CHECKNET / CONTROL CENTRE
Network diagnostics.
Inspect a target. Trace the details. Get a clearer view of your network.
TOOLS
Run a diagnostic
01 / TARGETChoose a tool and enter the target to investigate.
QUICK ACCESS / Check your public IP
Diagnostic map
TOOL SHORTCUTSFind a tool or inspect a value
Tools. Choose a diagnostic to start its lookup.
Browser intelligence
Explore your browser’s fingerprint, privacy signals, and capabilities.
Inspect browserCertificate inspection
Inspect a site’s TLS certificate, issuer, and expiry before you connect.
Check a certificateGlobal DNS propagation
Check how a domain resolves across DNS servers around the world.
Explore propagationDiagnostic toolkit
24 utilities for network, domain, and security analysis.
DNSSEC & CAANEW
Inspect DNSSEC authentication and certificate issuance policy.
Lookalike DomainsNEW
Find active DNS for domain typos and homoglyphs.
Domain ReportNEW
Review domain health and recommended configuration improvements.
ASN & BGP ExplorerNEW
Explore network announcements, peers and RPKI observations.
Speed TestNEW
Measure download, upload and TCP latency with M-Lab.
MAC Vendor LookupNEW
Identify vendor prefixes and randomized MAC addresses locally.
Email Header AnalyzerNEW
Inspect delivery hops and authentication claims in your browser.
Check IP
Find information about any IP address.
WHOIS
Retrieve WHOIS information for domains.
DNS
Get DNS records for any domain.
Browser CheckNEW
See what your browser reveals about itself.
SSL Certificate
Check SSL/TLS certificates and validity.
HTTP Headers
Inspect HTTP response headers and security.
Redirect ChainNEW
Trace redirects and measure request timing.
DNS Propagation
Check DNS propagation across global servers.
Email SecurityNEW
Grade SPF, DMARC, MTA-STS and other email records.
Subnet Calculator
Calculate subnet details from CIDR notation.
URL Parser
Parse URLs and encode/decode strings.
Blacklist Checker
Check if an IP or domain is blacklisted.
JWT DecoderNEW
Decode JSON Web Tokens and verify their signatures.
Regex Generator
Generate regex patterns for provided strings.
AI Model TrackerNEW
Compare recent AI model launches, API prices and benchmarks.
Ping
Ping a site and display its information.
Service Status
Check status of major services like Google, Facebook, OpenAI.
Command-line access
Plain-text output. No API key required.
$ curl https://checknet.uk/txt/checkip