Area code 351 is a telephone area code in the North American Numbering Plan. It serves as an overlay for area code 978, meaning it shares the same geographic region. Introduced to meet the growing demand for phone numbers, area code 351 ensures sufficient numbering resources. Residents and businesses in the area may receive phone numbers with this code, requiring ten-digit dialing for local calls.
Area code 351 serves northeastern Massachusetts, including cities such as Lowell, Lawrence, and Haverhill. It also covers parts of Middlesex and Essex counties, extending to towns like Billerica, Chelmsford, and Andover. This area code is an overlay for the region, sharing its coverage with area code 978. Residents and businesses in this vibrant area benefit from its proximity to Boston and the scenic Merrimack Valley.
Area code 351 was established as an overlay for the existing 978 area code in Massachusetts. Introduced on May 2, 2001, it was created to address the growing demand for new telephone numbers in the region. The overlay method allowed existing 978 numbers to remain unchanged while providing additional numbering options. This approach helped accommodate the increasing population and technological advancements requiring more phone lines.
Area code 351 serves a diverse mix of users in Massachusetts, including technology companies, educational institutions, healthcare facilities, and manufacturing businesses. Many telecommunications providers and data centers also utilize this code. The growing biotech sector and research facilities frequently use these numbers, as do various small businesses and residential subscribers in the area.
Area code 351 has seen its share of unwanted calls, with residents reporting various phone scams and spam. Common schemes include robocalls claiming to be from government agencies, fake tech support services, and fraudulent credit card offers. Like many area codes nationwide, 351 numbers are frequently spoofed by scammers to appear local and trustworthy.
To get a phone number with area code 351, contact major carriers like Verizon, AT&T, T-Mobile, or Sprint. When signing up for a new line, specify that you want a number with the 351 prefix. You can also try virtual phone services like Google Voice or VoIP providers. If local numbers aren't immediately available, ask to be notified when one becomes free.