Contact Us

Email (Sales):

Email (Support):

Seattle (Global Headquarters)

Tel (Toll-free from US): 1 877 277-2801

Fax: +1 (206) 447-0669

OpenMarket Inc.
2211 Elliott Avenue, Suite 400
Seattle, WA 98121


Tel (Toll-free from US): 1 877 277 2801

Tel (Int): +1 (248) 286 2800

Fax: +1 (734) 527-6124

OpenMarket Inc.
27777 Franklin Road, Suite 1545
Southfield, MI 48034


Tel: 0845 666 7778 (Int: +44 20 8987 8855)

OpenMarket Ltd
15th Floor
389 Chiswick High Road
W4 4AJ

Visiting us:

We are situated in the BSI Building on Chiswick High Road in Chiswick, West London. [map]

By public transport:

We are immediately next to Gunnersbury station on the District Line, about 30 minutes from central London by Tube. Gunnersbury station is also served by the London Overground.

Further public transport advice is available from the Transport for London Journey Planner.

By car:

If you will be arriving by car, please let us know the make and registration number (24 hours in advance if possible) so we can ensure you are allocated a parking space by building security.


Tel: +61 2 9332 2141

+61 2 8007 0406

OpenMarket Pty Ltd
704/14 Kings Cross Road
Potts Point
NSW 2011

Visiting us:

Here is a map of our office location.

By public transport:

Take the Eastern Suburbs and Illawarra Line to Kings Cross train station. We are situated just around the corner from Darlinghurst Road on Kings Cross Road.

Public transport information is available from the Sydney Transport Infoline.

MX Telecom Limited is a company registered in England and Wales with Company Registration Number 04009908 and VAT Registration Number 757049606