For technical support or billing and account enquiries, please log into Colt Online and raise a ticket.
Alternatively, you can contact your local support team via phone or email. Details can be found in the table below.
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
You can manage your orders, services and tickets, quickly and easily online via Colt Online.
Visit Colt Online »
Colt Online is not currently available for customers in Asia.*
United Kingdom
Technical Support
0800 358 3999 / +44 207 862 6087
TechnicalSupport.UK@colt.net
Billing and account enquiries
0800 358 3999 / +44 207 862 6087
CustomerServiceEnquiries@colt.net
Australia
Asia service desk
+1 800 064 854
Asia-ServiceDesk@colt.net
Austria
Technical Support
0800 880 990 / + 43 1 253 07 02
TechnicalSupport.AT@colt.net
Billing and account enquiries
0800 880 990 / + 43 1 253 07 02
CustomerServiceEnquiries@colt.net
Belgium
Technical Support
0800 507 01 / +32 2 790 16 29
TechnicalSupport.BE@colt.net
Billing and account enquiries
0800 507 01 / + 32 2 790 16 29
CustomerServiceEnquiries@colt.net
China (North)
Asia service desk
+86 10 800 852 1053
Asia-ServiceDesk@colt.net
China (South)
Asia service desk
+86 10 800 152 1053
Asia-ServiceDesk@colt.net
Denmark
Technical Support
+ 45 70 71 25 99
TechnicalSupport.DK@colt.net
Billing and account enquiries
+ 45 70 71 25 99
CustomerServiceEnquiries@colt.net
France
Technical Support
0800 948 888 / +33 1 709 95 600
TechnicalSupport.FR@colt.net
Billing and account enquiries
0800 948 888 / +33 1 709 95 600
CustomerServiceEnquiries@colt.net
Germany
Technical Support
0800 182 2233 / +49 69 56606 9000
TechnicalSupport.DE@colt.net
Billing and account enquiries
0800 182 2233 / +49 69 56606 9000
CustomerServiceEnquiries@colt.net
Hong Kong
Asia service desk
+852 800 903 246
Asia-ServiceDesk@colt.net
Indonesia
Asia service desk
+62 001 803 852 9359
Asia-ServiceDesk@colt.net
Ireland
Technical Support
1800 944 040 / +353 01 536 9312
TechnicalSupport.IE@colt.net
Billing and account enquiries
1800 944 040 / +353 01 536 9312
CustomerServiceEnquiries@colt.net
Italy
Technology Customer Service
192 090 / +39 0289634895 (From abroad only)
TechnicalSupport.IT@colt.net
Billing and account enquiries
192 090 / +39 0289634895(From abroad only)
CustomerServiceEnquiries@colt.net
Japan
Asia service desk
0120 525 135 (Toll Free) / +81 03 5617 2342
Asia-ServiceDesk@colt.net
Korea
Asia service desk
+82 00798 8521 9360
Asia-ServiceDesk@colt.net
Malaysia
Asia service desk
+60 1 800 805 988
Asia-ServiceDesk@colt.net
Netherlands
Technical Support
0800 265 8023 / +31 20 798 0000
TechnicalSupport.NL@colt.net
Billing and account enquiries
0800 265 8023 / +31 20 798 0000
CustomerServiceEnquiries@colt.net
New Zealand
Asia service desk
+64 0800 77 0037
Asia-ServiceDesk@colt.net
Portugal
Technical Support
808 780 222 / +35 1 211 202 795
TechnicalSupport.PT@colt.net
Billing and account enquiries
808 780 222 / +35 1 211 202 795
CustomerServiceEnquiries@colt.net
Singapore
Asia service desk
+65 800 852 3528
Asia-ServiceDesk@colt.net
Spain
Technical Support
901 888400 / +34 91 7887520
TechnicalSupport.ES@colt.net
Billing and account enquiries
901 888400 / +34 91 7887520
CustomerServiceEnquiries@colt.net
Sweden
Technical Support
+46 8781 8383
TechnicalSupport.SE@colt.net
Billing and account enquiries
+46 8781 8383
CustomerServiceEnquiries@colt.net
Switzerland
Technical Support
0800 560 560 / +41 58 560 1720
TechnicalSupport.CH@colt.net
Billing and account enquiries
0800 560 560 / +41 58 560 1720
CustomerServiceEnquiries@colt.net
Taiwan
Asia service desk
+886 00801 855 942
Asia-ServiceDesk@colt.net
USA
Technical Support
+1 877 803 7917
TechnicalSupport.UK@colt.net
Billing and account enquiries
+1 877 803 7917
CustomerServiceEnquiries@colt.net