Server Tools
35 tools available
Check the health, identity, and configuration of servers of all kinds. Ping Minecraft, Counter-Strike, SA-MP, and FiveM game servers for status and player counts, inspect HTTP status codes, headers, and raw requests, build and validate curl commands, and identify the software behind a web server or check its clock offset. On the domain side, look up WHOIS and RDAP records, check domain age, expiration, and availability, verify TLS certificates or generate a self-signed one, resolve DNS records, validate SPF/DKIM/DMARC, robots.txt, sitemaps, and hreflang tags. You can also check a page's JSON-LD structured data and Open Graph tags, and see whether a hostname is on the StevenBlack, EasyList, or HaGeZi blocklists.
Build CURL requests.
Validate and parse CURL commands.
Explore HTTP status codes and their meanings.
Resolve IPv4 and IPv6 addresses for a domain using fixed server-side DNS providers.
Validate URLs against robots.txt rules. Check if a URL is allowed or disallowed for specific user-agents, view crawl delays, and find sitemap references.
Generate self-signed SSL/TLS certificates for local development and testing. Create X.509 certificates with customizable validity, key size, and subject details.
Analyze and inspect X.509 SSL/TLS certificates. View certificate details including subject, issuer, validity period, extensions, key usage, and fingerprints.
Validate HTTP response and request headers against RFC standards. Check for syntax errors, deprecated headers, missing security headers, and common misconfigurations.
Validate and parse raw HTTP request text with detailed request metadata.
Validate sitemap XML files. Checks structure, namespace, URL format, lastmod dates, changefreq values, and priority ranges.
Look up WHOIS and RDAP registration data for any domain, including registrar, registrant, nameservers, and expiry date.
Check the status of a Minecraft Java Edition server: MOTD, version, protocol, online and max players, and server icon.
Check the status of a Counter-Strike 1.6 server: name, current map, online players, bots, server type, VAC status, and connected player list.
Check the status of a San Andreas Multiplayer (SA-MP) server: hostname, gamemode, language, online players, password protection, connected player list, and server rules.
Check the status of a GTA 5 FiveM server, including player count, game type, map, resources, and connected players.
Measure the clock offset and round-trip time between your browser and a server using sequential timed requests.
Check how old a domain name is by looking up its WHOIS registration date. See the exact age in years, months, and days, along with registrar and expiry details.
Check when a domain name will expire, including days remaining, registrar, and registration dates.
Check whether a domain name is available to register or already taken. Runs a live WHOIS lookup and shows registrar, creation, and expiry details when the domain is registered.
Identify the web server software running on a host via a GET request to its index page.
Enter a website URL and the server fetches and validates its robots.txt, showing sitemaps, crawl delay, and preferred host.
Preview how a URL will look when shared on Facebook, Twitter/X, LinkedIn and other platforms by inspecting its Open Graph and Twitter Card meta tags.
Fetch a page and check its hreflang tags for missing x-default, invalid language codes, duplicates, and self-referencing errors.
Connect to a host and port to inspect its TLS/SSL certificate — expiry, trust status, full chain, protocol, and cipher suite.
Look up RDAP registration data for any domain, including registrar, registrant, nameservers, and expiry date.
Validate a domain's SPF, DKIM, and DMARC DNS records to check email authentication and spot misconfigurations.
Send HTTP requests from your browser and inspect the response, like a lightweight Postman or curl. Set the method, query parameters, headers, JSON or form body, and bearer or basic auth, then see the status, timing, headers, and formatted body. Paste a curl command to import it.
Enter a URL and the server fetches the page, extracts every JSON-LD structured data block, and checks it for JSON syntax errors, missing @context and @type, unknown schema.org types and properties, and fields Google needs for rich results.
Check whether a hostname or website is on the StevenBlack hosts blocklist, the full list with adware, malware, fake news, gambling, porn, and social media domains.
Check whether a hostname or website is blocked by HaGeZi's Multi ULTIMATE DNS blocklist, the largest tier with ads, trackers, telemetry, phishing, malware, and scams, and see which entry blocks it.
Check whether a hostname or website is blocked or targeted by EasyList, EasyPrivacy, and Fanboy's Annoyance List, and see every filter that blocks it, hides elements on it, or allows it.
See how far a website or IP address is from you on a map. The tool resolves the domain's IP addresses over DNS, geolocates each server, and shows the distance and the theoretical minimum ping from your location.
Find the autonomous system number (ASN) of any IPv4 or IPv6 address. See the AS name, the organization that runs the network, the BGP prefix the address is routed in, and the registry, country, and dates of both.
Check where a URL redirects. See every hop of the redirect chain with its status code, such as 301, 302, 307, or 308, its IP address, and its response time, and find redirect loops and the final URL. Up to 10 redirects are followed.
Find the subdomains of a domain using DNS records. The tool reads the domain's NS, MX, SOA, SRV, and SPF records and checks 350 common names like www, mail, api, and dev, then lists each subdomain with its IP addresses and CNAME target. Wildcard records are detected.