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 1–18 of 141 listings for this prefix.

Recent activity Landline

(240) 378-7301

Frederick, Maryland

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

(240) 378-7321

Frederick, Maryland

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

(240) 378-7341

Frederick, Maryland

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

(240) 378-7361

Frederick, Maryland

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

(240) 378-7381

Frederick, Maryland

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

(240) 378-7401

Frederick, Maryland

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

(240) 378-7421

Frederick, Maryland

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

(240) 378-7441

Frederick, Maryland

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

(240) 378-7461

Frederick, Maryland

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

(240) 378-7481

Frederick, Maryland

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

(240) 378-7501

Frederick, Maryland

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

(240) 378-7521

Frederick, Maryland

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

(240) 378-7541

Frederick, Maryland

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

(240) 378-7561

Frederick, Maryland

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

(240) 378-7581

Frederick, Maryland

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

(240) 378-7601

Frederick, Maryland

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

(240) 378-7621

Frederick, Maryland

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

(240) 378-7641

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.