425 Area Code

Area Code 425 Location: Washington

The 425 area code covers the area north and east of Seattle, Washington, including the Eastside suburbs, extending east to North Bend, north to Everett and south to Maple Valley.

Counties Served by Area Code 425:

Major Cities in the 425 Service Area:

• Bellevue
• Redmond
• Everett
• Renton

Other Cities and Towns:

• Ames Lake
• Bothell
• Brier
• Carnation
• Duvall
• Edmonds
• Fall City
• Issaquah
• Kenmore
• Kirkland
• Lake Stevens
• Lynnwood
• Maple Valley
• Mill Creek
• Mountlake Terrace
• Mukilteo
• Newcastle
• North Bend
• Sammamish
• Snoqualmie
• Snoqualmie Pass
• Woodinville

Overlay System

Area code 425 is slated to participate in the overlay plan of area code 564. Area code 564 has been active in numbering plan area 360 since 2017.

Area Code 425 Location Map

Area code 425 is a general purpose code which was placed in service on April 27, 1997.

425 Area Code Prefixes

Our Washington phone number lookup service will analyze the three-digit prefix of any 425 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Washington geographic region, and local calling area associated with the phone number.

Phone numbers follow the following structure under the North American Numbering Plan:

• NPA- area code (where the number was originally assigned)
• NXX - Central office code that locates the specific neighborhood and identifies the service provider
• XXXX - Subscriber number identifies the individual phone line within that local exchange

Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.

Prefixes by Company

Company	Number of Prefixes
ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	123
QWEST CORPORATION	68
T-MOBILE USA, INC.	51
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	40
LEVEL 3 COMMUNICATIONS, LLC - WA	36
NEW CINGULAR WIRELESS PCS, LLC	32
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	29
TELEPORT COMMUNICATIONS AMERICA, LLC - WA	27
ONVOY, LLC - WA	23
XO WASHINGTON, INC.	19
MCIMETRO ACCESS TRANSMISSION SERVICES LLC	11
GLOBAL CROSSING LOCAL SERVICES, INC. - WA	10
LEVEL 3 TELECOM OF WASHINGTON, LLC - WA	9
SPRINT SPECTRUM, L.P.	9
CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK	8
AT&T - LOCAL	7
COMCAST IP PHONE, LLC	7
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA	4
MCLEODUSA TELECOMMUNICATION SERVICES, INC. - WA	3
USA MOBILITY WIRELESS, INC.	3
BANDWIDTH.COM CLEC, LLC - WA	2
CENTURYLINK COMMUNICATIONS, LLC	2
WIDE VOICE, LLC - WA	2
PEERLESS NETWORK OF WASHINGTON, LLC - WA	1
TELNYX LLC	1

Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.

Prefixes by Rate Center

Rate Center	Number of Prefixes
BELLEVUE	149
EVERETT	106
KIRKLAND	73
BOTHELL	49
RENTON	47
HALLS LAKE	42
ISSAQUAH	25
SILVERLAKE	15
MAPLE VLY	10
NORTH BEND	5
CARNATION	2
FALL CITY	2
AMES LAKE	1
SNOQUMPASS	1

Other Washington Area Codes

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