Establish a New Hampshire presence with a 603 virtual number — BAE Systems' defence electronics hub in Nashua, Dartmouth Health's clinical network, and New England's most business-friendly no-income-tax state. Activate in seconds.
Area code 603 is New Hampshire's only area code, covering the entire state — Manchester, Nashua, Concord, Portsmouth, and the Lakes Region. New Hampshire's economy is shaped by its distinctive tax structure — no income tax and no sales tax — which has made it one of the most business-friendly states in New England and attracted significant corporate and retail activity. The state's healthcare sector, anchored by Dartmouth Health and Elliot Hospital, is among the largest employment sectors. BAE Systems' Electronic Systems division in Nashua is a major defence technology employer, and the technology corridor along the Massachusetts border attracts significant spillover from Boston's technology and biotech industries. The state's outdoor recreation economy generates billions annually.
From Manchester to Rochester 603 covers the New England region of New Hampshire.
BAE Systems' Electronic Systems division in Nashua is one of the company's most important US defence technology facilities. Defence contractors, engineering services, and technology vendors need a local 603 number to engage BAE's substantial New Hampshire operations.
New Hampshire's tax structure attracts significant corporate activity and retail investment. Financial services, insurance, and professional services companies benefit from a 603 number when engaging the state's distinctive no-tax business community.
Dartmouth Health, anchored by Dartmouth Hitchcock Medical Center in Lebanon, is New Hampshire's leading academic medical centre. Healthcare technology and clinical services vendors need a local 603 number to engage Dartmouth Health's procurement network across the state.
The southern tier of New Hampshire, particularly Nashua and Manchester, benefits from significant technology and biotech investment spilling over from the Massachusetts Route 128 and Route 495 corridors. Technology and professional services firms benefit from a local 603 presence in this fast-growing market.
Every 603 number ships with fourteen professional tools for New Hampshire's defence-and-technology economy — compliance call recording for BAE Systems' vendor requirements, advanced routing for Dartmouth Health's clinical network, and analytics for the southern New Hampshire technology corridor.
Redirect every call to any device — mobile, desk phone, or laptop. Set rules by time, caller, or team.
Four steps. Five minutes. No technical setup, no hardware required.
Browse 603 numbers by Manchester, Nashua, Concord, or Portsmouth prefix — or port your existing New Hampshire number for free.
Select a plan for your New Hampshire team — BAE Systems vendor, Dartmouth Health partner, or no-tax business corridor firm, every feature included.
Configure your 603 line with Eastern Time routing for BAE's defence schedule and Dartmouth Health's clinical operations calendar.
Take 603 calls anywhere — BAE Systems' defence community, Dartmouth Health's network, and New Hampshire's business corridor all see a trusted local number.
Pick a region, then select any state to see every active area code with city coverage, time zones, and a number-picker shortcut.
Everything you need to know before getting a virtual 603 phone number. Our team is one click away for anything else.
Yes. TKOS supports simultaneous ring, call queuing, and user extensions on every 603 number — so your whole team can share one number while each member handles calls from their own device.
TKOS automatically fails over to the backup number you configure. If your internet goes down, 603 calls roll to a cell phone or another number instantly — so customers always reach someone without knowing there was an issue.
Absolutely. TKOS 603 numbers are 100% cloud-based. There's no desk phone, PBX hardware, or New Hampshire address required — manage everything from your browser or mobile app from anywhere.
Yes. Every TKOS 603 number includes a drag-and-drop IVR auto-attendant. Build multi-level phone menus — press 1 for sales, 2 for support — without any coding or IT help.
Yes. TKOS supports custom digit sequences on 603 area code numbers. Search for your preferred pattern when selecting a number — vanity sequences are available at no extra cost.
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