How to Track a Container Number: Complete Guide 2025

Container tracking has become an essential part of modern logistics and supply chain management. Whether you're a shipper, freight forwarder, or importer, knowing how to track your container in real-time can save you time, money, and stress. In this comprehensive guide, we'll walk you through everything you need to know about tracking containers by their unique identification numbers.

What is a Container Number?

A container number, also known as a container ID or box number, is a unique 11-character alphanumeric code assigned to every shipping container in the world. This standardized system follows the ISO 6346 standard, ensuring that every container can be identified globally.

The container number consists of:

• Owner Code (4 letters): The first three letters represent the container owner, followed by a category identifier (usually 'U' for freight containers)
• Serial Number (6 digits): A unique numeric sequence assigned by the owner
• Check Digit (1 digit): A validation digit calculated using a specific algorithm

For example, in the container number MRKU4976416:

• MRKU = Owner code (Maersk)
• 497641 = Serial number
• 6 = Check digit

Step-by-Step Guide to Track Your Container

Step 1: Locate Your Container Number

Your container number can be found on:

• Bill of Lading (B/L)
• Booking confirmation email
• Commercial invoice
• Packing list
• Shipping instructions from your freight forwarder

Step 2: Choose a Tracking Platform

You have several options for tracking your container:

• Carrier websites: Each shipping line (Maersk, MSC, COSCO, etc.) offers tracking on their official website
• Third-party tracking platforms: Services like Ocean by Traqo aggregate tracking from multiple carriers, providing a unified experience
• Freight forwarder portals: Your logistics provider may offer integrated tracking

Step 3: Enter Your Container Number

On your chosen platform, enter the 11-character container number exactly as it appears on your documents. Most platforms will validate the check digit automatically.

Step 4: Review Tracking Information

You'll typically see:

• Current location of the container
• Vessel name and voyage number
• Port of loading and discharge
• Estimated time of arrival (ETA)
• Historical movement events

Why Use Ocean by Traqo for Container Tracking?

While carrier websites work well for single shipments, managing multiple containers across different shipping lines becomes challenging. Ocean by Traqo solves this problem by offering:

• Multi-carrier tracking: Track containers from Maersk, MSC, CMA CGM, Hapag-Lloyd, and 100+ other carriers in one place
• Real-time updates: Get instant notifications when your container status changes
• Historical data: Access complete shipment history for analytics and reporting
• API integration: Connect tracking data directly to your TMS or ERP systems
• No registration required: Start tracking immediately without creating an account

Common Container Tracking Statuses Explained

Understanding tracking terminology helps you interpret your shipment status:

Tips for Effective Container Tracking

1. Save your reference numbers: Keep container numbers, BL numbers, and booking references organized
2. Set up alerts: Use platforms like Ocean by Traqo to receive automatic notifications
3. Track early and often: Start tracking as soon as you have a container number
4. Verify the check digit: Ensure your container number is entered correctly
5. Cross-reference with your freight forwarder: They may have additional visibility

Conclusion

Container tracking is essential for modern supply chain management. Whether you're tracking a single container or hundreds of shipments, having the right tools makes all the difference. Ocean by Traqo provides the comprehensive visibility you need to manage your shipments effectively.

Ready to start tracking? Visit traqocontainer.com and enter your container number to see it in action.