DNS Record Lookup
Fast DNS queries without full page reloads.
- Runs in your browser
- Free, no signup
DNS Records
—| Type | Record Value | TTL | Copy |
|---|---|---|---|
| Press Lookup or choose a record type above. | |||
DNS queries are performed through standard resolvers and domain targets are not stored.
The Domain Name System (DNS) translates human-readable domain names into machine-readable IP addresses and routing instructions. When configuring a website, updating email delivery, or migrating hosts, checking DNS records is essential.
This tool queries authoritative public resolvers for all standard DNS record types (A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, PTR). Switch record types dynamically without reloading the entire page.
How to use this tool
- Enter a domain name such as example.com.
- Select a record type (A, AAAA, CNAME, MX, TXT, NS, SOA, CAA) or click any of the quick-filter tabs.
- Click Lookup to query the records, inspect TTL values, and copy record contents.
Common DNS record types and their jobs
A and AAAA records map a domain to IPv4 and IPv6 addresses. CNAME records create aliases pointing one hostname to another. MX records specify the mail servers responsible for accepting incoming email for your domain.
TXT records hold arbitrary text, widely used for email verification (SPF, DKIM, DMARC) and domain ownership verification. NS records identify the authoritative nameservers responsible for your DNS zone.
What is DNS TTL (Time To Live)?
TTL is the number of seconds a DNS resolver is permitted to cache a record before querying the authoritative nameserver again. A TTL of 300 means records are refreshed every 5 minutes, while 86400 means 24 hours.
Before migrating servers or changing mail providers, lowering TTL values in advance prevents visitors from experiencing stale cache delays.
Frequently asked questions
Why are my updated DNS records not showing up yet?
DNS propagation depends on the TTL value of your previous record. If your old TTL was 86400 (24 hours), resolving caches across the world may retain the old value until that duration expires.
Can I query custom DNS servers with this tool?
No. For security and stability, ToolDuck uses verified public resolvers to prevent arbitrary UDP packet reflection or DNS cache poisoning attacks.