Riktnummer

617 Riktnummer: En guide till Boston, Cambridge och Greater Boston

Riktnummer 617 täcker Boston, Cambridge och de inre förorterna till Greater Boston. Utforska 617 städer, historia, 857-överlägget, uppringningstips och bluffsamtal.

Akil Patel

Senior författare

4 april 202514 min läsning
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617 area code hero infographic for Boston, Cambridge, and Greater Boston Massachusetts

Snabbt svar: Riktnummer 617 är telefonprefixet för Boston och dess inre förorter, som täcker staden Boston, Cambridge, Somerville, Newton, Quincy och Brookline, bland andra samhällen i Östra tidszonen. Det var en av Massachusetts två ursprungliga NANP-koder från 1947, som delade sin geografi med 857 överlägg infördes 2001, vilket gjorde tiosiffrig uppringning obligatorisk i hela regionen.

Vad är riktnummer 617?

Riktnummer 617 är ett av de mest igenkännliga telefonprefixen i USA — numret som har definierat Bostons identitet sedan den nordamerikanska numreringsplanen lanserades 1947. Det täcker ett kompakt men utomordentligt tätt territorium: själva staden Boston, de akademiska städerna Cambridge och Somerville tvärs över Charles River och den västra delen av Quinton-området genom New South Brookline och New Brookline. Inom den relativt lilla geografin finns ett av världens mest betydelsefulla kluster av högre utbildning, biomedicinsk forskning, finansiella tjänster och teknisk innovation.

Till skillnad från koder som täcker stora landsbygdsterritorier, definierar 617 en gångbar, transitansluten stadskärna där Harvard, MIT, Massachusetts General Hospital och Massachusetts State House alla delar samma prefix. De 508 riktnummer, som delades från 617 1988 för att tjäna den bredare centrala och sydöstra Massachusetts-regionen, täcker ett mycket större geografiskt fotavtryck - en kontrast som illustrerar hur mycket ekonomisk täthet som är packad i 617:s jämförelsevis smala fotavtryck.

DetaljVärde
Antal planområde (NPA)617
PlatsBoston och inre förorter, Massachusetts
Täcka över857 (2001)
TidszonEastern Time (ET)
I tjänst sedan dess1947
AngeMassachusetts
Landskod+1

Städer och städer i riktnummer 617

Cities in the 617 area code infographic showing Boston, Cambridge, Somerville, Newton, Quincy, and Brookline on a Suffolk and Middlesex county map

617-serviceområdet är bland de mest geografiskt kompakta av alla större storstadsriktnummer i USA - en tät stadsring centrerad kring Boston Harbor, Charles River och stadsdelarna och campusen som sträcker sig en kort bit i varje riktning från centrala Boston. Varje samhälle inom 617-fotavtrycket ligger inom bekvämt räckhåll för alla andra, anslutna till MBTA:s tunnelbana, buss och pendeltågsnät.

Större städer och samhällen i 617-området:

  • Boston — Massachusetts delstatshuvudstad och Suffolk County säte, regionens största stad och det ekonomiska, statliga och kulturella ankaret i hela New England, hem för State House på Beacon Hill, Financial District, Back Bay, Seaport District och dussintals nationellt erkända stadsdelar från South End till Roxbury till East Boston
  • Cambridge — Middlesex County stad tvärs över Charles River från Boston, hem för Harvard University, Massachusetts Institute of Technology och innovationsdistriktet Kendall Square — ett av de mest tätt koncentrerade biovetenskapliga och teknologiska klustren någonstans i världen
  • Somerville — Middlesex County stad som gränsar till Cambridge i norr, en av de mest tätbefolkade städerna i New England och ett snabbt växande bostads- och innovationsnav förankrat av Tufts University och närhet till de gröna och orangea MBTA-linjerna
  • Newton — Middlesex County stad på Bostons västra kant, ett av Greater Bostons mest välbärgade samhällen och Boston Colleges hem, belägen längs MBTA Green Lines D-grenkorridor
  • Quincy — Norfolk County stad på Bostons södra gräns, födelseplatsen för två amerikanska presidenter (John Adams och John Quincy Adams), ett växande kommersiellt centrum med direkt Red Line MBTA-tillgång till centrala Boston
  • Brookline — Norfolk County stad helt omgiven av staden Boston, ett av de rikaste samhällena i Massachusetts och hem för Harvard Medical Schools nätverk för undervisningssjukhus och Longwood Medical Area
  • Chelsea, Revere och Winthrop — samhällen i Suffolk County norr och nordost om Boston, var och en med en distinkt urban karaktär, tillgängliga med snabb transit och buss, och alltmer efterfrågade i takt med att Bostons bostadsmarknad har intensifierats

