The subscriber database is an ordinary text file consisting of lines of the form
lastname, firstname (na.key) email-address
These lines are sorted lexicographically by lastname then firstname.
The format of the Whitepages Database is as follows:
The fields are, in order:
last name first name middle name other name affiliation office address city_state_zip country office phone research home address home phone fax email address other date -- preferably in rfc 822 format added by -- email address of whoever added the record