IBM (INTERNATIONAL BUSINESS MACHINES) TURK LTD STI
Buyukdere Caddesi Levent
Istanbul, 80613
Phone:90-212-3171000

IBM (INTERNATIONAL BUSINESS MACHINES) TURK LTD STI
YAPI KREDI PLAZA KAT.4 LEVENT
ISTANBUL,

IBM (INTERNATIONAL BUSINESS MACHINES) TURK LTD STI
S Ahmet Sok Mecidiyekoy Is Merkezi No 4/3
Istanbul, 80310
Phone:90-212-2886523
Fax:90-212-2756125

METEKSAN SISTEM VE BILGISAYAR TEKNOLOJILERI A S
Cayiryolu Sok. Ucgen Plaza No:7 Icerenkoy
ISTANBUL, 34752
Phone:216 5756672
Fax:216 5756676


KOC SISTEM BILGI VE ILETISIM HIZMETLERI A S
Unalan Mah. Ayazma Cad. Camlica Is Merkezi B3-Blok Uskudar
Istanbul, 81190
Phone:90 216 5561100
Fax:90 216 5561188

ORANGE BUSINESS SERVICES
Nispetiye Cad. Akmerkez E3 Blok Kat 5 Etiler
Istanbul, 34337
Phone:90 212 385 3500
Fax:90 212 282 1001