Län inom 617 serviceterritoriet:

GrevskapAnmärkningsvärda samhällen
SuffolkBoston, Chelsea, Revere, Winthrop
Middlesex (del)Cambridge, Somerville, Newton
Norfolk (del)Quincy, Brookline

Hela 617-regionen observerar Eastern Time (UTC−5 på vintern, UTC−4 under sommartid) — samma zon som New York City, Washington, D.C. och Philadelphia. Uppringare från Central- eller Pacific-tidszonerna bör planera för en till tre timmars skillnad när de schemalägger samtal med Boston-partners.

En kort historik över riktnummer 617

A short history of the 617 area code infographic showing key milestones from its 1947 NANP origins through the 508 split and the 857 overlay in 2001

Riktnummer 617 etablerades i 1947 som en av Massachusetts två ursprungliga koder i den nordamerikanska numreringsplanen - 617 för östra Massachusetts inklusive Boston och dess omgivande samhällen, och 413 för den västra halvan av delstaten. Under fyra decennier täckte 617 ett stort territorium som sträckte sig från New Hampshire-gränsen i norr till Cape Cod och öarna i söder.

När Massachusettss befolkning och telefonabonnentbas växte under 1980-talet, blev det ursprungliga 617 fotavtrycket för stort för att ett enda prefix skulle upprätthållas. I 1988, riktnummer 508 skapades som en geografisk uppdelning, som tog över centrala och sydöstra Massachusetts - Worcester, New Bedford, Brockton, Fall River, Plymouth och Cape and Islands - och lämnade 617 för att enbart fokusera på Bostons tunnelbana och dess inre förorter.

I 1997, 978 delades ytterligare från 508 för att tjäna nordöstra Massachusetts, inklusive Lowell, Lawrence, Salem och Gloucester, vilket drog kartan ännu närmare den moderna strukturen.

I slutet av 1990-talet konsumerade den explosiva tillväxten av mobilabonnemang inom 617:s nu koncentrerade Boston-territorium tillgängliga nummer i en takt som geografisk uppdelning ensam inte kunde hantera. I 2001, riktnummer 857 introducerades som ett överlägg för alla tjänster för hela 617-fotavtrycket, vilket kräver att alla uppringare inom regionen antar obligatorisk tiosiffrig uppringning. De Massachusetts Department of Telecommunications and Cable övervakar telekommunikationsreglering i delstaten tillsammans med den nordamerikanska numereringsplanadministrationen, övervakar tillgängligt antal inventeringar över både 617 och 857 när Bostons tillväxt fortsätter.

Viktiga milstolpar:

  • 1947 — 617 created as one of Massachusetts's two original NANP codes, serving eastern Massachusetts including Boston and the surrounding region
  • 1988 — 508 split from 617 to serve central and southeastern Massachusetts; 617 territory reduced to the Boston metro and inner suburbs
  • 1997 — 978 split from 508 for northeastern Massachusetts; the modern 617 footprint takes its current compact shape
  • 2001 — 857 overlay introduced for the entire 617 territory; ten-digit dialing becomes mandatory throughout Greater Boston

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Ringer ett 617-nummer

Because 617 operates alongside the 857 overlay across the same geographic territory, all callers within the Greater Boston service area must use ten-digit dialing for every call — whether calling a 617 number from a 617 line or a 617 number from an 857 line. This ten-digit requirement has been in effect since 2001 and applies to all subscribers.

Calling fromFormat to use
Within the 617 area617-XXX-XXXX (ten digits mandatory)
Elsewhere in the US or Canada1-617-XXX-XXXX
International+1 617 XXX XXXX

Time zone tip: Boston and all 617 communities observe Eastern Time — the same zone as New York City and Washington, D.C. Boston runs one hour ahead of Chicago, two hours ahead of Mountain Time, and three hours ahead of the West Coast. West Coast callers should account for the three-hour lead when scheduling early-morning calls with Boston partners.

