Area Code and Exchange (920) 587 in Wisconsin
Exchange Code 587 for Area Code 920 covers the city of Oostburg, Sheboygan County in the State of Wisconsin. It is centered at N 43º 37' 21.99", W 87º 47' 40.32". This Exchange Code was introduced on 28 February 2003 and is designated as being used for Landline telephones.
This Exchange covers telephone numbers ranging from (920) 587-0000 to (920) 587-9999.
Technical Information for Exchange (920) 587
NXX/Exchange Code: 587
Rate Center: OOSTBURG
Time Zone: CST
Exchange Status: Active
NXX Intro Date: 28 February 2003
CBSA Code: 43100
Number Pooling: Yes
Number Pooling in Exchange (920) 587
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 920-587 and the following thousand blocks are currently assigned to carriers.