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Phone Numbers in Minnesota: Formats and Dialing Rules
Quick Reference
Country: United States (Minnesota)
Country Code: +1
International Prefix: 011
National Prefix: 1
Overview
This comprehensive guide offers a detailed look at Minnesota's telephone numbering plan, including number structures, dialing procedures, and number portability. It's an essential resource for telecom professionals, developers, and systems administrators.
Number Formats
General Number Structure
Country Code: +1 (United States)
Area Code: 3 digits (e.g., 612)
Subscriber Number: 7 digits (e.g., 123-4567)
Full Number: 10 digits (e.g., 612-123-4567)
Area Codes in Minnesota
Area Code
Coverage Area
Type
612
Minneapolis and surrounding areas
Geographic
651
St. Paul and eastern metro
Geographic
763
Northwest suburbs of Minneapolis
Geographic
952
Southwest suburbs of Minneapolis
Geographic
218
Northern Minnesota
Geographic
320
Central Minnesota
Geographic
507
Southern Minnesota
Geographic
924
Southern Minnesota (from July 2024)
Geographic
Number Formats by Type
Type
Format
Example
Local Calls
XXX-XXXX
123-4567
Long Distance
1-XXX-XXX-XXXX
1-612-123-4567
Toll-Free
1-800/888/877/866/855/844-XXX-XXXX
1-800-123-4567
Premium Rate
1-900-XXX-XXXX
1-900-123-4567
Emergency
911
911
Special Services
211, 311, 511, 711, 811, 988
211, 311, 511, 711, 811, 988
Regular Expressions for Validation
General Number (10 digits):
^[2-9]\d{2}-\d{3}-\d{4}$
Long Distance (11 digits):
^1-[2-9]\d{2}-\d{3}-\d{4}$
Toll-Free:
^1-(800|888|877|866|855|844)-\d{3}-\d{4}$
Premium Rate:
^1-900-\d{3}-\d{4}$
Emergency:
^911$
Dialing Procedures
Domestic Calls
Local Calls: Dial the 7-digit subscriber number (e.g., 123-4567) within the same area code.
Long Distance Calls: Dial 1 + area code + 7-digit number (e.g., 1-612-123-4567).
Outgoing: Dial the international access code (011), followed by the country code, area code (if applicable), and the subscriber number.
Example: To call a number in the UK: 011-44-20-7123-4567.
Incoming: Dial +1 followed by the area code and subscriber number.
Example: +1-612-123-4567.
Number Portability
Minnesota supports number portability, allowing users to retain their phone numbers when switching service providers. This feature has been available since 2003 for both mobile and fixed-line numbers.
Major Telecom Operators and Number Ranges
Operator
Common Prefixes (Area Code + Prefix)
AT&T
Varies by area code
Verizon
Varies by area code
T-Mobile
Varies by area code
US Cellular
Varies by area code
CenturyLink
Varies by area code
Regulatory Body
The regulatory body responsible for telecommunications in Minnesota is the Minnesota Public Utilities Commission (PUC). For the most up-to-date information, visit their official website.
Recent or Upcoming Changes to the Numbering Plan
Introduction of Area Code 924
Permissive Dialing: Begins January 30, 2024. Users can dial either 7 or 10 digits for local calls.
Mandatory 10-Digit Dialing: Begins July 30, 2024. All local calls must be dialed using 10 digits.
New Assignments: From August 30, 2024, new telephone lines may be assigned numbers with the 924 area code.
Technical Considerations
ITU-T Standards
Minnesota's phone numbering system adheres to the ITU-T E.164 standard, which defines the format for international public telecommunication numbering.
Number Allocation and Management
The North American Numbering Plan Administration (NANPA) is responsible for the allocation and management of phone numbers in Minnesota. NANPA ensures that numbering resources are used efficiently and meet the needs of the telecommunications industry.
Special Cases
Golden Numbers: There are no specific regulations for golden numbers in Minnesota.
Number Blocking: Certain prefixes, such as those used for premium-rate services (e.g., 900 numbers), may be blocked by some service providers.