Home / Area 240 / Prefix 378
Prefix Lookup

(240) 378 Phone Number Lookup

Research phone numbers under this exchange in Frederick, Maryland. Review carrier details, activity signals, and community caller feedback.

141number listings
0caller reports
8lookup pages

Phone Numbers in This Prefix

Browse numbers in this exchange and open any listing to view caller details, spam signals, and community feedback. Showing 19–36 of 141 listings for this prefix.

Recent activity Landline

(240) 378-7661

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7681

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7701

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7721

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7741

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7761

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7781

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7801

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7821

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7841

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7861

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7881

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7901

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7921

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7941

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7961

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-7981

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing
Recent activity Landline

(240) 378-8001

Frederick, Maryland

  • Carrier: Core Communications Inc. - Md
  • Exchange: 240-378
  • Report type: Reverse lookup profile
View listing

About this prefix

Area code 240 prefix 378 is organized as a reverse lookup section for Frederick, Maryland. The page combines location metadata, carrier information, line type, number listings, and community activity in one place.

Public URLs use the exchange format 240-378, while each listing still maps back to the correct area code and prefix structure.