VoIP Call Routing Information Registry including Hash Access Mechanism

Logic encoded in one or more tangible media, for execution and when executed operable to:

• receive a telephone number;
• compute a hash of the telephone number;
• access a registry wherein the registry comprises a plurality of entries, and wherein each entry comprises a hash of a telephone number and data associated with that telephone number, or a prefix and data associated with that prefix;
• search the registry for a matching entry;
• and
• until a matching entry is found or the telephone number has been stripped down to a minimum number of digits, strip the last digit of the telephone number, re-compute a hash of the stripped-down telephone number, and re-search the registry for a matching entry.

An apparatus, comprising

• one or more network interfaces;
• a memory;
• one or more processors;
• and
• a call agent application physically stored in the memory comprising computer-readable instructions operative to cause the one or more processors to:
• receive a telephone number;
• compute a hash of the telephone number;
• access a registry wherein the registry comprises a plurality of entries, and wherein each entry comprises a hash of a telephone number and data associated with that telephone number, or a prefix and data associated with that prefix;
• search the registry for a matching entry;
• and
• until a matching entry is found or the telephone number has been stripped down to a minimum number of digits, strip the last digit of the telephone number, re-compute a hash of the stripped-down telephone number, and re-search the registry for a matching entry.