Check a domain. Debug a connection. Simplify your workflow.
Sixty focused tools, all in one place.
Compare DNS answers across public resolvers.
Find configuration issues in your DNS records.
Find the hostname associated with an IP.
Inspect the DNS records behind a domain.
Follow a domain’s canonical name records.
Find the nameservers responsible for a domain.
Find mail servers and delivery priorities.
Inspect sender policies and lookup limits.
Check email policy, alignment and reporting.
Review DNS and email configuration together.
Create a DMARC record with guided settings.
Inspect the public keys used by DNSSEC.
Look up delegation signer records.
Look up a domain’s email signing key.
Periksa catatan DNS sebuah domain secara instan.
Lihat alamat IP publik Anda, atau periksa IP mana pun.
Measure reachability and latency over IPv4.
Measure reachability and latency over IPv6.
See your connection’s public IP address.
Inspect network hops to an IP or domain.
Look up the approximate location of an IP.
Inspect mail routing and authentication.
Check an address against DNS blocklists.
Convert an IP address to an integer.
Resolve reverse DNS for an IP address.
Find allocation and registration information.
Inspect registration details for IPv6.
Create an IPv4-mapped IPv6 representation.
Generate a random unique local IPv6 prefix.
Calculate an IPv6 network’s boundaries.
Represent an IPv6 range as CIDR blocks.
Shorten IPv6 addresses into canonical notation.
Expand all eight groups of an IPv6 address.
Calculate network ranges and host capacity.
Extract IPv4 from a mapped IPv6 address.
Check IPv6 DNS and connectivity signals.
Identify the network behind your connection.
Resolve a domain’s IPv4 and IPv6 addresses.
Inspect response headers and redirects.
Inspect the server signals a website exposes.
Hash or encode text in your browser.
Prepare and open a list of website URLs.
Inspect mail server connectivity and capabilities.
Generate Apache redirect rules.
Create rules for clean URL patterns.
Find unreachable links on a web page.
Inspect social metadata and generate tags.
Estimate usable storage and fault tolerance.
Decode binary bytes into UTF-8 text.
Encode UTF-8 text as binary bytes.
Validate, beautify and minify JSON.
Check syntax and domain delivery signals.
Inspect internal links, external links and anchors.
Inspect browser and display information.
Check authoritative rank availability.
Convert international domain names to ASCII.
Preview a page title and search description.
Generate crawler and sitemap directives.
Periksa apakah sertifikat SSL sebuah domain valid dan tepercaya.
Periksa apakah sebuah port TCP terbuka pada host tertentu.
Check whether a public TCP port accepts connections.
Find the registered vendor for a MAC prefix.
Generate locally administered unicast addresses.
Find autonomous system registration information.
Local calculations stay in your browser. Network checks show their source and limitations.