NSLookup
Look up DNS records and nameservers with NSLookup.io’s network utilities.
About NSLookup
NSLookup is a web-based DNS client for looking up DNS records and nameservers for a domain. After entering a domain name, it shows an overview of records and lets users choose from DNS servers including popular public resolvers, the domain's authoritative server, and local DNS servers around the world. It defaults to A, AAAA, CNAME, TXT, NS, MX and SOA records and allows selecting additional record types known to be in active use. It does not cache the DNS responses it displays, though queried DNS servers usually respond with cached records; authoritative servers do not serve cached records. Obsolete record types are not supported.
Key features
- Web-based DNS client for querying records for a domain name
- Select popular public, authoritative, or local DNS servers worldwide
- Default view shows A, AAAA, CNAME, TXT, NS, MX, SOA records
- Supports DNS record types known to be in active use
- Does not cache the DNS responses it displays
- Share lookup results and view multiple record types at once
Best for: People who need to check or troubleshoot DNS records and propagation from a web browser without using command-line tools.
Good for
- Runs in a web browser and provides information similar to dig and nslookup.
- Lets users select public, authoritative or worldwide local DNS servers.
- Supports many DNS record types known to be in active use.
Watch out for
- Obsolete DNS record types are not supported.
- Displayed responses may still come from upstream DNS server caches, except authoritative servers.
NSLookup at a glance
- Website
- nslookup.io
- Category
- Privacy & Security › Security Tools
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Security Tools
NSLookup alternatives
Tools and sites you could use instead, ranked by how closely they match.
DNS Watch looks up DNS records and measures lookup performance across resolvers.
Paid
24 alternativesOnline Tools offers browser-based utilities for hashing, encoding, encryption, formatting, compression, file processing, and more.
WhatsMyDNS checks DNS record propagation across global resolvers for record types including A, AAAA, MX, and TXT.
OpenCVE tracks vulnerabilities, vendors, products, and weaknesses through searchable security records.
mess with dns provides an interface for viewing and editing DNS records.
DNSDumpster searches domain records and related hosts for domain research and reconnaissance.
Popular in Security Tools
Well-known listings from the same topic.
Online Password Hash Crackonlinehashcrack.comOTP Authapps.apple.com/app/otp-auth/id659877384MD5 reverse lookupmd5.gromweb.comMozilla SSLssl-config.mozilla.orgchallenges.rechallenges.reGoPlus Locker V3gopluslabs.io
NSLookup FAQ
What DNS record types are shown by default?
A, AAAA, CNAME, TXT, NS, MX and SOA records are shown by default; additional record types can be selected.
Which DNS servers can I query?
Popular public DNS servers, the authoritative DNS server for the domain, and local DNS servers around the world.
Does nslookup.io cache the DNS responses it shows?
No. It does not cache the responses it shows, but the DNS servers queried usually respond with cached record sets; authoritative DNS servers do not serve cached records.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.