Arlington, Virginia
571 Area Code
Establish a trusted local presence in Arlington and Northern Virginia with a 571 area code number. Perfect for businesses seeking higher pickup rates and local trust in Arlington, Fairfax, Loudoun and Prince William counties.
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About 571 Area Code
Area code 571 serves Northern Virginia, covering Arlington, Alexandria, Reston, Leesburg, Fairfax and Manassas. Created on March 1, 2000 as an overlay for area code 703, 571 spans Arlington, Fairfax, Loudoun and Prince William counties plus the independent cities of Alexandria, Fairfax, Falls Church, Manassas and Manassas Park. The code supports local voice and SMS-capable numbers used by government contractors, technology companies, professional services and businesses throughout this economically vital region adjacent to Washington, D.C.
The 571 region drives one of the nation's most dynamic economies, anchored by federal government contracting (defense, intelligence, IT services), technology clusters (data centers, cybersecurity, cloud computing), and professional services (consulting, legal, financial). Local businesses use 571 numbers for client communication, contract coordination, professional networking and customer support. A local area code delivers higher answer rates in a metro area where proximity to D.C., government agencies and Fortune 500 headquarters makes regional credibility essential for business success.
FoneSwift lists live 571 inventory and capabilities on this page. Search numbers to see which support Voice, SMS and MMS. Area-code availability changes over time. If a local 571 number is not immediately available, the overlay code 703 serves the same geographic region and can provide identical Northern Virginia presence for businesses targeting government, technology or professional service markets.
If your business targets Northern Virginia or the Washington metro area, publish numbers in both local and E.164 formats (e.g., (571) 555-1234 and +1 571 555 1234) and register messaging traffic if you plan A2P campaigns. For porting, see our porting guide. Note that 10-digit dialing is mandatory within the 571/703 overlay region. Keeping the same number preserves client relationships in a market where government contracting, technology partnerships and professional reputation drive long-term business value.
| Country | United States |
| State | Virginia |
| Area code | 571 |
| Primary cities | Arlington, Alexandria, Reston, Leesburg |
| Counties served | Arlington, Fairfax, Loudoun, Prince William, Fauquier, Stafford |
| Timezone | America/New York (EST) |
| Created | March 1, 2000 |
| International Format | +1 571 XXX XXXX |
| Local Format | (571) XXX-XXXX |
10-digit dialing is mandatory within and into the 571/703 overlay region for all calls, including local calls. Register A2P messaging for business SMS to comply with US carrier rules (10DLC).
Area code 571 uses Eastern Standard Time (EST, UTC-5) and observes Daylight Saving Time (EDT, UTC-4 during summer months). Plan outreach accordingly for time-sensitive calls to government agencies and businesses.
Local numbers are essential for higher answer rates in government contracting and professional services markets. The overlay code 703 serves the same geographic region. Consider both 571 and 703 for additional inventory while maintaining Northern Virginia presence.
Quick Facts about 571 Area Code
Interesting tidbits about this area code 571
Overlay for 703
Area code 571 was created in 2000 as an overlay for 703, meaning both codes serve the exact same geographic region. This approach avoided splitting Northern Virginia into separate area codes and requires 10-digit dialing for all local calls.
Government contracting hub
Northern Virginia leads the nation in federal contracting dollars. The region hosts major government contractors like Booz Allen Hamilton, Leidos, Northrop Grumman and hundreds of defense, intelligence and IT firms serving federal agencies.
Data center capital
Loudoun County in the 571 region is known as Data Center Alley, housing the world's highest concentration of data centers. Tech giants like Amazon Web Services, Microsoft Azure and Google Cloud operate massive facilities here.
Pentagon proximity
The 571 area code includes Arlington, home to the Pentagon, the world's largest office building and headquarters of the U.S. Department of Defense. This proximity drives defense contracting, military logistics and national security businesses.
Tech talent density
Northern Virginia ranks among the top regions nationally for technology workers and STEM talent. The area attracts professionals from around the world to work in cybersecurity, cloud computing, software development and IT services.
Metro accessibility
The Washington Metro subway system serves the 571 region extensively, connecting Arlington, Alexandria, Fairfax and other communities to D.C., making it easy for businesses to access federal agencies, clients and partners throughout the metro area.
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How Does Local 571 Phone Numbers Work?
A local business number is a structured telephone identifier that tells networks where to route calls and messages. When you use a 571 number in Arlington and Virginia, the digits signal the international gateway, the geographic region, the local exchange and the specific subscriber, so calls reach the right destination quickly and reliably.
The typical parts of a United States local number are:
- Country code (+1): identifies United States for international routing.
- Area code (571): directs the call to the Arlington / Virginia region.
- Central office / exchange (eg. 555): narrows the call to a local switching area or rate center.
- Subscriber number (eg. 1234): the unique line assigned to a person, extension, or device.
