Tools

Tools to simplify the way you manage and monitor your domains, websites, and networks.

The tools below are FREE for unlimited use.

Subnetting

calculate

Online Subnet Calculator

link

Use CIDR notation to quickly look up details of IPv4 subnets and CIDR blocks.

Calculate

View Tool

DNS Tools

dns

DNS Tools

link

Look up DNS records for a hostname like 'example.com'.

DNS Tools

Look up DNS

View Tool

domain

WHOIS Lookup

link

Look up registration information for a domain like 'example.com'.

WHOIS Lookup

Look up WHOIS

View Tool

mail

SPF Checker

link

Validate the SPF records for a domain like 'example.com' or the syntax on a to-be-published SPF record.

SPF Lookup

Look up SPF

View Tool

public

What is my IP?

link

Look up your IP address that is used publicly.

What is my IP

Find my IP address

View Tool

Other Tools

shield

Security Tools

link

Look up security of websites, including SSL and TLS certificates.

DNS Tools

Check security

View Tool

memory

Binary Converter

link

Convert between binary, octal, decimal, and hexadecimal.

DNS Tools

Convert

View Tool

code

Encoder/Decoder

link

Encode and decode using different encoding schemes: URL, Base64, and Base64URL.

Encode

View Tool

These tools and their APIs are updated with each release of NetworkCalc. For details on changes, read the release notes.