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Use Colt Online for the quickest way to get support. You can:

  • Obtain service information and raise tickets for technical support
  • Update billing details and raise account enquiries
  • Track and manage orders
  • New: Services contracted in Japan, Singapore, Hong Kong and South Korea can now be managed with Colt online. Features include; checking planned works and raising tickets.

Login to Colt Online » Learn more about Colt Online »


Alternative support options

Details on other ways to contact us can be found in each country from the list. Please ensure that you have the following information available:

  • For existing incidents - your incident (ticket) number
  • For technical enquiries - your circuit reference number, order number or service ID
  • For invoice or order enquiries - your OCN (customer) number

United Kingdom

Australia

Asia service desk
+1 800 064 854 (Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Austria

Belgium

China (North)

Asia service desk
+86 10 800 852 1053 (Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

China (South)

Asia service desk
+86 10 800 852 1053 (Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Denmark

France

Germany

Hong Kong

Technical Customer Service
800 903 246 (Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Indonesia

Asia service desk
+62 001 803 852 9359(Toll free) /+81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Ireland

Italy

Technology Customer Service
192 090 / +39 0289634895 (From abroad only)
TechnicalSupport.IT@colt.net

Billing and account enquiries
CustomerServiceEnquiries@colt.net

Japan

Asia service desk
0120 525 135 (Toll free) / +81 03 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Korea

Asia service desk
+82 00798 8521 9360 (Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Malaysia

Asia service desk
+60 1 800 805 988(Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

New Zealand

Asia service desk
+64 0800 77 0037(Toll free) /+81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Portugal

Singapore

Asia service desk
+65 800 852 3528 (Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

Spain

Sweden

Switzerland

Taiwan

Asia service desk
+886 00801 855 942 (Toll free) / +81 3 5617 2342 (Direct)
Asia-ServiceDesk@colt.net

Billing and account enquiries
Asia-Invoice@colt.net

Colt Online enquires
Asia-Coltonline@colt.net

USA