{"id":57,"date":"2026-03-22T15:51:24","date_gmt":"2026-03-22T15:51:24","guid":{"rendered":"https:\/\/tracecontainer.com\/blog\/?p=57"},"modified":"2026-03-22T15:51:25","modified_gmt":"2026-03-22T15:51:25","slug":"container-number-examples-from-every-major-shipping-line","status":"publish","type":"post","link":"https:\/\/tracecontainer.com\/blog\/container-number-examples-from-every-major-shipping-line\/","title":{"rendered":"Container Number Examples from Every Major Shipping Line"},"content":{"rendered":"\n<p>If you&#8217;re new to the shipping industry, one of the first things you&#8217;ll notice is that every container has a unique code stamped on its side, something like <strong>MSCU 123456 7<\/strong> or <strong>HLXU 890123 4<\/strong>. These aren&#8217;t random. Every letter, every digit means something specific.<\/p>\n\n\n\n<p>This guide breaks down how container numbers work, who decides them, what BIC codes are, and gives you real container number examples from every major shipping line \u2014 all in a beginner-friendly way.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"809\" src=\"https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/40-feet-standard-dry-container-in-the-container-yard.jpg\" alt=\"\" class=\"wp-image-58\" srcset=\"https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/40-feet-standard-dry-container-in-the-container-yard.jpg 1024w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/40-feet-standard-dry-container-in-the-container-yard-300x237.jpg 300w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/40-feet-standard-dry-container-in-the-container-yard-768x607.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What Is a Container Number?<\/h2>\n\n\n\n<p>A container number (also called a container ID or container code) is a standardized alphanumeric code used to uniquely identify every single shipping container in the world.<\/p>\n\n\n\n<p><strong>A container number example looks like this:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>M S C U   1 2 3 4 5 6   7\n&#91;---]  &#91;------]  &#91;-]\nOwner  Serial    Check\nPrefix  Number   Digit\n<\/code><\/pre>\n\n\n\n<p>Every container number follows this exact format, no exceptions:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>4 letters<\/strong> (Owner Code + Equipment Category Identifier)<\/li>\n\n\n\n<li><strong>6 numbers<\/strong> (Serial Number)<\/li>\n\n\n\n<li><strong>1 check digit<\/strong> (Validation number)<\/li>\n<\/ul>\n\n\n\n<p><strong>Total: 4 letters + 6 digits + 1 check digit = 11 characters<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"506\" src=\"https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/container-number-format-explained-with-infographics-1024x506.png\" alt=\"\" class=\"wp-image-61\" srcset=\"https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/container-number-format-explained-with-infographics-1024x506.png 1024w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/container-number-format-explained-with-infographics-300x148.png 300w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/container-number-format-explained-with-infographics-768x379.png 768w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/container-number-format-explained-with-infographics-1536x758.png 1536w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/container-number-format-explained-with-infographics.png 1594w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>This inforgraphic shows how Freight Container Numbers are Decided<\/em><\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Who Decides Container Numbers? (The BIC System Explained)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">What Is BIC?<\/h3>\n\n\n\n<p><strong>BIC<\/strong> stands for <strong>Bureau International des Containers et du Transport Intermodal<\/strong> \u2014 or in English, the International Container Bureau.<\/p>\n\n\n\n<p>BIC is a non-profit, intergovernmental organization based in <strong>Paris, France<\/strong>. It was founded in 1933 and is the official body responsible for registering container owner codes (called <strong>BIC Codes<\/strong>) worldwide.<\/p>\n\n\n\n<p>Think of BIC as the &#8220;DMV for containers.&#8221; Just like a car gets a unique license plate registered with a government agency, every shipping company must register a unique 3-letter owner code with BIC.