The 0300 network code in Pakistan belongs to Jazz, formerly known as Mobilink. If someone calls you from a number starting with 0300, that number was originally issued by Jazz. It is one of the oldest and most recognised mobile prefixes in the country, and millions of Pakistanis still use it today.
This guide explains everything about the 0300 prefix, what it means, which other codes belong to Jazz, and how to read Pakistan’s full SIM code system in 2026.
What Is the 0300 Network Code and Who Owns It?
The 0300 network code in Pakistan is registered with Jazz (formerly Mobilink), one of the largest and oldest mobile network operators in the country. The 0300 code was one of the first mobile codes issued in Pakistan when mobile networks were first introduced.
Jazz is Pakistan’s largest telecom operator, and 0300 is one of its oldest and most widely used prefixes. When you see a number starting with 0300, you can be fairly sure it started life as a Jazz SIM.
Jazz was formed through the merger of Mobilink and Warid and serves millions of customers nationwide. Its prefixes include both traditional Mobilink and former Warid series.
All Jazz Network Codes in Pakistan
Jazz does not just own the 0300 prefix. The company operates on the following network codes: 0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307, 0308, 0309.
Jazz/Mobilink SIM codes usually begin with 030x and also include many old Warid-prefix 032x ranges after the merger, such as 0320, 0321, 0322, 0323, and 0324.
So if you see any number starting with 030x or 032x, it was originally a Jazz number. This matters when you are choosing a call or SMS package, since on-network rates are often cheaper than off-network rates.
How Pakistan’s SIM Code System Works
SIM codes are the first four digits of a mobile phone number that indicate the telecom operator to which the number was originally assigned. In Pakistan, the Pakistan Telecommunication Authority (PTA) assigns number ranges to each mobile operator, and each company then uses those SIM codes for its own customers.
These prefixes help users quickly identify a network before making calls, purchasing packages, or checking compatibility with network-specific offers.
Here is a quick summary of all major network codes in Pakistan for 2026:
- Jazz (Mobilink/Warid): 030x and 032x
- Zong (China Mobile Pakistan): 0310 to 0319 with superior nationwide 4G coverage
- Ufone (PTCL): 033x series, such as 0330, 0331, and 0333
- Telenor Pakistan: 0340 to 0348
- SCOM: SCOM operates exclusively in Azad Jammu and Kashmir and Gilgit-Baltistan regions, using codes like 0350 and 0355
- Onic: The 0370 prefix belongs to Onic, Pakistan’s digital-first mobile network service.
Can a 0300 Number Be on a Different Network?
Yes, it can. This is because of Mobile Number Portability (MNP). Mobile Number Portability allows users to switch networks while keeping their existing phone number. A number beginning with 0300 originally belongs to Jazz. However, the user may have ported the number to another operator. Therefore, a SIM code identifies the original network assignment but may not always reflect the current network after porting.
The original prefix does not change because PTA assigns it to a telecom company permanently. So the prefix tells you the original network, but not necessarily the one the person is using right now.
If you need to know the current active network of a number (for example, to know which package to buy), you can use a network lookup tool or contact your operator directly.
How to Check Your Own Jazz Number
If you have a 0300 SIM and want to confirm your own number, it is easy. The USSD code to check your Jazz SIM number is *99#. That is the Jazz SIM number check code for Pakistan. Just dial it and your number will appear on screen within seconds.
For more Jazz tips, you can also read about the Jazz balance save code *275# that protects your prepaid credit from being used on unwanted services.
Does the 0300 Code Tell You the City or Location?
No, the 0300 code is not location-specific. These numbers can be used in any city or province of Pakistan including Karachi, Lahore, Islamabad, Rawalpindi, Multan, Faisalabad, Peshawar, Quetta, and more. The prefix only tells you the network, not where the person lives.
Why Knowing the 0300 Network Code Matters
Knowing the 0300 network code is useful in everyday life. When you receive a call from an unknown number, the prefix tells you which operator it came from. This helps you:
- Choose the right call package (on-net calls are usually cheaper)
- Identify whether to subscribe to a Jazz bundle before calling back
- Avoid unexpected charges when calling cross-network
Understanding SIM codes makes it easier to identify telecom operators and select appropriate call or internet packages.
You can find a full list of all Jazz packages on the official Jazz website. The Pakistan Telecommunication Authority (PTA) is the official body that assigns all SIM code ranges to operators in Pakistan.
If you also use WhatsApp a lot, check out our guide on the Jazz WhatsApp monthly package and how to activate it with a single code.
Frequently Asked Questions
Which network does 0300 belong to in Pakistan?
Yes, 0300 is a Jazz network code in Pakistan. Numbers starting with 0300 belong to Jazz, formerly known as Mobilink.
Is 0300 only for Jazz, or can it be ported to another network?
Due to Mobile Number Portability (MNP) in Pakistan, a 0300 number may no longer be on Jazz, even though it started there. The prefix shows the original network, but the current active network could be different after porting.
What are all the Jazz network codes in Pakistan?
Jazz (Mobilink) uses prefixes 0300 to 0309 and 0320 to 0325 across Pakistan. All of these were assigned by PTA and remain part of the Jazz network family.
How do I check my number if I have a 0300 SIM?
If you want to check your Jazz mobile phone number, dial *99# on your Jazz mobile phone. Wait a few seconds, and your Jazz phone number will be shown on the screen.
