ISC DNS Checker 4+

Internet Systems Consortium, Inc.

Designed for iPad

    • 3.0 • 1 Rating
    • Free



Deployment of important new DNS features such as DNSSEC relies on end users having access to DNS resolvers which behave correctly per the specifications.

This app, from ISC Research, tests recursive DNS servers for conformance against current DNS protocol specifications, especially with regard to EDNS(0) as specified in RFC 6891.

The app can automatically detect the DNS servers automatically discovered by your iOS device, or you can enter IP addresses to be tested manually. Both IPv4 and IPv6 are supported.

Please send comments and questions to (email list subscription required)

What’s New

Version 0.15

Bug fixes for iOS 13

Ratings and Reviews

3.0 out of 5
1 Rating

1 Rating

SysComet ,

Breaks on iOS 13

This is a good utility, very handy for those cases where you need it. But it’s broken on iOS 13, crashing on start-up.

App Privacy

The developer, Internet Systems Consortium, Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

More By This Developer

You Might Also Like

Purple Haze: DNS Tunnel
Best NetTools
Server monitor, SSL-DNS-Whois?
Network Kit - TCP UDP debugger