Area Code 9664 – D.I. Khan

Overview of Area Code 9664

Area code 9664 is a geographic National Destination Code (NDC) assigned to the Dera Ismail Khan (D.I. Khan) region in the Khyber Pakhtunkhwa province of Pakistan. It is part of the national numbering plan under the ITU-T E.164 recommendation, managed by the Pakistan Telecommunication Authority (PTA). The code routes calls to fixed-line (PSTN) subscribers within the D.I. Khan telephone exchange area.

Geographic Coverage and Administration

D.I. Khan is a major city and district headquarters located on the western bank of the Indus River. The area code 9664 covers the urban and suburban zones of D.I. Khan city, including surrounding towns and rural exchanges that are part of the district's telecommunications network. The region is administratively divided into tehsils, and the code applies to all fixed-line connections within the PTA-defined local calling area.

Dialing Formats

For callers within Pakistan, the national trunk prefix 0 is used before the area code. The complete national significant number (NSN) is ten digits: 0 9664 XXXXXX (where XXXXXX represents the six-digit subscriber number). For example, a local number might be 0 9664 123456.

For international callers, the country code +92 replaces the trunk prefix. The international format is +92 9664 XXXXXX, e.g., +92 9664 123456. When dialing from abroad, omit the leading '0' of the national prefix.

Caller Instructions

• Local callers (within D.I. Khan): If you are calling from a fixed-line phone within the same exchange area, you may dial only the six-digit subscriber number (XXXXXX). However, due to varying local dialing regulations, it is recommended to use the full national format 0 9664 XXXXXX to ensure connectivity.
• National callers (from other cities in Pakistan): Dial 0 9664 XXXXXX.
• International callers: Dial your country's international access code (e.g., 00 or +), then 92 9664 XXXXXX (without the leading 0).

Overlay and Numbering Considerations

As of the current numbering plan, there is no overlay code for D.I. Khan; 9664 remains the sole geographic code for the area. Subscriber numbers are typically six digits, but some older connections may have fewer digits. In such cases, the national dialing format adjusts accordingly. Always verify the complete number with the called party to avoid misdialing.

Fixed-line services in D.I. Khan are provided by Pakistan Telecommunication Company Limited (PTCL) and other licensed operators. VoIP and wireless local loop (WLL) services may also be assigned numbers under this code, but they are still considered geographic for routing purposes.