NsLookup Tool

Our NsLookup tool performs authoritative queries using a custom raw-DNS engine. It bypasses standard resolver caches to provide real-time A, AAAA, MX, and TXT record data, including full hex dumps and dig-style headers for deep packet inspection.

To lookup a DNS Record for a Host, simply enter a Domain or Hostname in the box provided.

Enter Hostname or Domain- e.g., www.webwiz.net or webwiz.net
Type:

Query each of the domain's Authoritative DNS Name Servers

DNS Server (optional)
Recursive Lookup

► Advanced Options

Common DNS Record Types
A / AAAA: Maps hostnames to IPv4 (32-bit) or IPv6 (128-bit) addresses.
CNAME: A canonical "Alias" pointing one domain name to another.
MX: Mail Exchange records that route email to the correct mail servers.
TXT: Used for human-readable text and security (SPF, DKIM, DMARC).
PTR: "Pointer" records used for Reverse DNS (mapping IP to Hostname).

DNS Response Codes (RCodes)
NOERROR (0): Query successful; records found.
NXDOMAIN (3): The domain name does not exist in the registry.
SERVFAIL (2): The name server encountered an internal error.
REFUSED (5): The server refused to answer (likely an IP/ACL block).

Advanced Diagnostics
Raw Wire Format: Displays the unedited 12-byte header and section counts (Question, Answer, Authority, Additional) in dig style.
Binary Hex View: Shows the exact byte stream. Useful for verifying DNS compression pointers (C0 0C) and field offsets.

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Web Wiz is the trading name of Web Wiz Ltd. Company registration No. 05977755. Registered in England and Wales.
Registered office: Web Wiz Ltd, Unit 18, The Glenmore Centre, Fancy Road, Poole, Dorset, BH12 4FB, UK.

Prices exclude VAT at 20% unless otherwise stated. VAT No. GB988999105 - $, € prices shown as a guideline only.