Area Code and Exchange (715) 640 in Wisconsin
Exchange Code 640 for Area Code 715 covers the city of Centuria, Polk County in the State of Wisconsin. It is centered at N 45º 27' 4.85", W 92º 33' 14.73". This Exchange Code was introduced on 30 June 2001 and is designated as being used for Landline telephones.
This Exchange covers telephone numbers ranging from (715) 640-0000 to (715) 640-9999.
Technical Information for Exchange (715) 640
NXX/Exchange Code: 640
Rate Center: CENTURIA
Time Zone: CST
Exchange Status: Active
NXX Intro Date: 30 June 2001
Number Pooling: Yes
Number Pooling in Exchange (715) 640
The initial set up of an Exchange was to have all 10,000 numbers (0000 - 9999) for a particular Rate Center allocated to the same local exhange carrier. With the advent of multiple carriers, allocating each one of them their own Exchange Code would be inefficient and soon use up the available number pools for a particular area. To counter this, some exchanges are split into blocks of 1,000 numbers, which can each be allocated to individual carriers. This cuts down on wasted numbers that aren't allocated as each carrier has a smaller pool available.Number Pooling is activated in Exchange 715-640 and the following thousand blocks are currently assigned to carriers.