Network Tools

Find your public IP address with detailed geographic location, ISP provider, and network information

Check DNS propagation and verify DNS records from multiple global locations to ensure your domain changes have propagated worldwide

View DNS records, nameservers, and zone file information for any domain

Query WHOIS database for domain registration and ownership information

Verify SMTP credentials and send a real test email from any mail server

Merge a new sender into your existing SPF record and check it against the 10 DNS lookup limit

Parse your IPv4 CIDR blocks and get all the info you need about your subnet

Convert an IP address into decimal, binary, hexadecimal, or IPv6 representation

Calculate a valid IPv4 subnet with CIDR notation from start and end addresses

Find the vendor and manufacturer of a device by its MAC address

Generate random MAC addresses with configurable quantity, prefix, case, and separator

Generate your own local, non-routable IPv6 addresses for your network according to RFC4193

Compare tunnel providers to expose your local dev server to the internet with licensing and pricing info