Area code 425

Where area code 425 is

NANPA lists 425 as an in-service geographic area code for Washington, first put into service on April 27, 1997. It is not part of an overlay, so every number in its territory starts with 425. It is in the Pacific time zone. The places with the most assigned exchanges include Bellevue, Everett, Kirkland, Bothell, and Renton. By population, its largest named places are Bellevue, Everett, Renton, Kirkland, and Bothell.

Places served by 425

425 holds 18% of the 3,531 central office codes assigned in Washington, the 4th most of the state's 6 codes. 9 Census places could be matched to rate centers with 425 exchanges; the most populous are Bellevue (154,000), Everett (113,000), Renton (106,000), and Kirkland (95,499). Each place page lists the exact prefixes and carriers for that town.

Dialing 425 numbers

According to NANPA's dialing-plan data, local calls within 425 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10-digit dialing permissible at service provider discretion"

Phone companies in area code 425

34 carriers hold the 628 central office codes assigned in 425. Ziply Fiber Northwest, LLC d/b/a Ziply Fiber has the most, with 122 (19%). 406 of the codes (65%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Local calling areas in 425

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 425 has codes in 14 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

Number supply in 425

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 628 are assigned in 425, 79% of 800. 73 were assigned in 2020 or later.

A local 425 number on Callata

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in area code 425 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.