Network address server

• US 7,280,999 B2
• Filed: 05/28/2002
• Issued: 10/09/2007
• Est. Priority Date: 11/26/1999
• Status: Expired due to Term

• Current Assignee: Afilias PLC.
• Original Assignee: Neteka Incorporated
• Inventors: Leung, David, Chung, Edmon
• Primary Examiner(s): Vincent; David
• Assistant Examiner(s): Chang; Sunray
• Application Number:
  US10/155,225
• Publication Number:
  US 20030005157A1
• Time in Patent Office: 1,960 Days
• Field of Search: 707/2, 712/27, 709243-245, 709223-227, 709204-206, 709/217, 709/200
• US Class Current: 1/1
• CPC Class Codes: H04L 2101/32 containing non-Latin characters, e.g. Chinese domain names
• CPC Class Codes: H04L 61/30 Managing network names, e.g. use of aliases or nicknames name-to-address mapping H04L61/45
• CPC Class Codes: H04L 61/4552 Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories
• CPC Class Codes: Y10S 707/99932 Access augmentation or optimizing

Abstract

A network address server is configured to resolve a target network address name label with a network address, with the target address name label defining a branch of one level of a multi-level network address name space. The network address server is one of a plurality of network address servers each being uniquely associated with a respective region of the address name space level. The network server includes an address name database, and an address name processor in communication with the address name database for providing a response to a query for the network address corresponding to the target address name label. The address name database includes a number of database records, each identifying a unique address name label and a network address uniquely associated with the address name label. The address name processor includes a correlation processor, a correlation transceiver in communication with the correlation processor, and a response processor in communication with the correlation processor and the correlation transceiver. The correlation processor is configured to determine a correlation between the target address name label and the respective unique address name region. The correlation transceiver is configured to provide the other network address servers with a respective indication of the determined correlation and for receiving a corresponding correlation indication from at least one of the other network address servers. The response processor is configured to provide a response to the query in accordance with the correlation indications.

Claims

1. A network address server for resolving a target domain name label with a network address in response to a query, the network address server being one of a plurality of network address servers, each being associated with a common name space level of a multi-level network address name space, the network address server comprising:

an address name database associated with a subset of address names of the common name space level, the address name database including a plurality of database records, each said database record including an address name label and a network address uniquely associated with the address name label; and

an address name processor in communication with the address name database, the address name processor including;

a correlation processor for determining a correlation between the target domain name label and the subset of the address names of the common name space level,

a correlation transceiver configured to communicate with a correlation processor of at least one of the other network address servers, for receiving an indication of a correlation from the at least one other network address server, and

a response processor in communication with the correlation processor and the correlation transceiver, for providing an output signal corresponding to a response to the query in accordance with the determined correlation.

2. The network address server according to claim 1, wherein the address name database includes for each said database record a hash code derived from a hashing function uniquely associating the derived hash code with the corresponding address name label.

3. The network address server according to claim 2, wherein the correlation processor comprises a hash code processor for encoding the target domain name label with the hashing function, and a search engine in communication with the correlation processor for querying the hashed database records with the hash domain name label.

4. The network address server according to claim 1, wherein each said database record includes at least one record character having a record character set type, and a record character set identifier identifying the record character set type.

5. The network address server according to claim 1, wherein a subset of the address names of the common name space level comprises Big5 address names.

6. The network address server according to claim 1, wherein a subset of the address names of the common name space level comprises Unicode address names.

7. The network address server according to claim 1, wherein a subset of the address names of the common name space level comprises UTF-8 address names.

8. The network address server according to claim 1, wherein a subset of the address names of the common name space level comprises ASCII address names.

9. A method for resolving a target domain name label with a network address in a multi-level network address name space, the method comprising the steps of:

receiving at a first network address server a query for the network address corresponding to the target domain name label, the first network address server being one of a plurality of network address servers each being associated with a common name space level of the network address name space, the network address servers each defining a subset of address names of the common name space level, each address server including a plurality of database records, each said database record including an address name label and a network address uniquely associated with the address name label;

at the first network address server, determining a correlation between the received target domain name label and the corresponding subset of address names of the common name space level;

at the first network address server, receiving an indication of a correlation from at least one of the other network address servers; and

at the first network address server, providing an output signal corresponding to a response to the query in accordance with the determined correlations.

