Outils Réseau en Ligne Gratuits

IP lookup, DNS queries, WHOIS, HTTP headers, SSL checks, subnet calculators, and more networking utilities.

48+ outils gratuits disponibles
Outils Gratuits
100%
Basé sur Navigateur
30+
Données Envoyées
30+
Blog Guides
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🌍

IP Lookup

Find your IP address and geolocation info.

🔍

DNS Lookup

Query DNS records for any domain (A, AAAA, MX, TXT, NS).

📋

WHOIS Lookup

Look up domain registration and ownership details.

📡

HTTP Headers

View HTTP response headers for any URL.

🔒

SSL Checker

Check SSL/TLS certificate details for any domain.

🔌

Port Scanner

Check common port status for a given host.

📶

Ping/Speed Test

Test connection speed and latency to various servers.

🧮

Subnet Calculator

Calculate subnet masks, IP ranges, and CIDR notation.

🏭

MAC Address Lookup

Identify the manufacturer from a MAC address.

🖥️

User Agent Parser

Parse and analyze browser user agent strings.

🔐

Base64 Encoder

Encode and decode Base64 strings.

📊

CIDR Calculator

Calculate IP ranges from CIDR notation.

🌐

CORS Tester

Test CORS headers on any URL.

Cron Parser

Parse and explain cron expressions.

🔍

Domain Availability

Check if a domain name is available.

📧

Email Validator

Validate email address format and MX records.

📍

IP Geolocation

Find geographic location of any IP address.

🔑

JWT Decoder

Decode and inspect JSON Web Tokens.

Speed Test

Test your internet connection speed.

Website Status

Check if a website is up or down.

🌐

My IP

Find your public IP address and location instantly.

🔐

Password Generator

Generate strong, random passwords securely.

📋

HTTP Headers Checker

Check HTTP response headers of any website.

🌐 Network Status: All systems operational

Why NetTool1?

🔒

100% Private

All tools run in your browser. No data uploaded to servers.

Instant Results

No waiting, no loading. Process data in milliseconds.

💰

Free Forever

48 tools, zero cost. No signup, no limits, no ads blocking.

📱

Works Everywhere

Desktop, tablet, phone. Any modern browser, any device.

Derniers Articles

View all →

🌐 Complete Guide to IP Addresses

Everything you need to know about IPv4, IPv6, public vs private IPs, and how to find yours.

🔍 DNS Explained: How Domain Names Work

Learn how DNS resolves domain names, record types, and troubleshooting tips.

🔒 SSL/TLS Guide: Securing Your Website

Understand SSL certificates, HTTPS, and how to check your site's security.

🔑 Password Security Best Practices

Tips for creating strong passwords, using password managers, and staying safe online.

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About NetTool

NetTool (nettool1.com) is a free online tool suite offering 37 network and connectivity tools — IP lookup, DNS checker, port scanner, and more. All tools run entirely in your browser — no data is uploaded to any server, ensuring complete privacy. No registration or signup required.