Public DNS servers

What are some of the public DNS servers addresses that I can use with my Digi Products?

Public DNS Servers
  
Level 3 Communications (Broomfield, CO, US)
4.2.2.1
4.2.2.2
4.2.2.3
4.2.2.4
4.2.2.5
4.2.2.6
Google (Mountain View, CA, US)
 

Verizon (Reston, VA, US)
151.197.0.38
151.197.0.39
151.202.0.84
151.202.0.85
151.202.0.85
151.203.0.84
151.203.0.85
199.45.32.37
199.45.32.38
199.45.32.40
199.45.32.43
 
GTE (Irving, TX, US)
192.76.85.133
206.124.64.1
 
One Connect IP (Albuquerque, NM, US)
67.138.54.100
 
OpenDNS (San Francisco, CA, US)
208.67.222.222
208.67.220.220
 
VRx Network Services (New York, NY, US)
199.166.31.3
 
 
 
 
 
 
 
 
 
 
 
SpeakEasy (Seattle, WA, US)
66.93.87.2
216.231.41.2
216.254.95.2
64.81.45.2
64.81.111.2
64.81.127.2
64.81.79.2
64.81.159.2
66.92.64.2
66.92.224.2
66.92.159.2
64.81.79.2
64.81.159.2
64.81.127.2
64.81.45.2
216.27.175.2
66.92.159.2
66.93.87.2
 
 
 
Sprintlink (Overland Park, KS, US)
199.2.252.10
204.97.212.10
204.117.214.10
 
Cisco (San Jose, CA, US)
64.102.255.44
128.107.241.185