Domain Checker: DNS & SSL
Local-First DNS & SSL Sentinel
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Proactive domain sentinel: monitor DNS records, TLS chains, and RDAP expiry. Detect dangling CNAMEs, track infrastructure drifts, and glance at live Home Screen widgets.
Domain Checker brings DNS, SSL/TLS, HTTPS, registration data, and email security checks into one local-first workspace for developers, sysadmins, and network engineers.
LOCAL-FIRST ARCHITECTURE
• 100% local capacity available: domains and checks stay on your device
• Fast manual or automated refresh with offline backup and restore
• Full access to standard diagnostics without cloud dependencies
OPTIONAL CLOUD MONITORING
• Automatic 24/7 background checks with instant outage and expiry alerts
• Standard tier includes 50% cloud concurrency; PRO unlocks full 100%
• Opt-in per domain anytime; zero automatic uploads
CORE PROTOCOL DIAGNOSTICS
• DNS: A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA records
• TLS: Certificates, full trust chains, expiration, SANs, and cipher suites
• HTTPS: Status codes, redirect chains, latency, and reachability
• WHOIS / RDAP: Registrars, status flags, and expiry timelines
• Email Security: MX routing, SPF validation, and DMARC policies
PRO ADVANCED SUITE (ONE-TIME PURCHASE)
• Anycast DNS Propagation: Compare answers and TTLs across global public resolvers
• DNSSEC Trust Chain: Verify DS, DNSKEY, and RRSIG signature validity
• Lifecycle Planning: Sync expiration dates to Apple Calendar and Reminders
• Security Hygiene: Detect dangling CNAME takeovers and wildcard DNS drifts
• Full Cloud Concurrency: Maximize 100% cloud monitoring across all slots
• Exportable PDF Reports: A4 diagnostic summaries and remediation priorities
BUILT FOR iOS & iPadOS
• Deep sapphire theme optimized for night-shift operations
• Home Screen and Lock Screen widgets for at-a-glance fleet status
• Localized in 9 languages
Terms: https://domain.opshome.run/terms/
Privacy: https://domain.opshome.run/privacy/
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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.
The developer, 超 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 超 张
- Size
- 9.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Domain Inspector Plus 50 $4.99
- Domain Inspector Starter 10 $1.99
- Domain Inspector PRO $7.99
- +2 Domain Slots $0.00
- Domain Inspector Pro+ 500 $19.99
- Domain Inspector Pro 100 $8.99
- Copyright
- © 2026 Zhang Chao