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, raising tickets and viewing orders.
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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
Technical Support
0800 358 3999 / +44 207 862 6087
TechnicalSupport.UK@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
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
Technical Support
0800 880 990 / + 43 1 253 07 02
TechnicalSupport.AT@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
Technical Support
0800 507 01 / +32 2 790 16 29
TechnicalSupport.BE@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
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
Asia service desk
+86 10 800 152 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
Technical Support
+ 45 70 71 25 99
TechnicalSupport.DK@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
Technical Support
0800 948 888 / +33 1 709 95 600
TechnicalSupport.FR@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
Technical Support
0800 182 2233 / +49 69 56606 9000
TechnicalSupport.DE@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
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
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
Technical Support
1800 944 040 / +353 1 536 9312
TechnicalSupport.IE@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
Technology Customer Service
192 090 / +39 0289634895 (From abroad only)
TechnicalSupport.IT@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
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
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
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
Technical Support
0800 265 8023 / +31 20 798 0000
TechnicalSupport.NL@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
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
Technical Support
808 780 222 / +35 1 211 202 795
TechnicalSupport.PT@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
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
Technical Support
901 888400 / +34 91 7887520
TechnicalSupport.ES@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
Technical Support
+46 8781 8383
TechnicalSupport.SE@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
Technical Support
0800 560 560 / +41 58 560 1720
TechnicalSupport.CH@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net
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
Technical Support
+1 646 517 8398 / +1 877 803 7917 (Toll Free)
TechnicalSupport.UK@colt.net
Billing and account enquiries
CustomerServiceEnquiries@colt.net