Every call, message, and mobile activity leaves a trace. One of the most important digital footprints maintained by telecom companies is the CDR, or Call Data Record. These records contain information about each phone call made or received — including the time, duration, and phone numbers involved.
If you live in Pakistan and want to access Call Data Record (CDR) information, IMSIData is one of the most reliable online platforms for checking SIM ownership and CNIC details. It offers quick, accurate, and PTA-approved information, all for free.
This guide explains everything you need to know about Call Data Records, how they work, why they’re important, and how you can check CDR details online using IMSIData in 2026.
What is a Call Data Record (CDR)?
A Call Data Record (CDR) is a digital log created by telecom companies that contains technical and billing details about phone calls and messages. These records are automatically generated whenever a user makes or receives a call, sends an SMS, or uses mobile data.
CDRs don’t include the actual voice or message content — they contain metadata or details about the communication.
A typical CDR includes:
Caller and receiver numbers
Call date and time
Call duration
Call type (incoming, outgoing, or missed)
Cell tower or area location
SIM number (IMSI)
IMEI number of the mobile device
Network used (2G, 3G, 4G, or 5G)
Telecom operators in Pakistan — including Jazz, Zong, Ufone, Telenor, and SCOM — keep CDRs for billing, investigation, and record-keeping purposes.
Why CDRs Are Important
CDRs are more than just call logs. They play a vital role in national security, billing accuracy, and fraud prevention.
Law Enforcement and Investigation
Government agencies and law enforcement departments use CDRs to trace calls, track criminal activities, and identify suspects. These records help them link call patterns, determine communication networks, and collect solid evidence.
Fraud Detection
Telecom companies rely on CDRs to identify suspicious call activity or misuse of SIM cards. This helps prevent fraudulent schemes, spam calls, or SIM cloning.
Billing Verification
CDRs ensure accurate billing. If a customer disputes charges, the telecom company can verify exact call durations and timestamps.
Network Improvement
Operators use CDRs to assess dropped calls, signal quality, and network performance. This helps improve telecom service quality.
Personal Use
Individuals often use ownership lookup services like IMSIData to verify unknown callers or check the identity of SIM owners.
Understanding IMSI and Its Role in CDR
The IMSI (International Mobile Subscriber Identity) is a unique number assigned to every SIM card. It identifies the subscriber within the network.
When you make a call, the IMSI is automatically recorded in the CDR. This allows telecom operators to track which SIM card initiated the call.
IMSIData uses this information to accurately provide ownership details linked to phone numbers, including CNIC and network data.
IMSIData – A Reliable Platform for CDR and SIM Ownership Information
IMSIData is a trusted online platform that helps users in Pakistan access SIM and CNIC ownership details safely. It connects with PTA-approved data sources, ensuring reliable and verified results.
Key Features of IMSIData
Free and unlimited access
Fast search results
Updated with verified PTA data
Works with all major networks (Jazz, Zong, Telenor, Ufone, and SCOM)
Simple and mobile-friendly design
With IMSIData, you can:
Find out who owns a mobile number
Check which CNIC a SIM is registered under
View SIM registration location and network
Access summarized CDR-type information like SIM activity overview
How to Check Call Data Record (CDR) Online Using IMSIData
Getting access to basic CDR details in Pakistan is simple using IMSIData. You can quickly check SIM ownership and related data from your phone or computer.
Step-by-Step Guide
Step 1: Visit IMSIData
Go to the official IMSIData website. On the homepage, you’ll find a search bar to start your lookup.
Step 2: Enter the Mobile Number or CNIC
Type in the phone number or CNIC you want to check. Use the correct number format (03XXXXXXXXX).
Step 3: Click Search
Press “Search” to process your request. The site will fetch information from verified data sources.
Step 4: View Results
Within seconds, you’ll see:
Name of the SIM owner
CNIC number linked with the SIM
Network and operator details
SIM registration location
While full CDR logs (detailed call-by-call data) are not public for privacy reasons, IMSIData gives legal and publicly available details that help verify ownership safely.
Legal Access to CDRs in Pakistan
Access to full CDRs is highly regulated in Pakistan. Only authorized entities can obtain them.
Who Can Access Full CDRs?
Law enforcement agencies (FIA, Cybercrime Wing, Police)
PTA (Pakistan Telecommunication Authority)
Telecom companies (for billing and internal investigations)
IMSIData only provide summarized, legal, and public-level data. They don’t display or share private call logs.
Always use such services responsibly and within legal boundaries.
