How do I track an AWB number starting with 831?

Enter your full 11-digit AWB number (831-XXXXXXXX) in the tracker at the top of this page. TraceAWB will instantly open Croatia Airlines's official cargo tracking page with your shipment pre-loaded.

What if my AWB prefix doesn't match any airline?

If your AWB prefix does not match a known airline, it may be a House AWB (HAWB) issued by a freight forwarder rather than the actual airline. For tracking on the airline's official portal, you need the Master AWB (MAWB), which your freight forwarder can provide.

Prefix Decoded

What is AWB Prefix 831?

Q: What airline has AWB prefix 831?

AWB prefix 831 belongs to Croatia Airlines (IATA code OU), based in Croatia. All air waybills issued by Croatia Airlines start with 831-XXXXXXXX.

Q: How many digits is an IATA AWB prefix?

An IATA AWB prefix is always exactly 3 digits (000–999). It is the first part of an 11-digit air waybill number in the format XXX-XXXXXXXX. Prefix 831 belongs to Croatia Airlines.

Q: Is 831 the only AWB prefix for Croatia Airlines?

Yes, 831 is the IATA-assigned AWB prefix exclusively for Croatia Airlines. Each IATA member airline has a unique 3-digit prefix. Croatia Airlines's prefix is 831, so all their air waybills follow the 831-XXXXXXXX format.

AWB prefix 831 is the IATA-assigned airline identification code for Croatia Airlines (OU), based in Croatia. Every air waybill issued by Croatia Airlines begins with the digits 831, followed by a hyphen and an 8-digit shipment serial number — giving a total of 11 digits in the format 831-XXXXXXXX.

When you see a cargo AWB beginning with 831, you can be certain it was issued by Croatia Airlines or by a freight forwarder acting on their behalf. Croatia Airlines operates as a Scheduled Cargo & Passenger Network, with its primary hub at Major International Hub (HUB). Typical air transit times range from 1 to 3 business days depending on origin and destination.

The IATA prefix system assigns a unique 3-digit code to every member airline, ensuring there is no ambiguity in airway bill identification across the global air freight network. Prefix 831 is exclusively reserved for Croatia Airlines and cannot be used by any other carrier. For detailed shipment status, use the tracker above to reach Croatia Airlines's official tracking portal instantly.

Prefix 831 — Quick Reference

Prefix Number831

Airline

Croatia Airlines

IATA CodeOU

ICAO CodeCTN

CountryCroatia

HubMajor International Hub (HUB)

AWB Format831-XXXXXXXX

Cargo TypeScheduled Cargo & Passenger Network

Transit Time1–3 days

Official SiteVisit

Format Guide

How to Read an AWB Starting with 831

The 11-digit IATA airway bill number is split into two parts separated by a hyphen. The first three digits (831) tell you instantly which airline issued it.

831

Airline Prefix
→ Croatia Airlines

-

12345678

Shipment Serial
(8 digits)

831 always identifies Croatia Airlines as the issuing carrier. The 8-digit serial is unique to each shipment. Together: 831-12345678 is a complete, valid Croatia Airlines airway bill.

Prefix Lookup

Look Up Any AWB Prefix

Have a different AWB prefix? Enter any 3-digit IATA prefix below to identify the airline and get instant tracking.

Enter Any AWB Prefix

Type the first 3 digits of your airway bill number

Prefix Range 800–899

AWB Prefixes Near 831

Not sure you have the right prefix? Browse nearby IATA AWB prefixes to find the correct airline for your air waybill.

Prefix	Airline	Country	IATA	Track
822	China United Airlines	China (People's Republic of)	KN	View
825	WORLD2FLY	Spain	2W	View
829	Bangkok Airways	Thailand	PG	View
831 You are here	Croatia Airlines	Croatia	OU	Track
832	ABX Air	United States	GB	View
838	WestJet	Canada	WS	View
839	Eastar Jet	Korea, Republic of	ZE	View
851	Hong Kong Airlines	Hong Kong (SAR), China	HX	View

Browse by Range

All AWB Prefix Ranges

IATA assigns AWB prefixes across the full 000–999 range. Browse all prefixes by range to find any airline.

000–099 100–199 200–299 300–399 400–499 500–599 600–699 700–799 800–899 900–999

← See the full AWB prefix index (all 440+ airlines)

FAQ

Frequently Asked Questions about AWB Prefix 831

What airline has AWB prefix 831? +

AWB prefix 831 belongs to Croatia Airlines (IATA code OU, ICAO code CTN), based in Croatia. All air waybills with this prefix follow the format 831-XXXXXXXX and were issued by Croatia Airlines or by a freight forwarder on their behalf.

How do I track an AWB starting with 831? +

Enter your full 11-digit AWB number — 831-XXXXXXXX — into the tracker at the top of this page and click "Track". TraceAWB identifies prefix 831 as Croatia Airlines and opens their official cargo tracking portal with your shipment pre-loaded.

What does AWB prefix 831 mean? +

In the IATA air cargo numbering system, the first three digits of any air waybill identify the issuing airline. Prefix 831 is exclusively assigned to Croatia Airlines. The remaining eight digits (after the hyphen) are the unique shipment serial number assigned to your individual cargo. The two parts together form a globally unique shipment identifier: 831-XXXXXXXX.

How many digits is an IATA AWB prefix? +

An IATA AWB prefix is always exactly 3 digits (ranging from 000 to 999). It forms the first part of an 11-digit air waybill number in the standard format XXX-XXXXXXXX. Prefix 831 identifies Croatia Airlines. IATA maintains a registry of all assigned prefixes and each is unique to one airline.

What is the difference between a Master AWB and a House AWB? +

A Master Air Waybill (MAWB) is issued by the airline — in this case Croatia Airlines — directly to the freight forwarder. It begins with the airline's prefix: 831. A House Air Waybill (HAWB) is issued by the freight forwarder to the individual shipper and uses the forwarder's own numbering system. For tracking on Croatia Airlines's official portal, you need the MAWB starting with 831-. If you only have a HAWB, ask your freight forwarder for the corresponding MAWB.

Is 831 the only AWB prefix for Croatia Airlines? +

Yes. 831 is the single IATA-assigned AWB prefix exclusively for Croatia Airlines. IATA assigns one unique 3-digit prefix per airline. No other carrier uses prefix 831, so whenever you see an airway bill starting with 831, it is guaranteed to be a Croatia Airlines shipment.

What if my 831 AWB shows no tracking status? +

Tracking status for a 831 AWB may not appear immediately after booking. It becomes visible only after the cargo has been physically accepted at a Croatia Airlines cargo terminal and the AWB has been activated in their system. This typically takes 2–8 hours after acceptance. If your AWB still shows no status after 12 hours, contact Croatia Airlines cargo customer service or your freight forwarder directly.