A common illustration of a telephone contact format within the Dallas area comprises a sequence of ten digits. This sequence typically begins with a three-digit area code, such as 214, 469, or 972, followed by a three-digit central office code, and culminates in a four-digit line number. For instance, a functional instance might appear as 214-555-1212.
Understanding the structural elements of a regional contact facilitates efficient communication and resource allocation. The area code identifies the geographic region, permitting proper routing of calls. The subsequent digits designate the specific carrier switch and subscriber line within that area. This format is essential for businesses to establish a local presence and for individuals to easily connect with entities within the city. Historically, this system evolved to accommodate the expanding telecommunications infrastructure and increasing demand for phone lines.