Method of determining number state and device of determining number state

The embodiment of the present invention discloses a method of determining a number state and a device of determining the number state which relate to the communication technology field, and can improve the accuracy of querying whether a mobile phone number generates the 3G networking flow. The method of the embodiment of the present invention comprises the steps of using a server to obtain the corresponding first and second subscript values of a number in a first memory bitmap; using the server to obtain a character string according to the first and second subscript values; using the server to obtain the corresponding third and fourth subscript values of the character string in a second memory bitmap according to the character string; using the server to set a key value of the corresponding position of a third subscript value and the key value of the corresponding position of a fourth subscript value in the second memory bitmap according to a preset rule; and using the server to determine the state of the number according to a key value of the corresponding position of a first subscript value and a key value of the corresponding position of a second subscript value in the first memory bitmap, and the key value of the corresponding position of the third subscript value and the key value of the corresponding position of the fourth subscript value in the second memory bitmap. The present invention is suitable for determining the number state.