ASAs and DNS

I don't mean to dodge the question... but if you're not in a campus environment and you just want to get to the internet, why not just use 4.2.2.2? It's been up forever and it's free.

I am using that as a DNS server.

I ALSO want to know how to get the DNS server received by my ASA from the ISP.

I manage several ASAs and would like to know if there is a show command that could help.

Thanks!

Try this. Ping www.google.com and see if you get this response

Translating "www.google.com"...domain server (192.168.0.1) [OK]

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 74.125.19.99, timeout is 2 seconds:

In this case the 192.168.0.1 is my dns server address.

From the ASA, it just says invalid hostname. I tried google.com and www.google.com