All tools
Every tool is free, runs on European infrastructure and respects your privacy.
DNS Tools
(15)Query, validate and troubleshoot every kind of DNS record. Check worldwide propagation, inspect zones and verify your email authentication setup (SPF, DKIM, DMARC) from independent European infrastructure.
DNS Propagation Checker
Check DNS propagation across resolvers worldwide
Domain DNS Validation
Validate all DNS records of a domain
Authoritative DNS Lookup
Query a domain's authoritative name servers directly
Reverse IP Lookup
Resolve an IP address back to hostnames
DNS Lookup
See all DNS records of a domain
CNAME Lookup
CNAME records of a domain
NS Lookup
See NS records of a domain
MX Lookup
See mail (MX) records of a domain
SPF Record Checker
Look up and validate the SPF record of a domain
DMARC Checker
DMARC lookup & validation
Domain DNS Health Checker
Get a complete DNS health report
DMARC Record Generator
Generate a DMARC record for any domain
DNSKEY Lookup
Look up the DNSKEY record of any domain
DS Lookup
Look up the DS record of any domain
DKIM Checker
Check the DKIM record of a domain
IP Tools
(22)Everything around IP addresses: discover your public IP, geolocate any address, run ping and traceroute, check spam blacklists and convert between IPv4/IPv6 notations.
Ping IPv4
Send ICMP packets and ping an IPv4 host online
Ping IPv6
Send ICMP packets and ping an IPv6 host online
What Is My IP Address
Look up your own public IP address
Traceroute
Trace the complete route to an IP or domain
IP Location Lookup
See the real-time location of an IP
Trace Email (Header Analyzer)
Track the origin of an email from its headers
IP & Email Blacklist Check
Check an IP against 50+ DNSBL databases
IP to Decimal
Convert an IP address to its decimal form
IP to Hostname Lookup
Check the hostname behind an IP
IP WHOIS Lookup
Check who owns an IP address
IPv6 WHOIS Lookup
Check who owns an IPv6 address
IPv4 to IPv6 Converter
Convert an IPv4 address to IPv6 notation
Local IPv6 Address Generator
Generate a unique local IPv6 (ULA) prefix
IPv6 CIDR to Range
Convert an IPv6 CIDR to an address range
IPv6 Range to CIDR
Convert an IPv6 range to CIDR prefixes
IPv6 Compression
Compress a long IPv6 address
IPv6 Expand
Expand a shortened IPv6 address
IP Subnet Calculator
Calculate IPv4 and IPv6 subnets
IPv6 to IPv4 Converter
Convert an IPv6-mapped address to IPv4
IPv6 Compatibility Checker
Check if a domain supports IPv6
What Is My ISP
Find out who your internet provider is
Domain to IP Lookup
Find the IP address behind a domain
Dev Tools
(14)Small utilities developers reach for every day: HTTP header inspection, SMTP testing, hash generation, JSON formatting, redirect rules and link checking - no installation required.
HTTP Headers Check
Inspect the HTTP response headers of a URL
Website OS Check
Identify the operating system behind a website
MD5 & Base64 Generator
Create MD5, SHA and Base64 hashes online
Multi URL Opener
Open multiple URLs in new tabs at once
SMTP Test
Test an SMTP mail server online
.htaccess Redirect Generator
Generate Apache redirect rules
URL Rewrite Generator
Generate SEO-friendly URL rewrite rules
Broken Link Checker
Find and fix dead links on a page
Open Graph Checker
Preview and validate social media tags
RAID Calculator
Calculate usable capacity of RAID arrays
Binary Translator
Translate binary to text
Text to Binary
Translate text to binary
JSON Viewer, Beautifier & Minifier
View, format and minify JSON online
Email Verifier
Verify an email address without sending
Designer Tools
(4)Convert colors between RGB, HEX, CMYK and HSV color systems and preview matching color tones for web and print work.
Webmaster Tools
(6)Analyze and improve your website: link structure, search snippet previews, robots.txt rules, internationalized domain names and traffic-rank metrics.
Website Link Analyzer
Analyze internal and external links of a page
What Is My User Agent
See your browser's user agent string
Website Rank Checker
Check a domain's global traffic rank
Punycode Converter
Convert IDN domains to punycode and back
Google SERP Simulator
Preview your page in search results
Robots.txt Generator
Generate a robots.txt file instantly
Network Tools
(4)Network engineering helpers: scan open ports, identify hardware vendors by MAC address and look up autonomous system (ASN) ownership.
Cyber Security Tools
(4)Keep your services safe: audit TLS/SSL certificates, generate strong passwords and evaluate password strength - all processed locally where possible.
Productivity Tools
(20)Practical everyday utilities: QR codes, text counters and converters, online notepad, domain availability search, OCR and more.
QR Code Generator
Generate QR codes for URLs, text, WiFi and more
QR Scanner
Read QR codes with your webcam
Lorem Ipsum Generator
Generate placeholder text
Time Card Calculator
Calculate work hours per week
BIN Checker
Look up card BIN data
Credit Card Checker
Check if a card number is valid (Luhn)
Reverse Image Search
Find where an image appears online
Name Checker
Check username availability across platforms
Notepad Online
Free online text editor
Small Text Generator
Make tiny unicode font text
Word Counter
Count words and characters
Domain Name Search
Check domain name availability
ROT13 Encoder / Decoder
Encode and decode ROT13 text
Morse Code Translator
Translate text to Morse code and back
BIMI Checker & Generator
Check and generate BIMI records
Image to Text (OCR)
Extract text from images
Runic Translator
Translate text to runes
Invisible Character
Copy invisible unicode characters
Internet Speed Test
Test your connection speed
WiFi QR Scanner
Scan WiFi QR codes
Gaming Tools
(1)Handy references for gamers, starting with the complete Minecraft color and formatting code table.