Method and apparatus for expedited domain name system query resolution
In one embodiment, a method and apparatus for resolving domain name system queries using unique top-level domains in a private network space are disclosed. For example, the method determines that a domain name service query specifies a destination residing in a private network space rather than in a public Internet space. The method then routes the domain name service query to a top-level domain name service server associated with the private network space, without routing the domain name service query to a root domain name service server in the public Internet space. The top-level domain name system server resides in the highest level of a hierarchy of domain name system servers belonging to the private network space.
1. A method comprising:
receiving, via a processor, a domain name system query that specifies a domain name of a destination residing in a private network space, wherein the private network space is part of an internet protocol multimedia subsystem network; and
routing, via the processor, the domain name system query to a top-level domain name system server associated with the private network space, without routing the domain name system query to a server in a public Internet space, wherein the top-level domain name system server resides in a highest level of a hierarchy of domain name system servers belonging to the private network space.
2. The method of claim 1 , wherein the destination is an interrogating call session control function element of the internet protocol multimedia subsystem network.
3. The method of claim 1 , wherein the destination is a serving call session control function element of the internet protocol multimedia subsystem network.
4. The method of claim 1 , wherein the private network space is a private multiprotocol label switching space.
5. The method of claim 1 , wherein the destination is part of a subdomain that provides a voice over long term evolution service.
6. The method of claim 1 , wherein the destination is part of a subdomain that provides a carrier voice over internet protocol service.
7. The method of claim 1 , wherein the destination is part of a subdomain that provides an internet imaging protocol service.
8. The method of claim 1 , wherein the destination is part of a subdomain that provides a web real-time communication service.
9. A non-transitory computer-readable storage device storing a plurality of instructions which, when executed by a processor, cause the processor to perform operations, the operations comprising:
receiving a domain name system query that specifies a domain name of a destination residing in a private network space, wherein the private network space is part of an internet protocol multimedia subsystem network; and
routing the domain name service query to a top-level domain name service server associated with the private network space, without routing the domain name system query to a server in a public Internet space.
10. The non-transitory computer-readable storage device of claim 9 , wherein the destination is an interrogating call session control function element of the internet protocol multimedia subsystem network.
11. The non-transitory computer-readable storage device of claim 9 , wherein the destination is a serving call session control function element of the internet protocol multimedia subsystem network.
12. The non-transitory computer-readable storage device of claim 9 , wherein the private network space is a private multiprotocol label switching space.
13. The non-transitory computer-readable storage device of claim 9 , wherein the destination is part of a subdomain that provides a voice over long term evolution service.
14. The non-transitory computer-readable storage device of claim 9 , wherein the destination is part of a subdomain that provides a carrier voice over internet protocol service.
15. The non-transitory computer-readable storage device of claim 9 , wherein the destination is part of a subdomain that provides an internet imaging protocol service.
16. The non-transitory computer-readable storage device of claim 9 , wherein the destination is part of a subdomain that provides a web real-time communication service.
17. An apparatus comprising:
a processor; and
a computer-readable storage device storing a plurality of instructions which, when executed by the processor, cause the processor to perform operations, the operations comprising:
receiving a domain name system query that specifies a domain name of a destination residing in a private network space, wherein the private network space is part of an internet protocol multimedia subsystem network; and
routing the domain name service query to a top-level domain name service server associated with the private network space, without routing the domain name system query to a server in a public Internet space.
18. The apparatus of claim 17 , wherein the destination is an interrogating call session control function element of the internet protocol multimedia subsystem network.
19. The apparatus of claim 17 , wherein the destination is a serving call session control function element of the internet protocol multimedia subsystem network.
20. The apparatus of claim 17 , wherein the private network space is a private multiprotocol label switching space.