An electronic device includes a communication processor; a processor connected to the communication processor; and a memory connected to the processor and the communication processor. The memory stores a domain name system (DNS) table, first instructions that, when executed, cause the processor to: generate a first DNS query message including a domain address based on execution of a networking service; and deliver the first DNS query message to the communication processor, and second instructions that, when executed, cause the communication processor to update the DNS table by periodically receiving a first DNS response message including an IP address corresponding to the domain address, as a response to the first DNS query message, delivering the first DNS response message to the processor; transmitting a second DNS query message including the domain address to the network, and receiving a second DNS response message, as a response to the second DNS query message.