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Area Code and Exchange (509) 404 in Washington

Exchange Code 404 for Area Code 509 covers the city of Dayton, Columbia County in the State of Washington. It is centered at N 46º 19' 25.51", W 117º 58' 20.77". This Exchange Code was introduced on 15 January 2015 and is designated as being used for Landline telephones.

This Exchange covers telephone numbers ranging from (509) 404-0000 to (509) 404-9999.

In this Exchange Code there are 1 telephone numbers that have been the subject of complaints to the FCC.

Technical Information for Exchange (509) 404

NPA/Area Code: 509
NXX/Exchange Code: 404
City: Dayton
County: Columbia
State: Washington
Rate Center: DAYTON
OCN: 7575
Time Zone: PST
DST Observed:
Exchange Status: Active
NXX Use Type: Landline
NXX Intro Date: 15 January 2015
Latitude: 46.3237525
Longitude: -117.9724367
New NPA:
LATA: 676
FIPS: 53013
CBSA Code:
Number Pooling: Yes


Number Pooling in Exchange (509) 404

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 509-404 and the following thousand blocks are currently assigned to carriers.

Telephone numbers subject to FCC Complaints in Exchange (509) 404 1

Below is the 1 telephone number that is subject to complaints to the FCC in this Exchange Code.

(509) 404-3103

This number has been the subject of 1 complaint to the FCC.

Click here for more details.