tel, iwhois - look in phone book
SYNOPSIStel key ...
Tel looks up key in a private telephone book, $home/lib/tel, and in the
public telephone book, /lib/tel. It uses grep (with the -i option to
ignore case differences), so the key may be any part of a name or num‐
ber. Customarily, the telephone book contains names, userids, home
numbers, and office numbers of users. It also contains a directory of
area codes and miscellaneous people of general interest.
Iwhois looks up names in the Internet NIC's personnel database. Name
should be a surname optionally followed by a comma and given name. A
different server can be chosen by appending to the name an @ followed
by the server's domain name.
Telephone area codes database.
Public telephone number database.
Personal telephone number database.