Swisscom
Swisscom (Switzerland) Ltd.
IP-Plus engineering, Postfach, CH-3050, Bern, Switzerland
+41-58-221-98
BT Global Europe
BT Global Europe B.V. Magyarországi Fióktelepe, H-1117 Budapest, Budafoki út 91-93.
+36 1 777 0144
DuoDecad
JWE SÀRL S.á.r.l (Docler Holding)
44, Avenue John F. Kennedy, L-1855 Luxembourg
+352 261 1181