Colt Technology Services GmbH
Gervinusstraße 18-22, 60322 Frankfurt/Main, Deutschland
+491782658011
PR-Telecom
PR-Telecom Zrt.
3527 Miskolc, József Attila utca 45.
+36 46 508158
Swisscom
Swisscom (Switzerland) Ltd.
IP-Plus engineering, Postfach, CH-3050, Bern, Switzerland
+41-58-221-98