What are the traffic limits on dedicated servers and what happens if these limits are exceeded?

Monthly limit of free traffic on dedicated servers:

The traffic is unlimited on the dedicated servers residing in Germany and Finland.

What happens if the traffic limit is exceeded?

You will be charged for the traffic exceeding the traffic limit. Payment for the additional traffic should be made no later than 3 days after the invoice date.

The amount of additional traffic is rounded up to 1 TB, e.g. 2 TB + 100 MB = 3 TB, 2 TB + 1.1 TB = 4 TB.