Varför ett 617-nummer är bra för affärer

Why a 617 number is good for business infographic highlighting higher education, biotech and life sciences, healthcare, financial services, and government in Greater Boston

Boston's economy is built on industries that command global reputations — institutions that attract talent, capital, and partnerships from every continent. For any business serving these industries, a local 617 number immediately establishes Greater Boston credibility. No other area code in North America carries the same concentrated association with world-class research, medical innovation, and financial services in such a compact geography.

Reasons to choose a 617 area code number:

  • Higher education — Harvard University, MIT, Boston University, Northeastern University, Tufts University, and Boston College collectively anchor one of the densest university ecosystems in the world, driving year-round demand for housing, services, technology, and professional support across every 617 community
  • Biotech and life sciences — Kendall Square in Cambridge has been called the most innovative square mile on earth: Biogen, Moderna, Sanofi, Pfizer, AstraZeneca, and hundreds of startups operate within walking distance of MIT and Harvard Medical School, sustained by a venture capital and research infrastructure that funds more life-science deals than any other single district in the United States
  • Healthcare — Massachusetts General Hospital, Brigham and Women's, Beth Israel Deaconess Medical Center, Boston Children's Hospital, and Dana-Farber Cancer Institute all operate within the 617 footprint, making Greater Boston one of the top two or three academic medical markets in the world
  • Financial services — Fidelity Investments, State Street Corporation, and Liberty Mutual are headquartered in Boston, anchoring a financial services and insurance ecosystem that extends through Back Bay, the Financial District, and the Seaport to support thousands of advisory, accounting, and fintech firms
  • Government and professional services — Massachusetts state government employs tens of thousands across the State House, executive agencies, and the court system, while a thriving legal and lobbying sector serves regulated industries across the 617 footprint; businesses looking to extend their northeastern reach into Philadelphia and the Mid-Atlantic can pair a 617 number with a virtual 445 area code number to cover both major corridors simultaneously

617 riktnummer bluffsamtal att titta efter

617 area code scam calls to watch for infographic showing IRS fraud, Medicare scams, Eversource utility shutoff threats, Social Security fraud, and student loan scams on a white background

Because 617 is instantly recognized as a Boston number associated with universities, hospitals, government agencies, and major financial institutions, scammers spoof it to exploit residents, students, healthcare workers, and senior citizens who routinely receive legitimate calls from the same types of organizations. The large student population at Boston's universities and the significant elderly population in communities like Quincy and Brookline make the 617 footprint a recurring target for fraud.

Common 617 scam types to watch for:

  • IRS and tax fraud — Callers threatening immediate arrest, deportation, or asset seizure over unpaid federal taxes, frequently spoofed as a Boston government number to appear local to university students and new residents unfamiliar with IRS contact procedures
  • Medicare and healthcare fraud — Scammers posing as representatives from Massachusetts General Hospital, Brigham and Women's, or Medicare, requesting insurance card numbers, Social Security digits, or co-payment information under the pretext of processing a claim or updating patient records
  • Eversource and National Grid utility shutoff threats — Callers impersonating Eversource Energy or National Grid representatives, threatening same-day power disconnection unless immediate payment is made via gift card, wire transfer, or cryptocurrency
  • Social Security suspension fraud — Automated calls claiming a Social Security number has been suspended, linked to criminal activity, or used in a money laundering case, targeting older residents in Quincy, Brookline, Chelsea, and other 617 communities with large senior populations
  • Student loan and financial aid fraud — Scammers posing as Department of Education officials or Harvard, BU, or Northeastern financial aid administrators, offering fraudulent loan forgiveness in exchange for account numbers, Social Security details, or upfront processing fees

How to protect yourself:

  • Let unknown 617 calls go to voicemail — universities, hospitals, government agencies, and utilities always leave a callback message and never demand instant payment by gift card
  • No IRS, Medicare, Social Security, utility, or financial institution will ever demand cryptocurrency, wire transfer, or gift card payment during an unsolicited phone call
  • Verify any unexpected caller by using the official number listed on the organization's website — never the number the caller provides
  • Report suspected 617 scam calls to the FTC at reportfraud.ftc.gov and to the Massachusetts Attorney General at mass.gov/ago

