Get a local business phone number in Renton, WA
Renton's area code, prefixes and carriers from NANPA records, and how to put a Renton number in front of your customers.
- Area code
- 425
- Exchanges
- 53NANPA-assigned
- Carriers
- 11
- Population
- 105,543Census 2024 est.
Renton area codes
Renton, in King County, Washington, had a Census-estimated population of 105,543 in July 2024. All 53 exchanges NANPA lists for its rate center are in area code 425. Renton is in the Pacific time zone.
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.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 425 | 53 | 100% | 1997 | none | Pacific |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Renton phone exchanges
11 carriers hold the 53 exchanges assigned to Renton's rate center. Qwest Corporation has the most, with 18. 36 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Qwest Corporation | 18 | 34% |
| Mcimetro Access Transmission Services LLC | 8 | 15% |
| Level 3 Communications, LLC - Wa | 6 | 11% |
| Teleport Communications America, LLC - Wa | 5 | 9.4% |
| Electric Lightwave LLC d/b/a Allstream | 4 | 7.5% |
| New Cingular Wireless PCS, LLC | 3 | 5.7% |
| Cellco Partnership d/b/a Verizon Wireless - Wa | 3 | 5.7% |
| T-mobile USA, INC. | 3 | 5.7% |
| Paetec Itel, LLC | 1 | 1.9% |
| Onvoy, LLC - Wa | 1 | 1.9% |
| Level 3 Telecom of Washington, LLC - Wa | 1 | 1.9% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Renton phone prefixes
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Renton's rate center (RENTON). The earliest assignment date recorded in the file for these codes is 2001. 6 of the 53 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 425 | 203, 204, 207, 226, 227, 228, 234, 235, 237, 243, 251, 254, 255, 264, 271, 272, 276, 277, 282, 291, 306, 336, 390, 430, 473, 479, 496, 517, 523, 524, 525, 528, 529, 545, 547, 566, 572, 656, 663, 687, 690, 728, 738, 757, 793, 873, 902, 917, 919, 965, 970, 981, 988 |
Source: NANPA utilized central office code file.
When Renton's exchanges were assigned
The table groups Renton's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 4 | 36% |
| 2010s | 1 | 9.1% |
| 2020s | 6 | 55% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Rate centers and local calling in Renton
What a caller sees as "local" is the area code plus prefix. In Renton, those come from the RENTON rate center, as recorded by NANPA.
If your business already has a Renton number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Businesses around Renton
Renton is part of the Seattle-Tacoma-Bellevue, WA metro area, home to 4.1 million people in 2024. County Business Patterns counted 110,685 business establishments in the Seattle, WA metro area in 2023, employing 1,884,361 people. The largest sectors by establishment count are professional, scientific, and technical services (14,812), construction (13,610), and health care and social assistance (13,557).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 3,876 | 65,711 | 17.0 |
| Offices of real estate agents and brokers | 3,449 | 9,353 | 2.7 |
| Limited-service restaurants | 2,939 | 48,471 | 16.5 |
| Residential remodelers | 2,882 | 10,444 | 3.6 |
| Dental offices | 2,189 | 18,592 | 8.5 |
| Law offices | 2,146 | 15,271 | 7.1 |
| Physician practices | 1,630 | 37,420 | 23.0 |
| Landscaping services | 1,583 | 11,001 | 6.9 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Renton business line
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 Renton 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.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Seattle, WA metro area, 17 users on RingCentral RingEX Core come to $510.00 a month and on Ooma Office Pro $424.15, at month-to-month list prices checked September 28, 2026. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $339.00 | $4,068.00 |
| Quo (Starter) | $19.00 per user | $323.00 | $3,876.00 |
| Nextiva (Core) | $23.00 per user | $391.00 | $4,692.00 |
| Ooma (Office Pro) | $24.95 per user | $424.15 | $5,089.80 |
| Dialpad (Standard) | $27.00 per user | $459.00 | $5,508.00 |
| RingCentral (RingEX Core) | $30.00 per user | $510.00 | $6,120.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Frequently asked questions
What area code is Renton, WA?
425. All exchanges NANPA lists for Renton are in 425.
How many phone companies have exchanges in Renton?
11, holding 53 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Renton business number?
Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.
How much is a business phone line in Renton?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 17 users come to $339.00 a month. For comparison, 17 users on RingCentral RingEX Core list at $510.00 a month (checked September 28, 2026).