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How the BIC Code Registration Works<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A shipping company applies to BIC for a unique <strong>3-letter owner code<\/strong><\/li>\n\n\n\n<li>BIC verifies the code is not already taken<\/li>\n\n\n\n<li>The code is officially registered in the BIC database<\/li>\n\n\n\n<li>The shipping company must then use this code as the first 3 characters on ALL their containers<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Official BIC Registry:<\/strong> You can look up any registered owner code at <a href=\"https:\/\/www.bic-code.org\/\">www.bic-code.org<\/a><\/p>\n\n\n\n<p><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Breaking Down a Container Number \u2014 Part by Part<\/h2>\n\n\n\n<p>Let&#8217;s use a real container number example to explain each part:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Example: <code>MSCU 123456 7<\/code><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Part 1: Owner Code (First 3 Letters) = <code>MSC<\/code><\/h3>\n\n\n\n<p>This is the <strong>3-letter BIC-registered prefix<\/strong> that identifies the owner or operator of the container.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>MSC<\/code> = Mediterranean Shipping Company<\/li>\n\n\n\n<li><code>MAE<\/code> = Maersk Line<\/li>\n\n\n\n<li><code>HLXU<\/code> prefix = Hapag-Lloyd<\/li>\n<\/ul>\n\n\n\n<p>Every shipping company has its own registered prefix. No two companies can have the same 3-letter code.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Part 2: Equipment Category Identifier (4th Letter) = <code>U<\/code><\/h3>\n\n\n\n<p>The 4th letter tells you what <strong>type of equipment<\/strong> the container is.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Letter<\/th><th>Meaning<\/th><\/tr><\/thead><tbody><tr><td><strong>U<\/strong><\/td><td>Freight Container (most common)<\/td><\/tr><tr><td><strong>J<\/strong><\/td><td>Detachable freight container-related equipment<\/td><\/tr><tr><td><strong>Z<\/strong><\/td><td>Trailers and chassis<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Almost every standard container you&#8217;ll encounter uses <strong>U<\/strong>. So in most container number examples you&#8217;ll see online, the 4th character is always &#8220;U.&#8221;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Part 3: Serial Number (6 Digits) = <code>123456<\/code><\/h3>\n\n\n\n<p>This is a unique <strong>6-digit number<\/strong> assigned by the container owner. It helps them track individual containers within their own fleet.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Numbers range from <code>000000<\/code> to <code>999999<\/code><\/li>\n\n\n\n<li>The owner assigns them internally<\/li>\n\n\n\n<li>No two containers from the same company will share a serial number<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Part 4: Check Digit (Last Number) = <code>7<\/code><\/h3>\n\n\n\n<p>The check digit is a <strong>calculated validation number<\/strong> (0\u20139) that confirms the rest of the container number is correct and hasn&#8217;t been misread or mistyped.<\/p>\n\n\n\n<p>It&#8217;s calculated using a specific mathematical formula involving the values of all previous characters. Scanners and software use this to instantly verify if a container number is valid.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Beginner Tip:<\/strong> You don&#8217;t need to calculate the check digit manually. Online tools can do it for you \u2014 but the key point is that if someone writes a wrong container number, the check digit will catch the mistake.<\/p>\n<\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Container Number Examples from Every Major Shipping Line<\/h2>\n\n\n\n<p>Below is a comprehensive table of the world&#8217;s biggest shipping lines, their official BIC-registered owner prefixes, and realistic container number examples for each.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Note:<\/strong> The serial numbers used in examples below are for illustration purposes only and are formatted to show how a real container number looks. Actual container assignments vary by fleet.<\/p>\n\n\n\n<p><\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Top 10 Global Shipping Lines \u2014 Container Number Examples<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Shipping Line<\/th><th>Country<\/th><th>Owner Prefix<\/th><th>Container Number Example<\/th><th>Fleet Size (approx.)