OTRS AG - Headquarters
Norsk-Data-Str. 1
61352 Bad Homburg
Germany

Tel:  +49 6172 681988 0
Fax:  +49 9421 56818 18 

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OTRS AG
Europaring 4
94315 Straubing
Germany

OTRS B.V.
Schipholweg 103
2316 XC Leiden
The Netherlands

Tel: +31 71 8200255
Fax: +31 71 8200254

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OTRS Inc.
19925 Stevens Creek Blvd.
Cupertino, CA 95014-2358
USA

Tel: +1 (408) 725 7501
Fax: +1 408 725 8885

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OTRS S.A. de C.V.
Oso 127 - 105
Col. Del Valle
03100 Mexico, D.F.
Mexico

Tel:+52 55 5524 3171

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OTRS Lab, S.A. de C.V.
Parque de Software, Módulo A1, Circuito Norte 100
Parque Industrial Zapotlan 2000
49000 Ciudad Guzmán, Jalisco
Mexico

OTRS Sdn. Bhd.
17-1B, Jalan Puteri 2/7
Bandar Puteri
47100 Puchong, Selangor
Malaysia

Tel: + 603 8065 3323

OTRS Ltd.
Rm 406, 4/F
Boss Commercial Centre
28 Ferry Street, Jordon
Kowloon
Hong Kong

Tel: + 852 3690 1503