A method of operating an electronic device may include: detecting a first input with respect to a first domain name. The method may also include detecting a second input with respect to a second domain name within a designated interval after the first input is detected. The method may further include storing the second domain name as a domain name associated with the first domain name in a storage unit included in the electronic device. The method may additionally include transmitting a message for requesting information on an address corresponding to the first domain name and a message for requesting information on an address corresponding to the second domain name to a domain name system (DNS) server in response to detection of a third input with respect to the first domain name.