<\/th><\/tr><\/thead><tbody><tr><td><strong>MSC<\/strong> (Mediterranean Shipping Company)<\/td><td>Switzerland\/Italy<\/td><td><code>MSCU<\/code><\/td><td><code>MSCU 234781 6<\/code><\/td><td>6,700+ vessels<\/td><\/tr><tr><td><strong>Maersk Line<\/strong><\/td><td>Denmark<\/td><td><code>MAEU<\/code><\/td><td><code>MAEU 891234 5<\/code><\/td><td>700+ vessels<\/td><\/tr><tr><td><strong>CMA CGM<\/strong><\/td><td>France<\/td><td><code>CMAU<\/code><\/td><td><code>CMAU 347821 3<\/code><\/td><td>600+ vessels<\/td><\/tr><tr><td><strong>COSCO Shipping<\/strong><\/td><td>China<\/td><td><code>CSNU<\/code><\/td><td><code>CSNU 123789 0<\/code><\/td><td>500+ vessels<\/td><\/tr><tr><td><strong>Hapag-Lloyd<\/strong><\/td><td>Germany<\/td><td><code>HLXU<\/code><\/td><td><code>HLXU 678912 4<\/code><\/td><td>250+ vessels<\/td><\/tr><tr><td><strong>Evergreen Line<\/strong><\/td><td>Taiwan<\/td><td><code>EISU<\/code><\/td><td><code>EISU 452317 8<\/code><\/td><td>200+ vessels<\/td><\/tr><tr><td><strong>Yang Ming<\/strong><\/td><td>Taiwan<\/td><td><code>YMLU<\/code><\/td><td><code>YMLU 891045 2<\/code><\/td><td>100+ vessels<\/td><\/tr><tr><td><strong>ONE (Ocean Network Express)<\/strong><\/td><td>Japan<\/td><td><code>ONEY<\/code> (containers) \/ <code>ONEU<\/code><\/td><td><code>ONEU 567234 1<\/code><\/td><td>200+ vessels<\/td><\/tr><tr><td><strong>HMM (Hyundai Merchant Marine)<\/strong><\/td><td>South Korea<\/td><td><code>HDMU<\/code><\/td><td><code>HDMU 234567 9<\/code><\/td><td>70+ vessels<\/td><\/tr><tr><td><strong>PIL (Pacific International Lines)<\/strong><\/td><td>Singapore<\/td><td><code>PCIU<\/code><\/td><td><code>PCIU 789123 6<\/code><\/td><td>80+ vessels<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Regional &amp; Specialty Shipping Lines \u2014 Container Number Examples<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Shipping Line<\/th><th>Region<\/th><th>Owner Prefix<\/th><th>Container Number Example<\/th><\/tr><\/thead><tbody><tr><td><strong>Zim Integrated Shipping<\/strong><\/td><td>Israel<\/td><td><code>ZIMU<\/code><\/td><td><code>ZIMU 345678 2<\/code><\/td><\/tr><tr><td><strong>Wan Hai Lines<\/strong><\/td><td>Taiwan<\/td><td><code>WHLU<\/code><\/td><td><code>WHLU 123456 8<\/code><\/td><\/tr><tr><td><strong>OOCL (Orient Overseas Container Line)<\/strong><\/td><td>Hong Kong<\/td><td><code>OOLU<\/code><\/td><td><code>OOLU 891234 7<\/code><\/td><\/tr><tr><td><strong>MOL (Mitsui OSK Lines)<\/strong><\/td><td>Japan<\/td><td><code>MOLU<\/code><\/td><td><code>MOLU 456789 3<\/code><\/td><\/tr><tr><td><strong>NYK Line<\/strong><\/td><td>Japan<\/td><td><code>NYKU<\/code><\/td><td><code>NYKU 234891 5<\/code><\/td><\/tr><tr><td><strong>K Line (Kawasaki Kisen)<\/strong><\/td><td>Japan<\/td><td><code>KKTU<\/code><\/td><td><code>KKTU 678901 4<\/code><\/td><\/tr><tr><td><strong>UASC (United Arab Shipping Company)<\/strong><\/td><td>UAE<\/td><td><code>UACU<\/code><\/td><td><code>UACU 901234 6<\/code><\/td><\/tr><tr><td><strong>Arkas Line<\/strong><\/td><td>Turkey<\/td><td><code>ARKU<\/code><\/td><td><code>ARKU 123789 1<\/code><\/td><\/tr><tr><td><strong>Sinokor Merchant Marine<\/strong><\/td><td>South Korea<\/td><td><code>SKHU<\/code><\/td><td><code>SKHU 456012 9<\/code><\/td><\/tr><tr><td><strong>KMTC (Korea Marine Transport Co.)<\/strong><\/td><td>South Korea<\/td><td><code>KMTU<\/code><\/td><td><code>KMTU 789345 2<\/code><\/td><\/tr><tr><td><strong>Samudera Shipping<\/strong><\/td><td>Indonesia<\/td><td><code>SMDU<\/code><\/td><td><code>SMDU 234678 0<\/code><\/td><\/tr><tr><td><strong>Swire Shipping<\/strong><\/td><td>UK\/HK<\/td><td><code>CHVU<\/code><\/td><td><code>CHVU 890123 7<\/code><\/td><\/tr><tr><td><strong>Gold Star Line<\/strong><\/td><td>Hong Kong<\/td><td><code>GSLU<\/code><\/td><td><code>GSLU 567890 3<\/code><\/td><\/tr><tr><td><strong>TS Lines<\/strong><\/td><td>Taiwan<\/td><td><code>TSLU<\/code><\/td><td><code>TSLU 123456 5<\/code><\/td><\/tr><tr><td><strong>SITC Container Lines<\/strong><\/td><td>China<\/td><td><code>SITV<\/code><\/td><td><code>SITV 678234 8<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Container Leasing Companies \u2014 Container Number Examples<\/h3>\n\n\n\n<p>Many containers are not owned by shipping lines \u2014 they are <strong>leased<\/strong> from container leasing companies. These companies also have BIC-registered prefixes.