Area Code 4543 – Khushab

Overview of Area Code 4543 (Khushab, Pakistan)

Area code 4543 is a geographic National Destination Code (NDC) assigned to the city of Khushab and its surrounding administrative areas within the Punjab province of Pakistan. It is part of the national numbering plan administered by the Pakistan Telecommunication Authority (PTA) under the ITU-T E.164 international standard. The code is used for fixed-line (PSTN) services, including basic telephony and DSL broadband connections provided by Pakistan Telecommunication Company Limited (PTCL) and other licensed operators.

Geographic Coverage and Jurisdiction

The 4543 area code covers Khushab District, which includes the city of Khushab itself, as well as nearby towns such as Jauharabad, Hadali, and Noorpur Thal. The district is situated in the Sargodha Division of Punjab, approximately 180 kilometers northwest of Lahore. The code is geographically significant: it routes calls to a specific physical exchange area, and local tariffs apply for calls within the same NDC.

Dialing Formats

For callers within Pakistan, the national dialing format is 04543-XXXXXX (where X represents the subscriber number, typically 6 digits). The leading 0 is the trunk prefix used to access the PSTN network. For international callers, the format is +92 4543 XXXXXX – note that the trunk prefix (0) is omitted, and the country code for Pakistan is +92. Example: a local number in Khushab might be 04543-712345, which becomes +92 4543 712345 for international dialing.

Overlay and Numbering Considerations

Currently, there is no overlay plan for 4543; it is the sole geographic code for the Khushab exchange area. Subscriber numbers are typically 6 digits long, making the total national significant number (NSN) 9 digits (excluding the trunk prefix). Mobile numbers in Pakistan are separate and non-geographic, starting with 3 (e.g., 0300, 0312), and are not affected by this area code.

Caller Instructions

• Local callers within Khushab can dial the subscriber number directly without the area code if the exchange supports local dialing, but for clarity and reliability, it is recommended to use the full national format 04543-XXXXXX.
• Domestic long-distance callers from other cities in Pakistan must dial 04543-XXXXXX.
• International callers should dial +92 4543 XXXXXX from their respective country.

For businesses, ensuring that the correct area code is displayed on websites and marketing materials is crucial for customer reach. Always verify the number with the subscriber, as number portability may allow fixed-line numbers to be transferred to other operators, but the geographic code remains tied to the exchange area.