What is the country code for Pennsylvania (PA)?

The country code for Pennsylvania (PA) is +1, as it follows the North American Numbering Plan (NANP).

How are phone numbers structured in Pennsylvania?

Phone numbers in Pennsylvania follow the NANP format: +1 NXX NXX XXXX, where 'N' is any digit from 2 to 9 and 'X' is any digit from 0 to 9. The structure includes a 3-digit area code, a 3-digit central office code, and a 4-digit station number.

What are the dialing procedures for international calls to Pennsylvania?

To make an international call to Pennsylvania, dial your country's international prefix (e.g., 011 from the U.S.), followed by the country code +1, the 3-digit area code, and the 7-digit local number. For example, to call a number in Pennsylvania from the UK, you would dial 00 1 215 555 1234.

Is number portability supported in Pennsylvania?

Yes, Pennsylvania supports number portability, allowing users to retain their phone numbers when switching service providers. The process is managed by the receiving service provider in coordination with the current provider.

What are the major telecom operators in Pennsylvania and their area code coverage?

Major telecom operators in Pennsylvania include Verizon, AT&T, Comcast, T-Mobile, and Vitel Global. These operators provide services statewide, covering various area codes such as 215, 267, 412, 724, and others.

What is the country code for Pennsylvania phone numbers?

The country code for Pennsylvania phone numbers is +1.

How many digits are in a Pennsylvania phone number?

A Pennsylvania phone number has 11 digits, including the country code. The format is +1 NXX NXX XXXX.

What are the area codes for Southeast Pennsylvania?

The area codes for Southeast Pennsylvania are 215, 267, 445, 484, 610, and 835.

Can I keep my phone number if I switch service providers in Pennsylvania?

Yes, Pennsylvania supports number portability, allowing you to retain your phone number when switching service providers.

What is the international dialing prefix for calls from Pennsylvania?

The international dialing prefix for calls from Pennsylvania is 011.

What is a toll-free number format in Pennsylvania?

A toll-free number in Pennsylvania follows the format +1 800 XXX XXXX.

Which operators provide mobile services in Pennsylvania?

Major operators providing mobile services in Pennsylvania include Verizon, AT&T, and T-Mobile.

What regular expression can be used to validate Pennsylvania phone numbers?

To validate Pennsylvania phone numbers, use the regular expression: ^\+1[2-9]\d{2}[2-9]\d{2}\d{4}$.

What is the national dialing prefix for calls within the United States, including Pennsylvania?

The national dialing prefix for calls within the United States is 1.

What are the area codes for Northeast Pennsylvania?

The area codes for Northeast Pennsylvania are 570 and 272.

What is the process for porting a phone number in Pennsylvania?

The porting process is initiated by the receiving service provider, who coordinates with the current provider to transfer the number.

Are there any special number formats for premium rate services in Pennsylvania?

Yes, premium rate numbers in Pennsylvania follow the format +1 900 XXX XXXX.

How do I make a local call within Pennsylvania?

To make a local call within Pennsylvania, dial the 10-digit number, including the area code.

What is the role of the Pennsylvania Public Utility Commission regarding phone numbers?

The Pennsylvania Public Utility Commission is responsible for the allocation and management of telephone numbers within the state.

What is a central office code in Pennsylvania phone numbers?

The central office code is a 3-digit code that follows the area code in Pennsylvania phone numbers.

Can international callers reach Pennsylvania numbers directly?

Yes, international callers can reach Pennsylvania numbers by dialing +1 followed by the 10-digit number.

What is the purpose of ITU-T E.164 recommendations?

ITU-T E.164 recommendations standardize international numbering plans to ensure global interoperability.

Do all calls in Pennsylvania require 10-digit dialing?

Yes, due to area code overlays, 10-digit dialing is required even for local calls in Pennsylvania.

What is a station number in the context of Pennsylvania phone numbers?

The station number is the last 4 digits of a Pennsylvania phone number, completing the format +1 NXX NXX XXXX.

