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