Example formats:
| International Format (E.164) | +1 571 555 1234 |
| Local Format (National) | (571) 555-1234 |
Quick Dialing Guide
The correct formats to reach 571 numbers locally and globally.
From Landlines
Standard United States FormatUse for domestic long-distance calls within United States.
From Mobile
E.164 InternationalThe universal format. Works on any mobile device, anywhere.
International
From abroadDialing from outside United States (exit code 00 varies by country).
With FoneSwift, your 571 number can be instantly configured through our intuitive dashboard. Connect it to call forwarding rules, AI voice agents, IVR menus, or route calls directly to any device. Enable voice, SMS, and MMS capabilities right from your account, no technical setup required. Your number becomes active immediately after purchase, and you can update routing, business hours, and integrations anytime.
For businesses, local numbers offer clear benefits: higher answer rates, stronger local recognition, and better performance for local campaigns and customer trust. Typical business features include call forwarding, call recording, auto-attendants, voicemail-to-email, and multi-device ringing.
Important operational notes:
- SMS & A2P: If you plan to send application-to-person messages from a 571 number, register your traffic where required and follow carrier rules (10DLC/A2P) to avoid deliverability or throughput issues.
- Number Porting: Bring your existing 571number to FoneSwift seamlessly. Our team handles the entire porting process, simply submit your number details and we'll coordinate with your current provider. Porting typically completes within 5-10 business days, and you'll receive updates at each step. There's no service interruption during the transfer.
- Display & formatting: Always publish numbers in both local and E.164 formats so international and mobile users can easily dial.
Ready to get started? Browse available 571 numbers in the phone numbers section above, you'll see real-time availability and can filter by features like voice, SMS, and MMS. Once you find your perfect number, purchase it in seconds and start making calls immediately. Our team is here to help you choose the right setup for your business needs, whether you're setting up AI receptionists, call forwarding, or SMS campaigns. Start your 14-day free trial today, no credit card required.
How to Get a 571 Phone Number
Buying a local 571 phone number using FoneSwift is easy and takes just a few minutes. Follow these simple steps to get your local 571 phone number and start connecting with customers in United States today.
Create a new account on FoneSwift or sign in to your existing account to get started.
Once logged in, you'll be taken to your FoneSwift dashboard where you can manage all your phone numbers and settings.
Click on Settings in the sidebar, then go to "My Numbers" and click the "Add a Number" button.
Choose United States as your country from the dropdown menu.
Select Local as the type of number, then choose the 571 area code from the available options.
Click the "Search" button to see all available phone numbers with the selected area code.
Browse through the available numbers, select one that fits your needs, click "Buy Number", and confirm your purchase.
Your number is now active! Start making and receiving calls from the FoneSwift Dialer immediately.
You can configure your number to handle calls, forward calls, or even create an AI voice agent to handle the calls for you.
Businesses Using 571 Phone Numbers
Northern Virginia hosts government contracting, technology, data centers, professional services and real estate. Local phone numbers are essential for client-facing operations and government sector engagement.
Government contracting
Defense contractors, IT services firms, intelligence agencies and consulting companies use local numbers for contract coordination, client communication, security clearance verification and partnership development across federal agencies.
Technology & cybersecurity
Cloud computing providers, cybersecurity firms, software companies and tech startups use local numbers for client support, sales outreach, partnership coordination and talent recruitment in one of the nation's leading tech hubs.
Data centers & infrastructure
Data center operators, colocation providers, network infrastructure companies and managed service providers use local lines for facility operations, client communication, vendor coordination and technical support throughout Data Center Alley.
Professional services
Law firms, consulting companies, accounting practices and financial advisors use local numbers for client communication, case management, appointment scheduling and business development in this affluent and highly educated market.
Real estate & development
Commercial real estate firms, residential brokers, property management companies and developers use local numbers for client inquiries, property showings, lease coordination and investment discussions in one of the nation's most dynamic markets.
Healthcare & biotech
Hospital systems, medical practices, biotech research firms and telehealth providers use local numbers for patient scheduling, appointment reminders, clinical coordination and research partnerships serving the region's diverse population.
Why Choose 571 Local Phone Number for Your Business?
Discover the advantages of having a local phone number that builds trust, increases engagement, and drives results.
Powerful Features for Your 571 Local Phone Number
Get the most out of your localphone number with FoneSwift's enterprise-grade features designed to help your business communicate more effectively.
Nearby Area Codes
Explore other area codes in the same region to expand your local presence.
Frequently Asked Questions
What cities use the 571 area code?
When was the 571 area code created?
What is the relationship between 571 and 703 area codes?
Can I get SMS-capable numbers in area code 571?
Do I need to dial 10 digits for 571 numbers?
Is 571 a toll-free code?
How do I buy a 571 local phone number?
Where can I find official coverage or history for 571?
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