The geographical origin of a telephone number with the prefix 423 can be identified. This area code primarily serves the southeastern region of Tennessee, encompassing cities such as Chattanooga, Cleveland, and the surrounding areas. Knowing this allows one to understand the general whereabouts of a caller or the business associated with that number.
Knowing the geographical association of a specific numbering plan area offers several advantages. Businesses can utilize this information for targeted marketing campaigns, tailoring their outreach to individuals within the relevant region. Furthermore, individuals may find it helpful for assessing the legitimacy of incoming calls and identifying potential sources of unsolicited communication. Historically, area codes were implemented to efficiently route calls across a growing telecommunications network, a function which indirectly provides geographic information even today.