ICANN (the Internet Corporation for Assigned Names and Numbers) charges a mandatory annual fee of $0.18 for each year of domain registration, renewal or transfer. For example, the fee for a one-year .com registration will be $0.18 while it is $0.36 for a two-year .com registration.
This will be added to the listed price for some domains at the time of purchase. Check the list of these domains here.
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