Area Code and Exchange (509) 580 in Washington
Exchange Code 580 for Area Code 509 covers the city of Selah, Yakima County in the State of Washington. It is centered at N 46º 39' 14.46", W 120º 31' 48.24". This Exchange Code was introduced on 25 February 2008 and is designated as being used for Wireless telephones.
This Exchange covers telephone numbers ranging from (509) 580-0000 to (509) 580-9999.
In this Exchange Code there are 2 telephone numbers that our research shows belong to legitimate businesses.
Technical Information for Exchange (509) 580
NXX/Exchange Code: 580
Rate Center: SELAH
Time Zone: PST
Exchange Status: Active
NXX Intro Date: 25 February 2008
CBSA Code: 49420
Number Pooling: Yes
Number Pooling in Exchange (509) 580
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 509-580 and the following thousand blocks are currently assigned to carriers.