QSL servers
QRZ QSL SERVER
BUCKMASTER QSL SERVER
WF5E DX QSL SERVICE
OFFICIAL CANADIAN CALLBOOK
WA5YKO QSL INFO
NFDXA QSL INFO, DX, CONTEST, DXPEDITIONS
DL5MO CALLBOOK QSL
GUERNSEY AMATEUR RADIO. CALLBOOK
GERMAN CALLBOOK
RUSIAN HOME PAGE - QSL BUREAU
EGYPT CALLBOOK
GERMAN CALLBOOK by DL5MO
TAMPA CALLBOOK SERVER
Callsign Server at U. Arkansas, Little Rock
DXCC SERVER WA5YKO
DB0SDX QSL INFO Packet Cluster
K4UTE QSL VIA
QSL INFO DK0TUI
KO4KS US CALLBOOK
Pacific - ORARI WWW Callbook
CIS callsign database
ES-Callbook Online (Up-To-Date)
QSL INFO BY IK4LZH
ARAS Canadian Callbook
Finnish Callbook 1997
One-by-One callsign database
LX Callbook
SARL South African Callbook
Belgian ON-line Callbook
QSL Info - over 43000 QSL Managers/Direct addresses
Finland
"THE SOURCE" for QSL Manager Routes
QSL MIR
Russian QSL Information
SM5ARL QSL information
WM7D's Callsign Database