Track a container by number, ISO 6346 format and check digit explained
How the four letter owner code, six digit serial and check digit work, and how to find the line and the latest status from one container number.
Shipment tracking blog for shippers, importers and 3PLs
Practical guides for people who move freight every day: how tracking numbers are built, what each mode lets you see, and how to turn shipment events into fewer delays, lower fees and better carrier conversations.
Latest articles
- Container numbers, PRO numbers and air waybills explained digit by digit.
- Buyer guidance for teams comparing visibility tools.
- Carrier performance, demurrage, detention and mode differences in plain terms.
What is a PRO number and how to track LTL freight with it
Where the PRO number comes from, how formats differ by LTL carrier, and what terminal, dispatch and delivery events you can expect to see.
Air waybill number explained, airline prefixes and tracking
The 3 digit airline prefix, the 8 digit serial with its mod 7 check digit, and how to follow air cargo from acceptance to arrival.
Supply chain visibility software buyer guide for mid-sized shippers
The questions to ask before you buy: modes covered, ETA quality, alerts, integrations, pricing model and how fast your team can start.
Carrier on-time performance, how to measure it and use it in rate talks
How to define on-time pickup and delivery, build a lane level scorecard and bring clean numbers to your next carrier review.
Demurrage and detention, how container visibility cuts the fees
What triggers demurrage and detention, how last free day is set, and which container milestones help you return equipment in time.
LTL vs FTL tracking, what you can and cannot see
Why LTL tracking is terminal based and FTL tracking can be close to live, and how to set expectations with customers for each.
Track every shipment in one dashboard
Paste a container, PRO, air waybill or parcel number and see the carrier, the number anatomy and the product view in seconds. See shipment tracking software pricing when you are ready for live events and ETA.