PTA Regulations and CDR Privacy in Pakistan
The Pakistan Telecommunication Authority (PTA) is responsible for managing and regulating all SIM and telecom data. According to PTA rules:
Each SIM must be registered to a valid CNIC.
Users can check how many SIMs are linked to their CNIC.
Full CDRs cannot be shared without proper authorization.
IMSIData operate legally under these guidelines, helping users verify information without violating privacy.
Benefits of Using IMSIData
Using IMSIData gives you access to reliable and legal telecom information without needing special permissions. Here are some reasons users prefer it:
Free and Accessible
You don’t need to pay or subscribe. It’s completely free to use.
Accurate and Updated
IMSIData relies on trusted, verified records that are regularly refreshed.
User-Friendly Interface
It’s simple enough for anyone to use, regardless of technical skills.
Time-Saving
Instead of visiting telecom service centers, you can check details online instantly.
Safe and Legal
The site respects privacy laws and only provides publicly available information.
Difference Between CDR, IMSI, and IMEI
Many people confuse these three terms. Here’s a quick breakdown:
| Term | Full Form | Description | Purpose |
|---|---|---|---|
| CDR | Call Data Record | Record of calls and messages with metadata | Used for call tracking and billing |
| IMSI | International Mobile Subscriber Identity | Unique code linked to a SIM card | Identifies the subscriber |
| IMEI | International Mobile Equipment Identity | Unique ID of a mobile phone | Identifies the device itself |
All three work together whenever you make a call — the CDR logs the event, the IMSI identifies the SIM, and the IMEI identifies the device.
How IMSIData Helps Individuals and Businesses
IMSIData is helpful not only for personal use but also for organizations.
For Individuals
Identify unknown callers
Verify SIM ownership under a CNIC
Avoid fraud or SIM misuse
For Businesses
Validate employee contact information
Manage telecom records efficiently
Prevent misuse of corporate numbers
Can You Get Full CDR Online for Free?
No website or service can legally provide full CDR logs for free because this information is private and protected.
However, IMSIData allows you to view CDR-like summaries, such as SIM owner details, CNIC information, and telecom network data.
For complete call logs, you must contact your telecom operator directly and submit a formal request or obtain a court order.
How Long Telecom Companies Keep CDRs
Telecom companies in Pakistan are required to keep Call Data Records for at least one year. This period may extend depending on legal or regulatory requirements.
This ensures authorities can access historical data when needed for investigations or billing verification.
Common Uses of CDR Data
Here’s how CDR data is commonly used in Pakistan:
Tracing phone numbers involved in criminal activity
Investigating missing person cases
Monitoring telecom traffic patterns
Analyzing call durations and frequency
Enhancing network performance
CDR data is a valuable tool for both security and operational purposes.
Protecting Your Privacy Online
Even though CDR and SIM data are useful, you should always protect your privacy.
Tips to Stay Safe:
Never share your CNIC or number on random websites
Use trusted sources like IMSIData
Don’t respond to suspicious calls or messages
Avoid giving verification codes or OTPs to unknown people
Responsible use of digital tools helps protect your identity and data.
Future of CDR and Telecom Data in Pakistan (2026 and Beyond)
The future of telecom in Pakistan is rapidly changing. With 5G technology and AI-driven analytics, CDRs will continue to play an important role in improving network security and efficiency.
Telecom companies will use CDR and IMSI data to:
Detect fraud in real time
Improve signal strength and quality
Support smarter billing and digital identification systems
IMSIData will continue providing safe, accessible telecom insights for the public as technology evolves.
A CDR (Call Data Record) is a log that shows details about calls, such as time, duration, and numbers involved. It does not include the conversation.
You can view summary details using IMSIData. However, full CDR logs can only be accessed through telecom companies or authorized authorities.
Yes. IMSIData provides PTA-approved public telecom data. It’s secure and does not share private call information.
Go to IMSIData, enter a number or CNIC, and view the registered name, network, and SIM location.
Yes. With IMSIData, you can identify the SIM owner of a number and verify their details safely and legally.
Conclusion
A Call Data Record (CDR) is one of the most valuable tools in modern telecom systems. It supports investigations, ensures billing accuracy, and helps fight fraud.
While complete CDRs are not publicly available due to privacy laws, you can easily verify SIM and CNIC details using IMSIData, a free, legal, and reliable platform in Pakistan.
Whether you want to identify an unknown caller, confirm SIM ownership, or explore telecom data — IMSIData gives you fast, accurate, and PTA-approved information anytime.