Contact us

The world's leading cloud native communications software company

London, UK

UK headquarters

100 Church Street
Enfield
EN2 6BQ
UK

Tel: +44 20 8366 1177
Fax: +44 20 8363 1468

Los Altos, CA

USA headquarters

399 Main Street
Los Altos
CA 94022

Tel: +1 415 513-1500
Fax: +1 415 513-1501

Alameda, CA

USA 

1751 Harbor Bay Parkway, Suite 125
Alameda
CA 94502

Tel: +1 415 513-1500
Fax: +1 415 513-1501

Reston, VA

USA 

11600 Sunrise Valley Drive
Suite 380
Reston
VA 20191

Tel: +1 703 480 0500
Fax: +1 703 480 0499
AP/AR and US tax correspondence should be sent to this office

Frisco, TX

USA 

2801 Network Blvd
Suite 810
Frisco
TX 75034

Tel: +1 214 572 7800
Fax: +1 214 575 9007

Melbourne

Australia

Level 10, Tower 4, World Trade Centre
611 Flinders Street
Melbourne
Victoria 3005
Australia

Tel: +61 3 8630 2927
Fax: +61 3 8630 2800

Wellington

New Zealand

Level 5, Sovereign House
34 Manners Street
Te Aro
Wellington
New Zealand 6011

Tel:+64 21 495 597

Mexico City

Mexico

Edificio Terret
Blvd. Miguel de Cervantes Saavedra 301
Torre Sur. Piso 14
Col. Granada
Mexico City 11520

Tel: +1 510 217 1361

Hong Kong

China

Lee Garden One
33 Hysan Avenue
Causeway Bay
Hong Kong

Singapore

1 Fullerton Road #02-01
One Fullerton
Singapore 049213
Tel: +65 6408 3900