priority order. NS records identify the authoritative nameservers responsible for the domain's DNS zone. TXT records hold arbitrary text and are widely used for email authentication (SPF, DKIM, DMARC), domain verification, and security policies. CNAME records create aliases that point one domain name to another. SOA records contain zone-level metadata including the primary nameserver, administrator contact, serial number, and cache timing values.
When to Use a DNS Lookup
DNS lookups are essential for troubleshooting website and email issues. If a site is unreachable, checking its A record confirms whether DNS is resolving to the correct IP. If emails are bouncing, inspecting MX records reveals whether mail routing is configured properly. After migrating hosting or changing nameservers, a DNS lookup verifies that new records have propagated. Developers and system administrators also use DNS lookups to audit TXT records for SPF and DKIM configuration, verify CNAME setups for CDN services, and confirm SOA serial numbers after zone file updates.