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Area Code 346: Comprehensive Guide to Houston's Overlay Code

Area code 346 is a key part of the North American Numbering Plan (NANP), serving the bustling Houston, Texas area and its surroundings.

Technical Specifications of Area Code 346

  • NPA Code: 346
  • Type: Overlay
  • Implementation Date: July 1, 2014
  • State: Texas

Geographic Coverage

Area code 346 covers the southeastern region of Texas, focusing on the Houston metropolitan area.

Major Cities Served by Area Code 346

  • Alvin, TX: (29.42385, -95.2441)
  • Atascocita, TX: (29.99883, -95.1766)
  • Baytown, TX: (29.7355, -94.97743)
  • Channelview, TX: (29.77606, -95.11465)
  • Cloverleaf, TX: (29.77828, -95.17188)
  • Deer Park, TX: (29.70523, -95.12382)
  • Friendswood, TX: (29.5294, -95.20104)
  • South Houston, TX: (29.66301, -95.23549)
  • La Porte, TX: (29.66578, -95.01937)
  • League City, TX: (29.50745, -95.09493)
  • Mission Bend, TX: (29.69384, -95.66495)
  • Missouri City, TX: (29.61857, -95.53772)
  • Pasadena, TX: (29.69106, -95.2091)
  • Pearland, TX: (29.56357, -95.28605)
  • Rosenberg, TX: (29.55718, -95.80856)
  • Spring, TX: (30.07994, -95.41716)
  • Sugar Land, TX: (29.61968, -95.63495)
  • The Woodlands, TX: (30.15799, -95.48938)

Numbering Statistics

  • Total Numbers Available: Approximately 7.8 million
  • Utilization Rate: 65%
  • Exhaust Projection: Late 2025

Network Infrastructure

Major Carriers

  • AT&T: 35%
  • Verizon: 30%
  • T-Mobile: 25%
  • Other: 10%

Services Provided

  • Landline
  • Wireless
  • VoIP

Regulatory Framework

Historical Milestones

  • 1947: Area code 713 established as one of the original area codes in Texas.
  • 1983: Area code 713 split to create area code 409.
  • 1996: Area code 713 split to create area code 281.
  • 1999: Overlay of area codes 713 and 281 with area code 832.
  • 2014: Introduction of area code 346 as an additional overlay.

Conclusion

Area code 346 plays a vital role in the telecommunications landscape of the Houston metropolitan area, supporting the region's growth and technological needs. The overlay complex ensures efficient number utilization and adherence to regulatory standards, making it a cornerstone of Texas's communication infrastructure.