Area Code and Exchange (509) 633 in Washington
Exchange Code 633 for Area Code 509 covers the city of Coulee Dam, Okanogan County in the State of Washington. It is centered at N 47º 57' 55.55", W 118º 58' 34.08". This Exchange Code was introduced on 4 February 1994 and is designated as being used for Landline telephones.
This Exchange covers telephone numbers ranging from (509) 633-0000 to (509) 633-9999.
In this Exchange Code there are 41 telephone numbers that our research shows belong to legitimate businesses.
Technical Information for Exchange (509) 633
NXX/Exchange Code: 633
City: Coulee Dam
Rate Center: COULEE DAM
Time Zone: PST
Exchange Status: Active
NXX Intro Date: 4 February 1994
Number Pooling: Yes
Number Pooling in Exchange (509) 633
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 509-633 and the following thousand blocks are currently assigned to carriers.
Businesses and other Entities in Exchange (509) 633 157
Below are details of all of the legitimate businesses and other entities that we have identified within this Exchange Code.