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GCN's Central Office - Sofia

Address: 46, Kiril i Metodii Str., Sofia 1202, Bulgaria
Telephone: +359.2.4200042, FAX: +359.2.983.6826
E-mail: gcn@gcn.bg

NOC (National Operation Center)

Address:245, Slivnica Blvd., Sofia 1202, Bulgaria
Mobile Phone: +359.882.960.028, Telephone: +359.2.420.0888
Fax: +359.2.931.7341, E-mail : noc@gcn.bg