International origination to domestic termination call blocking

A device for preventing fraud in a call from an international origin point to a domestic terminating point through a long distance telecommunications system, comprising:

• an international database for maintaining at least one record, each record associated with an international origin point, and each record having a label field;
• means for determining if a label associated with said call matches one or more labels in the label field of an international database record, when said international database record is accessed during call processing of said call, the international origin point of said call being associated with said international database record;
• and
• means for blocking the call if it is determined that the label associated with said call matches the one or more labels in the label field of the international database record.

A method for preventing fraud in a special service call from an international origin point to a domestic terminating point through a long distance telecommunications system, said call having a country code corresponding to the international origin point, and a location number in North American Numbering Plan (NANP) format NPA-NXX-XXXX corresponding to the domestic terminating point, comprising the steps of:

• a) retrieving a record keyed to the country code from an international database;
• b) determining if at least one blocked number is listed in a blocked exchange field of the retrieved country code record;
• c) determining if the at least one blocked number listed in the blocked exchange field of the retrieved country code record matches the beginning digits of the NANP location number corresponding to the domestic terminating point of said call, if it is determined that a number is listed in step (b);
• and
• d) blocking said call if a match is found in step (c).

A device for preventing fraud in a special service call from an international origin point to a domestic terminating point through a long distance telecommunications system, said call having a country code corresponding to the international origin point, and a location number in North American Numbering Plan (NANP) format NPA-NXX-XXXX corresponding to the domestic terminating point, comprising:

• an international database for maintaining records, each record keyed to a country code, each record having a blocked exchange field;
• a means for retrieving an international database record of a country code during call processing of said call, said country code being the country code corresponding to the international origin point;
• a first means for determining if at least one blocked number is listed in the blocked exchange field of the retrieved international database record;
• a second means for determining if the at least one blocked number listed in the blocked exchange field of the retrieved international database record matches the beginning digits of the NANP location number corresponding to the domestic terminating point of said call, if the first determining means determines that at least one blocked number is listed in the blocked exchange field of the retrieved international database record, and
• a means for blocking said call if the second determining means determines there is a match.