Custom

AUXDATA 2
URL: https://uscg.experience.crmforce.mil/auxcommunity/login
Username: your member number followed by "@uscg.aux".  For example, 50111@uscg.aux
Password:  unique to AuxData 2 because there is personal information. So it will be different 

National Testing Center 
URL: http://ntc2.cgaux.org/NTC/ then click on the box that says "Sign up/In with USCGAUX"
Username: member number
Password: member zone password

Coast Guard Exchange (for uniforms)
URL: https://shopcgx.com/ 
Username: email address
Password: unique to this site