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Leasing Company<\/th><th>Owner Prefix<\/th><th>Container Number Example<\/th><\/tr><\/thead><tbody><tr><td><strong>Triton International<\/strong><\/td><td><code>TRLU<\/code><\/td><td><code>TRLU 891234 6<\/code><\/td><\/tr><tr><td><strong>Florens Container<\/strong><\/td><td><code>FCIU<\/code><\/td><td><code>FCIU 456789 1<\/code><\/td><\/tr><tr><td><strong>Textainer<\/strong><\/td><td><code>TGHU<\/code><\/td><td><code>TGHU 234567 8<\/code><\/td><\/tr><tr><td><strong>CAI International<\/strong><\/td><td><code>CAXU<\/code><\/td><td><code>CAXU 678912 3<\/code><\/td><\/tr><tr><td><strong>SeaCastle<\/strong><\/td><td><code>SCZU<\/code><\/td><td><code>SCZU 901234 5<\/code><\/td><\/tr><tr><td><strong>Gold Container<\/strong><\/td><td><code>GCXU<\/code><\/td><td><code>GCXU 345678 7<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><\/p>\n\n\n\n<p><strong>Beginner Tip:<\/strong> Just because a container has &#8220;MSCU&#8221; on the side doesn&#8217;t mean MSC owns it. They may have leased it from a company like Triton. The prefix tells you the <strong>registered owner<\/strong>, which is sometimes different from the operating carrier.<\/p>\n\n\n\n<p><\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/large-vessel-loaded-thousands-of-shipping-containers-on-it-edited.png\" alt=\"\" class=\"wp-image-60\" srcset=\"https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/large-vessel-loaded-thousands-of-shipping-containers-on-it-edited.png 1024w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/large-vessel-loaded-thousands-of-shipping-containers-on-it-edited-300x225.png 300w, https:\/\/tracecontainer.com\/blog\/wp-content\/uploads\/2026\/03\/large-vessel-loaded-thousands-of-shipping-containers-on-it-edited-768x576.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Container Numbers Are Assigned \u2014 Step by Step<\/h2>\n\n\n\n<p>Here&#8217;s how the whole system works from start to finish:<\/p>\n\n\n\n<p><strong>Step 1 \u2014 Company registers with BIC<\/strong> A shipping company pays a registration fee and applies for a unique 3-letter owner code from BIC.<\/p>\n\n\n\n<p><strong>Step 2 \u2014 BIC approves the code<\/strong> BIC checks their global registry to make sure the code isn&#8217;t taken, then approves and registers it.<\/p>\n\n\n\n<p><strong>Step 3 \u2014 Company builds or leases containers<\/strong> When new containers are manufactured or leased, the company assigns a 6-digit serial number to each one.<\/p>\n\n\n\n<p><strong>Step 4 \u2014 Check digit is calculated<\/strong> Using the ISO 6346 standard formula, a check digit (0\u20139) is calculated based on the letters and numbers in the container ID.<\/p>\n\n\n\n<p><strong>Step 5 \u2014 Code is stamped on the container<\/strong> The full container number is physically stenciled or painted on the container \u2014 typically on the door, left side, and right side panels.<\/p>\n\n\n\n<p><strong>Step 6 \u2014 Container enters global tracking systems<\/strong> Shipping lines, ports, and freight forwarders enter the container number into digital systems where it can be tracked worldwide.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ISO 6346 \u2014 The International Standard<\/h2>\n\n\n\n<p>All container numbering follows <strong>ISO 6346<\/strong>, a standard published by the International Organization for Standardization (ISO).<\/p>\n\n\n\n<p>ISO 6346 defines:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The format of the container identification code<\/li>\n\n\n\n<li>The system for assigning owner codes<\/li>\n\n\n\n<li>The method for calculating check digits<\/li>\n\n\n\n<li>How the code should be displayed on the container<\/li>\n<\/ul>\n\n\n\n<p>This means that no matter which country you&#8217;re in or which shipping line you&#8217;re dealing with, every container number follows the same universal format. A container number example from a Chinese carrier follows the exact same structure as one from a Danish or Swiss carrier.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 You Don&#8217;t Need to Memorize Every Prefix \u2014 Just Use <a href=\"http:\/\/tracecontainer.com\" data-type=\"link\" data-id=\"tracecontainer.com\" target=\"_blank\" rel=\"noreferrer noopener\"><span style=\"text-decoration: underline;\">TraceContainer<\/span><\/a><\/h2>\n\n\n\n<p>Here&#8217;s the honest truth: <strong>there are thousands of registered BIC owner codes.<\/strong> Nobody in the shipping industry memorizes them all \u2014 not freight forwarders, not port agents, not customs officers.<\/p>\n\n\n\n<p>What everyone actually does is use a container tracking tool.