NSLookup - DNS Resolution Utility

Query Domain Name System servers to resolve hostnames to IP addresses or perform reverse DNS lookups. Essential for network troubleshooting and DNS configuration verification.

Usage

nslookup-tool [options] <hostname>

Features

• Forward DNS lookup (hostname → IP)
• Reverse DNS lookup (IP → hostname)
• Query specific DNS record types (A, AAAA, MX, CNAME, TXT)
• Specify custom DNS server

Examples

# Basic lookup
nslookup-tool example.com

# MX record lookup
nslookup-tool -type=mx example.com

# Use specific DNS server
nslookup-tool google.com 8.8.8.8