Area code 571

Where area code 571 is

NANPA lists 571 as an in-service geographic area code for Virginia, first put into service on March 1, 2000. It is an overlay: 571 and 703 cover the same territory, so neighbors on the same street can have different area codes. It is in the Eastern time zone. The places with the most assigned exchanges include Herndon, Leesburg, Manassas, Occoquan, and Haymarket. By population, its largest named places are Leesburg, Manassas, Herndon, Haymarket, and Occoquan.

Where 571 numbers are local

571 holds 13% of the 4,898 central office codes assigned in Virginia, the 5th most of the state's 10 codes. 5 Census places could be matched to rate centers with 571 exchanges; the most populous are Leesburg (49,831), Manassas (43,616), Herndon (25,180), and Haymarket (1,594). Each place page lists the exact prefixes and carriers for that town.

Ten-digit and seven-digit dialing in 571

According to NANPA's dialing-plan data, local calls within 571 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.

Who holds 571 exchanges

39 carriers hold the 632 central office codes assigned in 571. Omnipoint Communications Cap Operations, LLC has the most, with 101 (16%). 604 of the codes (96%) 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 571

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 571 has codes in 19 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 571

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). 632 are assigned in 571, 79% of 800. 227 were assigned in 2020 or later.

Getting a 571 number for your business

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 571 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.