Pennsylvania Phone Numbers: Formats, Dialing Rules, and Telecom Insights

Quick Reference

Country: United States (Pennsylvania)
Country Code: +1
International Prefix: 011
National Prefix: 1

Overview

Discover the comprehensive guide to Pennsylvania's phone number system. This article provides essential information on number formats, dialing procedures, and technical considerations for telecom professionals, developers, and users.

Number Formats

General Number Structure

Pennsylvania follows the North American Numbering Plan (NANP) with a fixed-length format:

Country Code: +1
Area Code: 3 digits
Central Office Code: 3 digits
Station Number: 4 digits

Format: +1 NXX NXX XXXX

Where:

N is any digit from 2 to 9.
X is any digit from 0 to 9.

Area Codes in Pennsylvania

Pennsylvania is divided into several area codes, each serving different regions:

Region	Area Codes
Northwest	814, 582
Northeast	570, 272
Southeast	215, 267, 445, 484, 610, 835
Central	717, 223
Western	412, 724, 878

Example Number Formats

Type	Example Format	Examples
Landline	+1 NXX NXX XXXX	+1 215 555 1234
Mobile	+1 NXX NXX XXXX	+1 267 555 6789
Toll-Free	+1 800 XXX XXXX	+1 800 123 4567
Premium Rate	+1 900 XXX XXXX	+1 900 555 7890

Regular Expressions

For developers, here are some useful regular expressions to validate Pennsylvania phone numbers:

General Format:
```
^\+1[2-9]\d{2}[2-9]\d{2}\d{4}$
```

Toll-Free Numbers:

^\+1(800|888|877|866|855|844|833|822)\d{7}$

Premium Rate Numbers:
```
^\+1(900)\d{7}$
```

Dialing Procedures

Domestic Calls

Within Pennsylvania: Dial the 10-digit number (area code + local number). Example: 215 555 1234.
Interstate Calls: Dial 1 followed by the 10-digit number. Example: 1 215 555 1234.

International Calls

Outgoing: Dial 011 (international prefix), followed by the country code, and then the destination number. Example: Calling the UK: 011 44 20 7946 0958.
Incoming: International callers should dial +1 followed by the 10-digit number. Example: +1 215 555 1234.

Number Portability

Pennsylvania supports number portability, allowing users to retain their phone numbers when switching service providers. This applies to both mobile and fixed-line numbers.

Porting Process: Initiated by the receiving service provider, who will coordinate with the current provider to transfer the number.
Regulatory Oversight: Managed by the Federal Communications Commission (FCC) and the Pennsylvania Public Utility Commission (PUC).

Major Telecom Operators

The following are major telecom operators providing services in Pennsylvania:

Operator	Service Type	Area Codes Covered
Verizon	Landline, Mobile	Statewide
AT&T	Landline, Mobile	Statewide
Comcast	Landline, VoIP	Statewide
T-Mobile	Mobile	Statewide
Vitel Global	VoIP, Virtual Numbers	Various regions

ITU-T Recommendations

Pennsylvania's numbering plan adheres to ITU-T E.164 recommendations, which standardize international numbering plans and ensure global interoperability.

Number Allocation and Management

The Pennsylvania Public Utility Commission (PUC) is responsible for the allocation and management of telephone numbers within the state. They work in conjunction with the North American Numbering Plan Administrator (NANPA) to ensure numbers are fairly distributed and efficiently used.

Official Website: www.puc.pa.gov

Technical Restrictions and Special Cases

Golden Numbers

Pennsylvania does not have a formal system for "golden numbers," but certain desirable number combinations may be reserved or sold at a premium by service providers.

Number Blocking

Number blocking services are available for both landline and mobile users, allowing them to block unwanted calls. This is a standard feature across most telecom providers.

Technical Considerations

For developers or systems administrators dealing with Pennsylvania phone numbers, consider the following:

Validation: Use regular expressions to validate phone numbers according to the NANP format.
Portability: Ensure systems are capable of handling number portability, including the transfer of numbers between service providers.
Area Code Overlays: Be aware of area code overlays, which require 10-digit dialing even for local calls.
Internationalization: Implement support for E.164 formatting to ensure compatibility with international systems.

For the most up-to-date information on telecommunications regulations in Pennsylvania, please consult the official website of the Pennsylvania Public Utility Commission (PUC).

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