Area Code 217: Comprehensive Guide to Illinois' Central Region
Area code 217 is a key part of the North American Numbering Plan (NANP), covering central Illinois, including Springfield, Champaign, and Urbana.
Overview of Area Code 217
Basic Technical Specifications
- NPA Code: 217
- Type: Overlay (with area code 447)
- Implementation Date: 1947 (original), 2021 (overlay)
- State: Illinois
Geographic Coverage
Area code 217 encompasses a large portion of central Illinois, notably including the state capital, Springfield.
Major Cities
- Champaign, IL: 40.11642, -88.24338
- Charleston, IL: 39.49615, -88.17615
- Danville, IL: 40.12448, -87.63002
- Decatur, IL: 39.84031, -88.9548
- Quincy, IL: 39.9356, -91.40987
- Springfield, IL: 39.80172, -89.64371
- Urbana, IL: 40.11059, -88.20727
Numbering and Utilization
- Total Numbers Available: [Number]
- Utilization Rate: [Percentage]
- Exhaust Projection: [Date]
Telecommunications Infrastructure
Major Carriers
[List of major carriers with market share percentages]
Services Offered
- Landline
- Wireless
- VoIP
Regulatory Framework
- Regulatory Body: Illinois Commerce Commission
- Dialing Requirements: Ten-digit dialing for local calls
- NANPA Regulations: Area code 447 was added as an overlay to 217 in 2021 to ensure a continuous supply of telephone numbers.
Historical Context
Key Milestones
- 1947: Area code 217 established as one of the original North American area codes.
- 1951: Boundary shift moved most of the southern portion of Metro East to area code 618.
- 1956: Northern portion merged with part of area code 815 to form area code 309.
- 2021: Introduction of area code 447 as an overlay to area code 217.
Conclusion
Area code 217 is vital to central Illinois' telecommunications, with the overlay of area code 447 ensuring the availability of numbers to meet increasing demand. For further details, visit the official Wikipedia page on area code 217.