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 37–54 of 141 listings for this prefix.

Recent activity Landline

(240) 378-8021

Frederick, Maryland

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

(240) 378-8041

Frederick, Maryland

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

(240) 378-8061

Frederick, Maryland

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

(240) 378-8081

Frederick, Maryland

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

(240) 378-8101

Frederick, Maryland

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

(240) 378-8121

Frederick, Maryland

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

(240) 378-8141

Frederick, Maryland

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

(240) 378-8161

Frederick, Maryland

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

(240) 378-8181

Frederick, Maryland

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

(240) 378-8201

Frederick, Maryland

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

(240) 378-8221

Frederick, Maryland

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

(240) 378-8241

Frederick, Maryland

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

(240) 378-8261

Frederick, Maryland

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

(240) 378-8281

Frederick, Maryland

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

(240) 378-8301

Frederick, Maryland

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

(240) 378-8321

Frederick, Maryland

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

(240) 378-8341

Frederick, Maryland

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

(240) 378-8361

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.