10. The method according to claim 9, wherein each said network address server has a correlation response time, and the first network address server has a shortest one of the correlation response times.

11. The method according to claim 9, wherein the database records each include at least one record character having a record character set type, and a record character set identifier identifying the record character set type, the target domain name label includes at least one address name character having an address name character set type, and an address name character set identifier identifying the address name character set type, and the step of determining a correlation comprises the steps of querying the respective database records with the received address name label, and obtaining a correlation of the at least one address name character and the associated address name character set identifier with each said at least one record character and the associated record character set identifier.

12. The method according to claim 11, wherein the database records are encoded with a hashing function, and the step of obtaining a correlation comprises the steps of encoding the target address name label with the hashing function, and querying the hashed database records with the hashed address name label.

13. The method according to claim 9, wherein a subset of the address names of the common name space level comprises Big5 address names.

14. The method according to claim 9, wherein a subset of the address names of the common name space level comprises Unicode address names.

15. The method according to claim 9, wherein a subset of the address names of the common name space level comprises UTF-8 address names.

16. The method according to claim 9, wherein a subset of the address names of the common name space level comprises ASCII address names.

17. A method for resolving network domain names comprising the steps of:

providing a plurality of network address servers for mapping a hierarchical network address name space, the hierarchical address name space having a plurality of levels, each said network address server being associated with at least one other of said network address servers and a common name space level of the network address name space, each said network address server including database records defining a subset of address names of the associated common name space level, each said database record including an address name label and a network address uniquely associated with the address name label;

receiving at one of the network address servers a target domain name for resolving, the target domain name comprising a plurality of address name labels, each said address name label being associated with one of the subset of address names of a respective one of the common name space levels; and

for each said address label, querying the plurality of network address servers defining the one common name space level.

18. The method according to claim 17, wherein the step of receiving the network address comprises the steps of:

at each said queried network address server, determining a correlation between the queried address name label and the respective defined address name space subset;

providing other ones of the queried network address servers with an indication of the correlation and receiving correlation indications from the other queried network address servers; and

transmitting a response to the query in accordance with the correlation indications.

19. The method according to claim 18, wherein each said queried network address server has a correlation indication response time, and the step of transmitting a response comprises transmitting the response from the queried network address server having a shortest one of the correlation indication response times.

20. The method according to claim 18, wherein the database records each include at least one record character having a record character set type, and a record character set identifier identifying the record character set type, the queried address name label includes at least one address name character having an address name character set type, and an address name character set identifier identifying the address name character set type, and the correlation determining step comprises the steps of receiving the queried address name label, and querying the respective database records with the at least one address name character and the associated address name character set identifier for obtaining a respective correlation with each said at least one record character and the associated record character set identifier.

21. The method according to claim 20, wherein the database records are encoded with a hashing function, and the step of querying the respective database records comprises the steps of encoding with the hashing function each queried address name label, and querying the hashed database records with the hashed address name labels.

22. Computer network apparatus for resolving a domain name with a network address, comprising:

a first network address server storing a first address name database, the first address name database comprising (i) a first plurality of domain names for a computer network domain, and (ii) a plurality of network addresses respectively corresponding to the first plurality of domain names, the first plurality of domain names corresponding to an ASCII character set;

the first network address server including a first address name processor configured to provide a reply when a received inquiry requests a domain name resident in the first address name database;

a second network address server in communication with said first network address server and storing a second address name database, the second address name database comprising (i) a second plurality of domain names for the computer network domain, and (ii) a plurality of network addresses respectively corresponding to the second plurality of domain names, the second plurality of domain names corresponding to a non ASCII character set; and

the second network address server including a second address name processor configured to provide a reply when the received inquiry requests a domain name resident in the second address name database.