NSlookup

What is NSLookup.Network and why is it free?

NSLookup.Network is a web-based nslookup alternative that delivers real-time DNS answers directly from authoritative name servers. We launched it as a free community resource so that website owners, sysadmins, and SEO specialists can diagnose DNS issues without installing software or exposing their network tools.

Every query runs over DNS over HTTPS for privacy, and we cache results to speed up repeat lookups while still giving you the option to confirm live data.

What is the nslookup command and when should I use it?

nslookup is a classic DNS troubleshooting command available on Windows, macOS, and Linux. It lets you query specific record types, inspect authoritative name servers, and debug issues like propagation delays or misconfigured MX records.

If you do not have shell access or prefer a shareable link to your results, NSLookup.Network mirrors the same functionality through an intuitive interface and provides a permalink for every lookup.

Which DNS record types can NSLookup.Network inspect?

We support every essential DNS record for modern infrastructure, including:

• A and AAAA – IPv4 and IPv6 address records that power your website.
• MX – Mail exchange servers that route inbound email.
• TXT – Text records used for SPF, DKIM, DMARC, and verification tags.
• NS – Name server delegations that define domain authority.
• SOA – Start of Authority records that expose serial numbers and refresh policies.
• PTR – Reverse lookup records that validate IP reputation.

You can query a single record type or run an "All records" lookup to compare every response side-by-side.

How do authoritative name servers impact my DNS results?

Every domain is ultimately controlled by its authoritative name servers. If those servers are out of sync or misconfigured, users may see stale IP addresses, broken email routing, or SSL warnings. NSLookup.Network fetches results directly from those authorities so you can verify what the Internet will see after propagation completes.

How can I troubleshoot DNS issues with NSLookup.Network?

Start by entering the domain or IP address in the search bar and choose the record type you care about. Compare cached versus live results to spot changes, review TTL values to estimate propagation windows, and repeat lookups from different networks if you suspect regional caching.

If you are migrating name servers, test the new NS records and SOA serial numbers. For email problems, validate SPF, DKIM, and MX records to confirm they point to your provider.