Home / Area 423 / Prefix 721
Prefix Lookup

(423) 721 Phone Number Lookup

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

134number 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 127–134 of 134 listings for this prefix.

Low activity Wireless

(423) 721-4098

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4118

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4138

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4158

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4178

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4198

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4218

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4238

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4258

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4278

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4298

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4318

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4338

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4358

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4378

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4398

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4418

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing
Low activity Wireless

(423) 721-4438

Knoxville, Tennessee

  • Carrier: United States Cellular Corp. - Tennessee
  • Exchange: 423-721
  • Report type: Reverse lookup profile
View listing

About this prefix

Area code 423 prefix 721 is organized as a reverse lookup section for Knoxville, Tennessee. The page combines location metadata, carrier information, line type, number listings, and community activity in one place.

Public URLs use the exchange format 423-721, while each listing still maps back to the correct area code and prefix structure.