DNS Lookup
Look up DNS records for any domain.
DNS records control email routing, domain verification, CDN configuration, and service discovery. When a site won't resolve or email bounces, the first step is checking DNS. Utilitoo's DNS Lookup queries live records for A, AAAA, CNAME, MX, TXT, and NS types from any domain name.
Sysadmins troubleshoot propagation after DNS changes, developers verify TXT records for domain ownership, and email administrators inspect MX priorities before migrating mail providers.
Enter a domain, select the record type, and click Lookup. Results show the current DNS response in JSON format. Pair with IP Lookup for geolocation details or HTTP Header Viewer to inspect the web server response.
Lookups are performed server-side for accurate DNS resolution. Domain names are not stored. Free and fast for anyone managing domains and infrastructure.
DNS Lookup queries common record types so you can see what the public DNS system returns for a name. It is a troubleshooting companion for migrations, email, and web hosting changes.
Common use cases
- Checking A/AAAA records after a DNS cutover.
- Verifying MX and TXT records during email deliverability debugging.
- Teaching how public DNS answers differ from local /etc/hosts.
- Confirming CNAME chains for CDN or SaaS onboarding.
- Documenting record sets before a domain migration.
Tips & common mistakes
Public resolvers can cache - wait out TTLs after changes. This tool's network path may differ from your corporate DNS. Pair with IP Lookup once you have an address to inspect. After a cutover, query more than once and from another network if answers disagree with dig on your laptop. Save the record set you expect in the ticket so reviewers can compare. Combine with HTTP Header Viewer when debugging web hosting after DNS looks correct.
Common errors
- Looking up a hostname that only exists on internal DNS yields empty public answers.
- Trailing dots and typoed TLDs cause unexpected NXDOMAIN results.
How to use
- Enter a domain name.
- Select record type.
- Click Lookup.
Frequently Asked Questions
Which DNS record types are supported?▼
A, AAAA, CNAME, MX, TXT, and NS records can be queried on Utilitoo.
Can I look up DNS for an IP address?▼
Enter a domain name, not an IP. Use IP Lookup for address information instead.
Why do results differ from my local DNS?▼
Results reflect the server's DNS resolver at query time. Propagation and resolver caching may cause differences.
How fast is DNS lookup?▼
Most queries return in under a second depending on the domain's nameserver response time.
Are lookups stored?▼
No. Utilitoo does not store DNS query history.
Related Tools
IP Lookup
Look up IP address information.
HTTP Header Viewer
View HTTP response headers for any URL.
CIDR Calculator
Calculate network details from CIDR notation.
Subnet Calculator
Calculate subnet details and split networks.
URL Encoder / Decoder
Encode and decode URL strings and query parameters.
User Agent Parser
Parse browser user agent strings.