617 Phone Number Lookup | Massachusetts Area Code

Look up any phone number starting with 617 to identify the owner name, address, spam reports, and more. The 617 area code serves the city of Boston and several surrounding communities in Massachusetts.

Look Up a 617 Phone Number

Enter a full 10-digit number to identify the caller and whether it has been reported as spam.

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Where Is Area Code 617 Located?

The 617 area code covers the city of Boston and several surrounding communities in Massachusetts, largely coextensive with the inner ring of Greater Boston.

Counties Served:

  • Essex
  • Middlesex
  • Norfolk
  • Suffolk

Major Cities:

Other Cities and Towns:

  • Belmont
  • Chelsea
  • Everett
  • Milton
  • Somerville
  • Watertown
  • Winthrop

Overlay System

Area code 857 was overlaid onto area code 617 on May 2, 2001. Since then, 10-digit local dialing has been mandatory.

Area Code 617 Location Map

Area Code 617 Location on Massachusetts Map

Area code 617 is a general purpose code which was placed in service on January 1, 1947.

Phone Number Prefixes and Carriers

Our reverse phone lookup for Massachusetts analyzes the three-digit 617 area code to identify the initially assigned telecommunications company and rate center. This prefix code data may help to determine the U.S. carrier, Massachusetts geographic region, and local calling area associated with the phone number.

Phone numbers follow the following structure under the North American Numbering Plan:

  • NPA- area code (where the number was originally assigned)
  • NXX - Central office code that locates the specific neighborhood and identifies the service provider
  • XXXX - Subscriber number identifies the individual phone line within that local exchange

Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.

Prefixes by Company

Company Number of Prefixes
VERIZON NEW ENGLAND INC. 305
NEW CINGULAR WIRELESS PCS, LLC - DC 66
SPRINT SPECTRUM, L.P. 40
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 35
TC SYSTEMS, INC. 31
XO MASSACHUSETS, INC. 21
LEVEL 3 COMMUNICATIONS, LLC - MA 19
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 19
GLOBAL CROSSING LOCAL SERVICES, INC. - MA 18
RCN TELECOM SERVICES, INC. - MA 18
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 17
CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 14
OMNIPOINT MIAMI E LICENSE, LLC 13
COMCAST IP PHONE, LLC 11
PAETEC COMMUNICATIONS, INC. - MA 11
CTC COMMUNICATIONS CORP. - MA 10
AT&T - LOCAL 8
BROADVIEW NETWORKS, INC. - MA 8
BANDWIDTH.COM CLEC, LLC - MA 4
LOCAL ACCESS LLC - MA 4
DSCI, LLC 2
YMAX COMMUNICATIONS CORP. - MA 2
AMERICAN MESSAGING SERVICES, LLC 1
FREEDOM RING COMMUNICATIONS, LLC 1
ONVOY, LLC - MA 1

Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.

Prefixes by Rate Center

Rate Center Number of Prefixes
BOSTON 260
CAMBRIDGE 95
NEWTON 38
QUINCY 35
BROOKLINE 32
BRIGHTON 20
DORCHESTER 20
SOMERVILLE 18
JAMAICA PL 16
ROXBURY 15
MILTON 14
EASTBOSTON 13
WATERTOWN 13
CHARLESTN 12
CHELSEA 11
EVERETT 11
HYDE PARK 11
SO BOSTON 10
WALTHAM 8
BELMONT 7
SAUGUS 7
DEDHAM 4
WINTHROP 4
MALDEN 2
KINGSTON 1
MELROSE 1
WEYMOUTH 1

Other Massachusetts Area Codes

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