Patent ID: 8964761
Filing Date: 2015-02-24
Classification: H04L

Abstract:
1. A method for notifying server address-change information by a second Domain Name System (DNS), the method comprising: providing a first Domain Name System (DNS) among a plurality of DNS's with server address information corresponding to a domain requested by the first DNS; recording, in the second DNS, a network address of the first DNS in a notification list, corresponding to the domain or the server address information; and transmitting in real-time, by the second DNS, server address-change information to the first DNS and to every DNS among the plurality of DNS's that previously requested the server address information corresponding to the domain, wherein at least one DNS other than the first DNS previously requested server address information corresponding to the domain, wherein the transmitting of the server address-change information is accomplished by referring to the notification list, upon the server address information of the domain changing, and time-to-live (TTL) value information is not required to transmit the address-change information.