Container Number Check (ISO 6346)
Free validator — the acquisition hook Runs on Bill of Lading documents only, with results deleted within 24 hours.
Check a container number
Every container number ends in a check digit computed from its first ten characters. A typo anywhere — owner code, letter, digit — changes that digit, which is how a wrong container number becomes provable instead of arguable.
What gets checked
33 Bill of Lading fields are looked for, and 24 rules run over them. Every finding names the field it applies to, so it can be fixed in the source document.
- · B/L No. (required)
- · Booking No.
- · B/L Type
- · Place of Issue
- · Date of Issue (required)
- · Shipped on Board
- · No. of Original B/L
- · Carrier
- · Shipper (required)
- · Consignee (required)
- · Notify Party
- · Delivery Agent
- · Place of Receipt
- · Port of Loading (required)
- · Port of Discharge (required)
- · Place of Delivery
- · Vessel (required)
- · Voyage No.
- · Marks & Numbers
- · No. of Packages (required)
- · Package Unit
- · Description of Goods (required)
- · Gross Weight (required)
- · Net Weight
- · Measurement
- · HS Code
- · Container Count
- · Container Type
- · Freight Terms
- · Incoterms
- · Declared Value
- · Currency
- · Place of Payment
Questions
- What does the checker verify on a container number check digit?
- Container check digits against ISO 6346, weight and unit consistency, date coherence, Incoterm and port-code sanity, required-field presence and more — 24 checks in total, each reported with the field it applies to.
- Is my document stored?
- No. The file stays in memory while it is processed and is never written to disk. The result is deleted automatically within 24 hours, and documents are never used to train models.
- How much does it cost?
- The first 3 documents every month are free. Paid plans start at $19 per month for 50 documents. A one-off Batch Pack covers 5,000 documents.