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 is built for the inspect-edit-copy loop developers repeat dozens of times per day. Because Utilitoo runs in the browser, you avoid context switching to desktop utilities while reviewing logs, configs, or API responses. When output feeds into production systems, validate on a staging copy first.
Common use cases
- Look up DNS records for any domain - a common daily workflow on Utilitoo.
- Preparing dns lookup results to paste into pull requests, tickets, or team chat.
- Validating dns lookup data from a third-party API before wiring it into your application.
- Teaching or documenting dns lookup workflows without installing desktop software.
- Cross-checking DNS Lookup output against a colleague's result during pair debugging or code review.
Tips & common mistakes
DNS Lookup runs entirely in your browser on Utilitoo, so you can paste sensitive API payloads, configs, or logs without uploading them. Start with a small sample to confirm the output format, then process the full input. If results look wrong, check for trailing commas, wrong encoding, or mixed line endings - common issues when copying from terminals or log viewers. Keep DNS Lookup in a pinned tab during active development - it is faster than CLI one-offs for quick transforms. Use the Related Tools section to chain utilities without returning to the homepage.
Common errors
- Unexpected output from DNS Lookup - double-check input format, character encoding, and whether the source data was truncated when pasted.
- Browser limits - very large inputs may slow or freeze the tab; split the data into smaller chunks if performance degrades.
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.