All sites need to have this information recorded somewhere. Whether you are directly editing your site, or someone else is, the owner should always have this information in a secure location. (All of the italicized text is just there as an example.)

Download the blank form

Site Address: ___________________________________________________
www.mysite.com

Host: ___________________________________________________
i.e. godaddy or dreamhost, etc.

IP: ___________________________________________________
123.123.123.123 OR ftp.mysite.com (this is for the actual site)

DNS: ___________________________________________________
ns16.webmasters.com (this is for the Domain name only)

User Name(s): ___________________________________________________
Indicate whether for site host or domain or both

Password(s): ___________________________________________________
Indicate whether for site host or domain or both

Expiration
Date(s): ___________________________________________________
Indicate whether for site host or domain or both. If purchased separately, there will be different expiration dates.