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 55–72 of 141 listings for this prefix.

Recent activity Landline

(240) 378-8381

Frederick, Maryland

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

(240) 378-8401

Frederick, Maryland

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

(240) 378-8421

Frederick, Maryland

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

(240) 378-8441

Frederick, Maryland

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

(240) 378-8461

Frederick, Maryland

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

(240) 378-8481

Frederick, Maryland

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

(240) 378-8501

Frederick, Maryland

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

(240) 378-8521

Frederick, Maryland

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

(240) 378-8541

Frederick, Maryland

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

(240) 378-8561

Frederick, Maryland

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

(240) 378-8581

Frederick, Maryland

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

(240) 378-8601

Frederick, Maryland

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

(240) 378-8621

Frederick, Maryland

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

(240) 378-8641

Frederick, Maryland

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

(240) 378-8661

Frederick, Maryland

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

(240) 378-8681

Frederick, Maryland

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

(240) 378-8701

Frederick, Maryland

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

(240) 378-8721

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.