nettools.me
Fast, free network diagnostic tools. Use them in your browser, via the API, or straight from your terminal.
Your IP Address
216.73.216.48
Columbus, Ohio, United States · Amazon.com, Inc.
curl nettools.me/ip
Give your AI assistant network superpowers
Connect Claude, Cursor, or any MCP-compatible AI to all 30 network tools. DNS lookups, port scans, SSL checks, and more — directly from your AI workflow.
DNS DNS & Domain
DNS Lookup
Query A, AAAA, MX, TXT, CNAME, NS records.
/api/dns?q=example.com
Reverse DNS
PTR record lookup for IP addresses.
/api/rdns?q=8.8.8.8
WHOIS
Domain registration info — registrar, dates, nameservers.
/api/whois?q=example.com
DNS Propagation
Check DNS records across global resolvers.
/api/dns-propagation?q=example.com
DNSSEC Validator
Check if a domain has DNSSEC properly configured.
/api/dnssec?domain=example.com
Subdomain Finder
Discover subdomains via certificate transparency logs.
/api/subdomains?q=example.com
SEC Security
SSL Certificate
Inspect SSL/TLS certs — expiry, issuer, chain.
/api/ssl?host=example.com
Security Headers
Check HTTP security headers and score them.
/api/security-headers?url=...
Email Security
Check SPF, DKIM, and DMARC records.
/api/email-security?domain=...
Blacklist Check
Check if an IP is on DNS blacklists.
/api/blacklist?ip=1.2.3.4
TLS Scanner
Check supported TLS versions and cipher suites.
/api/tls?host=example.com
Password Generator
Generate secure passwords with entropy analysis.
/password
NET Network
Ping
Measure round-trip time to a host.
/api/ping?host=example.com
Traceroute
Trace the network path to a destination.
/api/traceroute?host=example.com
Port Scanner
Check which ports are open on a host.
/api/ports?host=example.com
IP Geolocation
Find the geographic location of any IP.
/api/geoip?q=8.8.8.8
ASN Lookup
Look up AS number, name, and IP prefixes.
/api/asn?q=AS13335
Reverse IP
Find domains hosted on an IP address.
/api/reverse-ip?ip=1.2.3.4
MAC Lookup
Identify the vendor from a MAC address.
/api/mac?q=00:1A:2B:3C:4D:5E
Subnet Calculator
Calculate network ranges, broadcast, hosts.
/api/subnet?cidr=10.0.0.0/24
IP Converter
Convert IPs between decimal, hex, binary, octal.
/ip-convert
WEB Web
HTTP Headers
Inspect HTTP response headers of any URL.
/api/headers?url=https://...
Redirect Chain
Follow and display the full redirect chain.
/api/redirects?url=https://...
Website Speed Test
Measure response time, TTFB, and size.
/api/speed?url=https://...
CORS Tester
Test CORS policy with custom origins.
/api/cors?url=https://...
MCP Tester
Test Model Context Protocol servers.
/api/mcp?url=https://...
HTTP/2 & HTTP/3
Check modern protocol support.
/api/http-check?url=https://...
Uptime Check
Check if a site is up with response timing.
/api/uptime?url=https://...
Robots.txt Analyzer
Fetch and analyze a site's robots.txt.
/api/robots?url=example.com
Open Graph Preview
Preview how a URL appears when shared.
/api/og?url=https://...
User Agent Parser
Parse browser, OS, and device from UA strings.
/useragent
Compression Test
Test gzip, brotli, deflate, zstd support and savings.
/api/compression?q=https://...
v6 IPv6 & Utilities
IPv6 Tools
Analyze IPv6 addresses, AAAA lookup, ping6.
/api/ipv6/analyze?q=2001:db8::1
IPv6 Browser Test
Test your browser's IPv6 connectivity.
/ipv6/browser-test
JWT Decoder
Decode and inspect JSON Web Tokens.
/jwt
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes.
/hash
cURL Builder
Build cURL commands with a visual interface.
/curl-builder
Base64
Encode and decode Base64 strings and files.
/base64
URL Encoder
Encode and decode URL components.
/url-encode
JSON Formatter
Format, validate, and minify JSON.
/json
UUID Generator
Generate v4 UUIDs in bulk.
/uuid
Timestamp
Convert Unix timestamps to dates and back.
/timestamp
Regex Tester
Test regex patterns with live matching.
/regex
Cron Parser
Parse cron expressions and show next runs.
/cron