Probe Toolkit

DNS Lookup

Look up any DNS record type for a domain.

WHOIS Lookup

Look up domain registration and ownership details.

Reverse DNS Lookup

Look up the hostname associated with any IP address.

Nameserver Lookup

Look up the authoritative nameservers for any domain.

DNS Propagation Checker

Check DNS propagation across multiple global DNS servers.

What Is My IP

Instantly see your public IP address, location, and ISP.

IP Geolocation

Geolocate any IP address — see country, city, ISP, and more.

Subnet Calculator

Calculate network addresses, broadcast, host ranges, and CIDR notation.

Bandwidth Calculator

Convert bandwidth units and estimate file transfer times.

MTU Calculator

Calculate maximum payload size and overhead for any MTU.

Reverse IP Lookup

Find all domains hosted on the same IP address.

BGP/ASN Lookup

Look up BGP autonomous system information for any IP or ASN.

CIDR Calculator

Expand CIDR blocks into IP ranges and split into smaller subnets.

MX Record Checker

Look up mail exchange (MX) records for any domain.

Email Header Analyzer

Parse and analyze raw email headers to trace delivery path.

SPF/DKIM/DMARC Checker

Validate SPF, DKIM, and DMARC records for any domain.

Email Blacklist Checker

Check if an IP address is listed on email blacklists.

SSL Certificate Checker

Check SSL certificate details, expiry, and chain for any domain.

HTTP Header Inspector

Inspect HTTP response headers for any URL.

Redirect Tracer

Follow and visualize the full HTTP redirect chain for any URL.

Meta Tag Analyzer

Analyze meta tags, Open Graph, and Twitter Card data for any URL.

Robots.txt Tester

Fetch and test robots.txt rules for any website.

Sitemap Validator

Validate XML sitemaps and check for common issues.

User Agent Parser

Parse any user agent string to identify browser, OS, and device.

Password Generator

Generate strong, random passwords with customizable options.

Base64 Encode/Decode

Encode or decode Base64 strings instantly.

URL Encode/Decode

Encode or decode URLs and query strings.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.

CSP Analyzer

Analyze Content Security Policy headers for any URL.

JWT Decoder

Decode and inspect JSON Web Tokens (JWT) instantly.

JSON Formatter

Format, validate, and beautify JSON data.

HTTP Status Codes

Complete reference of HTTP status codes with descriptions.

Epoch Converter

Convert Unix timestamps to human-readable dates and back.

Regex Tester

Test regular expressions with real-time matching and explanation.

Cron Expression Builder

Build and decode cron schedule expressions visually.

MAC Address Lookup

Identify the vendor/manufacturer for any MAC address.

JSON/YAML/XML Converter

Convert between JSON, YAML, and XML formats instantly.

Color Converter

Convert colors between HEX, RGB, and HSL formats.

Lorem Ipsum Generator

Generate placeholder text for designs and mockups.

Markdown Preview

Write Markdown and see a live rendered preview.

Diff Checker

Compare two blocks of text and see the differences highlighted.

QR Code Generator

Generate QR codes for URLs, text, WiFi, and more.