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Tele-Communication (Telecom) Terms Glossary and Dictionary
958 Number
958 number is testing prefix number in the dialing plan structure NPA-NXX-XXXX where NPA stands for the area code and NXX stands for the Prefix. This means that the prefix number 958 is reserved only for testing purpose and will not be available for customers. 958 numbers (NPA-958-XXXX) are reserved for general testing, while 959 numbers (NPA-959-XXXX) are reserved for inter-exchange carrier testing.
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