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Area Code and Exchange (253) 999 in Washington

Exchange Code 999 for Area Code 253 covers the city of Tacoma, Pierce County in the State of Washington. It is centered at N 47º 15' 10.36", W 122º 26' 39.45". This Exchange Code was introduced on 22 February 2017 and is designated as being used for Landline telephones.

This Exchange covers telephone numbers ranging from (253) 999-0000 to (253) 999-9999.

Technical Information for Exchange (253) 999

NPA/Area Code: 253
NXX/Exchange Code: 999
City: Tacoma
County: Pierce
State: Washington
Rate Center: TACOMA
OCN: 073H
Time Zone: PST
DST Observed:
Exchange Status: Active
NXX Use Type: Landline
NXX Intro Date: 22 February 2017
Latitude: 47.2528769
Longitude: -122.4442906
New NPA:
Overlay:
LATA: 674
FIPS: 53053
CBSA Code:
Number Pooling: Yes

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Number Pooling in Exchange (253) 999

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 253-999 and the following thousand blocks are currently assigned to carriers.