Riktnummer 617 i korthet

  • Area code 617 covers Boston, Cambridge, Somerville, Newton, Quincy, Brookline, Chelsea, Revere, and Winthrop across Suffolk, Middlesex, and Norfolk counties
  • It was established in 1947 as one of Massachusetts's original NANP codes, serving eastern Massachusetts before a series of splits reduced it to the compact Boston metro footprint it holds today
  • The entire 617 region observes Eastern Time — one hour ahead of Chicago and three hours ahead of the West Coast
  • It operates alongside the 857 overlay introduced in 2001, with ten-digit dialing mandatory for all calls within the region
  • The economy is anchored by Harvard, MIT, Kendall Square biotech, major academic medical centers, Fidelity, State Street, and Massachusetts state government
  • The region is home to the Freedom Trail, Fenway Park, the Longwood Medical Area, and one of the most transit-connected urban cores in the United States
  • Common scam types include IRS fraud, Medicare fraud, Eversource/National Grid utility shutoff threats, Social Security fraud, and student loan fraud

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Vanliga frågor

Vad är riktnummer 617?

The 617 area code is a North American telephone area code serving Boston and the inner suburbs of Greater Boston, Massachusetts. Established in 1947 as one of Massachusetts's original NANP codes, it covers the city of Boston, Cambridge, Somerville, Newton, Quincy, and Brookline, among other communities across Suffolk, Middlesex, and Norfolk counties. It shares its territory with the 857 overlay introduced in 2001, with mandatory ten-digit dialing required for all calls within the region.

Where is the 617 area code located?

Area code 617 is located in eastern Massachusetts, covering Boston and its immediate inner suburbs. Its territory includes the city of Boston, Cambridge, Somerville, Newton, Quincy, Brookline, Chelsea, Revere, and Winthrop — a compact urban ring centered on Boston Harbor and the Charles River, encompassing parts of Suffolk, Middlesex, and Norfolk counties.

What cities are in the 617 area code?

The largest city in the 617 area code is Boston, the capital of Massachusetts. Other major communities include Cambridge, Somerville, Newton, Quincy, and Brookline, along with Chelsea, Revere, and Winthrop. Because 617 operates with the 857 overlay, all of these communities also receive 857 numbers — both prefixes serve the exact same geographic territory.

What is the difference between the 617 and 857 area codes?

Area code 617 is the original code, in service since 1947. Area code 857 is an all-services overlay introduced in 2001 to provide additional telephone numbers for the same geographic territory when 617's available number supply could no longer meet demand. Both codes serve exactly the same cities and communities — the difference is only that 617 numbers were assigned first and have been in use since 1947, while 857 numbers were issued beginning in 2001.

What time zone is area code 617 in?

Area code 617 is in the Eastern Time Zone. Greater Boston observes Eastern Standard Time (UTC−5) in winter and Eastern Daylight Time (UTC−4) during daylight saving time — the same zone as New York City, Washington, D.C., and Philadelphia, one hour ahead of Chicago and three hours ahead of the Pacific Coast.

Does the 617 area code have an overlay?

Yes. Area code 617 has one overlay — area code 857, introduced in 2001 as an all-services overlay for the entire 617 territory. Since 857 was activated, ten-digit dialing has been mandatory for all calls placed within the Greater Boston service area, whether from a 617 number to another 617 number, or between 617 and 857 numbers.

Is a 617 number a cell phone or landline?

A 617 number can be a cell phone, a landline, or a VoIP number. Because the area code is assigned to all types of telephone subscriptions across Greater Boston, the 617 prefix alone does not indicate whether a number is mobile or fixed — a reverse phone lookup is the most reliable way to identify the line type associated with a specific number.

Can I get a 617 number for a business outside Massachusetts?

Yes. Virtual phone providers offer 617 area code numbers to businesses and individuals regardless of physical location. A virtual 617 number lets you establish a credible Boston presence, route calls to any device anywhere in the world, and connect with Cambridge, Quincy, and Greater Boston customers without maintaining a physical Massachusetts address.

Written by

Akil Patel

Senior författare

Akil writes the MCM field guides on phone numbers, dialing rules, and area-code references used by ops teams across North America.

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