Domain Checker: DNS & SSL
Local-First DNS & SSL Sentinel
About
This app provides comprehensive domain diagnostics for developers and administrators. It offers quick analysis of DNS records, SSL certificates, HTTP responses, WHOIS information, and email security configurations from a single interface.
What's New in Domain Checker
1.7
October 16, 2026
1. Introduced PRO diagnostics: Multi-resolver DNS comparison, DNSSEC trust chain analysis, domain lifecycle insights, and security hygiene audits. 2. Upgraded PDF exports with dedicated Basic and PRO professional diagnostic reports. 3. Added Notification Center with granular alert preferences for streamlined monitoring. 4. Added inline domain editing and automatic domain prefill when launching PRO tools from details. 5. Improved purchase restoration, cloud entitlement synchronization, and live telemetry displays. 6. Refined the deep sapphire interface, control workflows, and multilingual localization with stability enhancements.
MoreSubscriptions & In-App Purchases
$4.99
Domain Inspector Plus 50
domaininspector.plus50
Developer apps
FAQ
What is Domain Checker?
Domain Checker is a diagnostic tool that helps developers and administrators analyze domain infrastructure. It provides insights into DNS records, SSL certificates, HTTP responses, WHOIS information, and email security configurations.
What types of DNS records can Domain Checker inspect?
Domain Checker can inspect common DNS records including A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA records. This helps verify domain resolution and service availability.
What information does Domain Checker provide about SSL certificates?
Domain Checker analyzes HTTPS certificates for issuer, validity period, expiration countdown, Subject Alternative Names (SAN), and fingerprint. This helps identify potential expiration risks.
Can Domain Checker check website availability?
Yes, Domain Checker performs HTTP response analysis to check website availability. It provides HTTP status codes, response headers, redirect chains, and server information to troubleshoot accessibility issues.
What WHOIS information is available through Domain Checker?
Domain Checker displays public WHOIS domain registration information such as the registrar, registration date, expiration date, domain status, and name servers. This helps understand domain ownership and lifecycle.
Does Domain Checker offer email security checks?
Yes, Domain Checker analyzes domain email-related DNS configurations, including MX, SPF, and DMARC records. This helps identify email security configuration issues and improve domain reliability.
Is Domain Checker available on multiple devices?
Based on the provided data, Domain Checker is supported on iPhone and iPad devices.
What is the age rating for Domain Checker?
Domain Checker has an age rating of 4+, making it suitable for a wide range of users.
