Deep Dig

Deep Dig is an advanced DNS lookup utility with DNS trace support and history. With it you can quickly lookup DNS records by simply specifying record types, custom servers, ports, and other options right in the query, like you do in the dig command line utility.

Category	Price	Seller	Device
Productivity	Free	Pavel Ahafonau	iPhone, iPad, iPod

For example, if you need to lookup domain name server records for paully.com domain from authoritative servers, then you can simply type in the following query:
paully.com ns +trace

FEATURES
· support for A, AAAA, ANY, CNAME, PTR, NS, MX, SOA, SRV records
· support for "-t type" option or just add record type into query
· support for "+trace" and "+all" options typed in query/hostname field
· support for custom DNS server and port via "-h host" and "-p port" options
· support for custom DNS server "@server:port" option typed in query
· support for DNS queries to local multicast IP addresses (automatically)
· support for querying Bonjour/mDNS servers
· support for querying LLMNR servers
· automatic reverse DNS (PTR) record lookup when you type in IPv4/IPv6 address
· automatic Geo IP country lookup on resolving an IP or domain name

MORE GREAT APPS
· Spyglass - augmented reality & GPS navigator
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Reviews

Works well, but becomes unresponsive when...
Life in Truth

The app works well, but hangs and none of the buttons work when I clear all the query results. Only way to get back to using again is to uninstall than reinstall.

Just what I needed
Mr Swaggins 42

Love that you can pass in normal dig arguments

One bug, one flaw
redmatter

Bug: Despite the screen shot on the App Store, the app does not rotate to landscape view on my 10.5” iPad Pro. Flaw: The ability to compare different dns queries is extremely valuable (accomplished by scrolling in Terminal.app on Mac OS). This app, and many like it, refresh the screen between queries making comparisons impossible (unless you commit the entire screen contents to memory between queries). The app functions, thus two stars as a minimum but it could be so much better.

linux DIG command , exactly what i was looking for!
jo2jo

this app is essentially perfect for what it does, gives you FULL access/use of the linux dig command for dns , on your iPhone. Thanks developer (his other network related apps are excellent too i use them as well)