Whois Master
Domain, DNS, SSL & IP Lookup
Free
Check any domain's registrar, expiry date, DNS records and SSL certificate in seconds. Now faster, with IPv6, dark mode and expiry warnings.
Whois Master is the fast, no-nonsense toolbox for anyone who works with domains, servers and networks. Look up who owns a domain, when it expires, where it points and whether its certificate is healthy — all from your iPhone, in seconds.
DOMAIN WHOIS
• Registrar, creation, update and expiry dates
• Days until expiry, with a warning when a domain is about to lapse
• Domain age at a glance
• Name servers and status codes
• Works with hundreds of extensions, including .com, .net, .org, .io, .co, .me, .dev, .app and country domains such as .tr and .co.uk
• International (IDN) domains supported
• Paste a full URL and it is trimmed to the domain for you
DNS LOOKUP
• A, AAAA, CNAME, MX, NS and TXT records
• Results grouped by record type and easy to scan
SSL CERTIFICATE CHECKER
• Valid, expiring or expired at a glance, with the reason when something is wrong
• Issuer, subject, validity period and days remaining
• TLS version, HSTS and signature algorithm
• All domains covered by the certificate
• Serial number and SHA-256 fingerprint
IP LOOKUP
• Your own public IP address, with one tap to copy
• Look up any IPv4 or IPv6 address
• Hostname, city, region, country, organization (ASN), postal code and time zone
• Location shown on a map
BUILT FOR DAILY USE
• Long-press any value to copy it
• Clear error messages when a registry does not respond
• Full dark mode support
• Clean, native iOS design
• No account, no sign-up
Whether you are a developer, system administrator, domain investor or just curious about a website, Whois Master gives you the answers without the clutter.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A big update, rebuilt from the ground up:
• New, faster lookup engine with support for many more domain extensions, including .tr, .io, .co and .me
• Domain Whois now shows days until expiry, domain age and last update, with a warning when a domain is about to expire
• SSL Certificate shows TLS version, HSTS, covered domains, signature algorithm and fingerprint, and explains why a certificate is invalid
• IP lookups now support IPv6, with a map pin, postal code and time zone
• DNS results are grouped by record type and cleaned up
• Paste a full URL — it is trimmed to the domain automatically
• Long-press any value to copy it
• Clear error messages and a Try Again button
• Full dark mode support and a refreshed, native iOS design
The developer, Emre Keles, 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
- Emre Keles
- Size
- 4.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.6 or later.
- iPhone
Requires iOS 15.6 or later. - iPad
Requires iPadOS 15.6 or later. - iPod touch
Requires iOS 15.6 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Turkish
- Age Rating
4+
- 4+
- Copyright
- © Emre KELES