English
InfoSpace International reverse directory
Yahoo People Search
AnyWho with directory of toll-free numbers. Lucent and Etak
WhoWhere? E-mail Addresses
BigBook
Toll-free numbers 800- and 888-

German
Teleauskunft (formerly Telefonbuch) from Deutsche Telekom. Multilingual.
AVON Amtliches Verzeichnis der Ortsnetzkennzahlen (German telephone prefixes)
suchen.de e-mail Verzeichnis