https://www.fitchburgma.gov/289/Phone-Books
Requires a library card. InfoSpace - includes a Reverse Directory; International Telephone Directories - Superpages - White Pages.

https://www.whitepages.com/white-pages/worcester-ma
Lookup People, Phone Numbers, Addresses & More in Worcester , MA. Whitepages is the largest and most trusted online phone book and directory.

https://www.addresses.com/white-pages/massachusetts/
Search Massachusetts's white pages to look up people, addresses, phone numbers and more.