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Tool category

Security & Network Checks

Explore Security & Network Checks tools designed for focused online tasks. Compare related utilities, review each tool's inputs and examples, and choose the option that matches your workflow.

Available tools

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Showing 10 of 10 tools in this category.

EFeatured

Email Validator

Check email address syntax, normalize the domain and explain the limits of offline mailbox validation.

Security & Network ChecksOpen tool
PFeatured

Password Strength Checker

Estimate password strength from length, character diversity and common weak patterns without storing the password.

Security & Network ChecksOpen tool
MFeatured

MAC Address Validator

Validate and normalize common MAC address formats and identify unicast or multicast administration flags.

Security & Network ChecksOpen tool
IFree tool

IPv6 Validator

Validate an IPv6 address and display compressed, expanded and high-level address-type information.

Security & Network ChecksOpen tool
CFree tool

CIDR Range Calculator

Calculate IPv4 network, broadcast, address range, subnet mask and host capacity from CIDR notation.

Security & Network ChecksOpen tool
PFree tool

Port Number Lookup

Identify common services and the IANA-style range for a TCP or UDP port number.

Security & Network ChecksOpen tool
DFree tool

DNS Record Parser

Parse common zone-file record lines into name, TTL, class, type and value columns.

Security & Network ChecksOpen tool
JFree tool

JWT Expiry Checker

Decode JWT time claims and report expiry or activation status without claiming signature verification.

Security & Network ChecksOpen tool
UFree tool

URL Safety Checker

Perform an offline structural review of a URL for schemes, credentials, private addresses, Punycode and unusual encoding.

Security & Network ChecksOpen tool