Unify email, SMS, and WhatsApp in a single platform
Query your domain name across multiple global DNS resolvers, run a comprehensive email deliverability audit covering SPF, DKIM, and DMARC parameters, and instantly map every single subdomain ever issued an SSL certificate. Every report delivers clear, plain-English explanations inside a single streamlined interface.
Enter any domain name below to query active DNS records across different public resolvers, evaluate your structural email authentication, and track down hidden subdomains. Every process listed below runs directly against live, real-world public data sets.
The Domain Name System acts as the functional address directory for the modern internet. When a customer types a domain name into a web browser address bar or sends a digital message to an inbox, deep DNS records guide their local software directly to your host servers. A dedicated DNS Propagation Checker queries these data records openly.
Users never need to provide a login username or private account password because the global DNS infrastructure remains entirely public data by design.
Many technical diagnostic platforms simply spit out a confusing wall of raw configuration data. This specific application goes much deeper.
The software explains exactly what each individual record means for your business, checks whether your outbound email is configured correctly to avoid junk folders, and identifies every single subdomain that has ever surfaced inside public SSL certificate logs.
The system operates inside your local internet browser using free public APIs, pulling data directly from Google DNS-over-HTTPS, Cloudflare systems, and public Certificate Transparency archives.
This utility assists anyone responsible for maintaining a web domain, supervising corporate inboxes, or protecting a commercial sending reputation.
Analyze SPF configurations, DKIM keys, and DMARC policies with a single click. Straightforward, plain-English diagnostic verdicts show you precisely how to fix problems when marketing campaigns land in the spam folder.
Confirm your custom domain's DNS points to the correct web host, verify transactional order emails possess proper security authentication, and ensure your storefront functions perfectly for customers.
Spot immediate cache discrepancies across competing public resolver networks, verify live propagation status across regions, and validate sensitive DNS changes before minor layout errors break active web services.
Map out a target organization's complete digital attack surface in seconds. The system reveals every subdomain that has ever appeared inside public Certificate Transparency logs, including your properties or external corporate targets.
Verify that fresh DNS adjustments are completely live after you deploy a new website asset. Compare exactly what distinct public resolvers see in real time. If Google registers the updated IP address but Cloudflare still displays legacy data, your global propagation process is simply mid-flight.
Triage frustrating user tickets that claim a corporate website is completely down. Run a comprehensive DNS check in seconds to determine if domain routing is the actual root problem or merely a secondary symptom of a server outage.
Type your target domain name into the input field. You do not need to own the underlying web property because DNS information is entirely public data. The tool requires no user signup, no paid API keys, and no software installations.
The top informational card shows whether your domain resolves successfully, confirms if email servers feature proper authentication, and checks if global networks agree on the values. Click on any individual category to open the comprehensive data breakdown.
Discovered technical issues appear with helpful, plain-English explanations. A warning message stating your DMARC policy is currently in monitoring mode identifies the exact setting, while the description explains why the issue threatens deliverability and how to adjust your policy.
DNS configurations dictate exactly where your business website loads from, where your corporate messages travel, and whether receiving email networks believe your outbound letters are authentic.
A single broken text record can drop your website offline or send major marketing campaigns directly to junk folders, and most business operators only discover the structural damage after losing revenue.
Without valid SPF, DKIM, and DMARC configurations protecting your domain, security filters reroute outbound messages to spam folders or drop them entirely. Top mail networks like Gmail and Yahoo consistently enforce rigid authentication mandates for bulk senders.
A missing or weak DMARC policy allows malicious actors to forge fraudulent emails that look identical to official messages from your company. Protecting your long-term brand reputation requires locking down these specific security records.
When your team edits an authoritative DNS record, the updated value spreads across different global resolver networks slowly. Running a multi-resolver comparison shows you exactly when technical modifications become active across the web.
