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 127–141 of 141 listings for this prefix.

Recent activity Landline

(240) 378-9821

Frederick, Maryland

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

(240) 378-9841

Frederick, Maryland

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

(240) 378-9861

Frederick, Maryland

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

(240) 378-9881

Frederick, Maryland

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

(240) 378-9901

Frederick, Maryland

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

(240) 378-9921

Frederick, Maryland

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

(240) 378-9941

Frederick, Maryland

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

(240) 378-9961

Frederick, Maryland

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

(240) 378-9981

Frederick, Maryland

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

(240) 378-0101

Frederick, Maryland

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

(240) 378-0121

Frederick, Maryland

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

(240) 378-0141

Frederick, Maryland

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

(240) 378-0161

Frederick, Maryland

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

(240) 378-0181

Frederick, Maryland

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

(240) 378-0201

Frederick, Maryland

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

(240) 378-0221

Frederick, Maryland

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

(240) 378-0241

Frederick, Maryland

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

(240) 378-0261

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.