Web services, hosting & DevOps

Tools for the people who keep sites running

Subnets, cron, tokens, DNS records, redirects — the small tools we use every day, running right in your browser. And data on how popular sites are hosted.

Tools Services

~/subnet-calculator

IP address / prefix

Split into subnets of /

Runs locally — nothing is uploaded

Result

Nothing yet — enter data or press Example.

Cron expression parser JWT decoder Unix timestamp converter Number base converter HTTP status codes MIME types list Regex tester Hash generator Base64 encoder/decoder

18 tools

Free tools

No sign-up. Everything runs right in your browser.

All

Subnet calculatorCIDR, netmask, host range and subnets Cron expression parserExplain cron schedules and see the next runs JWT decoderDecode JWT header, payload and expiry Unix timestamp converterEpoch time to date, and date to epoch Number base converterBinary, octal, decimal, hex and base 36 HTTP status codesSearchable list of all HTTP status codes MIME types listFind the Content-Type for a file extension Regex testerTest regular expressions with live highlighting Hash generatorMD5, SHA-1, SHA-256/384/512 and CRC-32

Global

Data

Measured by our crawler, refreshed continuously.

All

Hosting & cloud 36%IPv6 (AAAA record)58%CDN HTTPS & certificates 98%HTTPS homepage85%HTTP → HTTPS redirect HTTP & compression 35%HTTP/3 advertised36%Brotli compression Security headers 53%HSTS29%Content-Security-Policy DNS 8.7%DNSSEC13%CAA record Email authentication 76%SPF record64%DMARC record

Global in numbers68,769 sites · Global · updated 23 Oct 2026

89%

TLS 1.3

35%

HTTP/3 advertised

53%

HSTS

36%

IPv6 (AAAA record)

Services

DevOps services

Hosting, monitoring and hardening.

All

DevOps CI/CD, containers and infrastructure as code. CI/CD pipelinesDocker and orchestrationInfrastructure as code Details Hosting migration Move sites and servers with zero downtime. InventoryNew environmentData sync Details Performance tuning Faster pages: caching, images, scripts, servers. Core Web Vitals auditImage and font optimizationScript diet Details Monitoring setup Uptime, certificates, errors and performance — alerts before users notice. Uptime checksSSL and domain expiryError tracking Details Security hardening Headers, TLS, email authentication and server configuration done right. Security headersTLS configurationSPF/DKIM/DMARC Details CDN setup Faster and safer delivery with a CDN — caching, compression, HTTP/3. CDN selectionCaching rulesBrotli and HTTP/3 Details

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