Area Code 410: Comprehensive Guide to Technical Specifications and Data
Area code 410 is a key component of the North American Numbering Plan (NANP), covering the eastern half of Maryland, including the Baltimore metropolitan area and the Eastern Shore.
Overview of Area Code 410
Area code 410 was introduced on October 6, 1991, as an overlay to accommodate the growing demand for telephone numbers in Maryland.
Geographic Coverage
Area code 410 serves the eastern region of Maryland, prominently including the Baltimore metropolitan area and the Eastern Shore.
Major Cities Covered
- Annapolis, MD (Latitude: 38.97845, Longitude: -76.49218)
- Baltimore, MD (Latitude: 39.29038, Longitude: -76.61219)
- Columbia, MD (Latitude: 39.24038, Longitude: -76.83942)
- Salisbury, MD (Latitude: 38.36067, Longitude: -75.59937)
Explore more cities covered by area code 410 in the official Maryland state website.
Numbering and Utilization
- Total Numbers Available: 24 million
- Projected Exhaust Date: 2030
Network Infrastructure
Major Carriers
- Verizon
- Comcast
- Cavalier Telephone
Services Offered
- Landline
- Wireless
- VoIP
Regulatory Framework
- Regulatory Body: North American Numbering Plan Administration (NANPA)
- Dialing Requirements: Ten-digit dialing is mandatory for local calls across area codes.
Historical Milestones
- 1947: Maryland was initially assigned area code 301.
- 1991: Area code 410 was introduced, splitting from 301.
- 1997: Area code 443 was overlaid onto 410.
- 2012: Area code 667 was added as an overlay to 410/443.
Conclusion
Area code 410 plays a vital role in Maryland's telecommunications, ensuring adequate numbering resources for the Baltimore metropolitan area and the Eastern Shore. Its strategic overlays have supported the region's growing communication needs effectively.
For more information on area codes and their management, visit the Federal Communications Commission (FCC) website.