Swisscom
Swisscom (Switzerland) Ltd.
IP-Plus engineering, Postfach, CH-3050, Bern, Switzerland
+41-58-221-98
Romtelecom
Piata Presei Libere nr. 3-5, cladirea City Gate, Turn Nord, sector 1
n.a.
Macronet
Macronet System Kft.
6500 Baja Radnóti M. u. 2.
n.a.