G-Core
2A, rue Albert Borschette, L1246
Luxembourg, tax VAT ID: LU26701717
n.a.y.
Swisscom
Swisscom (Switzerland) Ltd.
IP-Plus engineering, Postfach, CH-3050, Bern, Switzerland
+41-58-221-98
3C Telecom
3C Magyarország Kft.
H-1121 Budapest, Konkoly Thege út 29-33.
+36 1 275-5200, +36 1 491-0900