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/www.tracecontainer.com\/\">TraceContainer.com<\/a><\/strong> is one of the most beginner-friendly ways to track any container from any shipping line. Instead of having to know which carrier a container belongs to, which system to log into, or what prefix stands for which company \u2014 you just:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Type the container number (e.g., <code>MSCU 234781 6<\/code>)<\/li>\n\n\n\n<li>Hit search<\/li>\n\n\n\n<li>See the live tracking status, vessel name, port of origin, destination, and ETA<\/li>\n<\/ol>\n\n\n\n<p>TraceContainer automatically recognizes the owner prefix, identifies the shipping line, and pulls the tracking data \u2014 <strong>so you don&#8217;t need to keep a cheat sheet of every shipping line&#8217;s prefix.<\/strong><\/p>\n\n\n\n<p>Whether it&#8217;s Maersk, MSC, CMA CGM, Evergreen, or any of the hundreds of smaller regional carriers, TraceContainer handles the lookup for you.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Beginner Tip:<\/strong> Bookmark <a href=\"https:\/\/www.tracecontainer.com\/\">TraceContainer.com<\/a> as your go-to container tracking tool. It saves you the frustration of going to 10 different carrier websites trying to figure out who owns a container.<\/p>\n\n\n\n<p><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Quick Recap \u2014 Container Number Cheat Sheet for Beginners<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Concept<\/th><th>Quick Explanation<\/th><\/tr><\/thead><tbody><tr><td><strong>Container Number<\/strong><\/td><td>Unique 11-character ID on every container<\/td><\/tr><tr><td><strong>Format<\/strong><\/td><td>4 letters + 6 digits + 1 check digit<\/td><\/tr><tr><td><strong>Owner Code (first 3 letters)<\/strong><\/td><td>Identifies the registered container owner<\/td><\/tr><tr><td><strong>4th Letter<\/strong><\/td><td>Almost always &#8220;U&#8221; (freight container)<\/td><\/tr><tr><td><strong>6-digit serial<\/strong><\/td><td>Assigned by the owner to track their fleet<\/td><\/tr><tr><td><strong>Check digit<\/strong><\/td><td>Math-calculated digit to validate the number<\/td><\/tr><tr><td><strong>Who registers prefixes?<\/strong><\/td><td>BIC (Bureau International des Containers)<\/td><\/tr><tr><td><strong>International Standard<\/strong><\/td><td>ISO 6346<\/td><\/tr><tr><td><strong>Best way to track any container<\/strong><\/td><td><a href=\"https:\/\/www.tracecontainer.com\/\">TraceContainer.com<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<p><strong>Q: Can two containers have the same number?<\/strong> No. Each container number is globally unique. The combination of owner prefix + serial number + check digit ensures no two containers in the world have the same ID.<\/p>\n\n\n\n<p><strong>Q: What if the 4th letter is not &#8220;U&#8221;?<\/strong> If you see a &#8220;Z&#8221; or &#8220;J&#8221; as the 4th character, it refers to trailer chassis or other container-related equipment \u2014 not a standard freight container.<\/p>\n\n\n\n<p><strong>Q: Do container numbers ever change?<\/strong> The number is physically on the container, so it stays the same throughout the container&#8217;s life. However, if a container is sold to a new owner, it may be re-marked with a new owner prefix.<\/p>\n\n\n\n<p><strong>Q: Why are some container numbers shown without a space?<\/strong> Both formats are the same thing. <code>MSCU1234567<\/code> and <code>MSCU 123456 7<\/code> refer to the same container. The spaces are just added for readability.<\/p>\n\n\n\n<p><strong>Q: Is BIC registration mandatory?<\/strong> Yes, for any company wanting their containers to be recognized globally under ISO 6346, BIC registration is required. It&#8217;s the only internationally recognized registry for container owner codes.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><em>Last updated for accuracy. All container number examples in this article are illustrative samples following the ISO 6346 standard format. For live container tracking, visit <a href=\"https:\/\/www.tracecontainer.com\/\">TraceContainer.com<\/a>.<\/em><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you&#8217;re new to the shipping industry, one of the first things you&#8217;ll notice is that every container has a unique code stamped on its side, something like\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-57","post","type-post","status-publish","format-standard","hentry","category-container-tracking"],"_links":{"self":[{"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/posts\/57","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/comments?post=57"}],"version-history":[{"count":1,"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/posts\/57\/revisions"}],"predecessor-version":[{"id":62,"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/posts\/57\/revisions\/62"}],"wp:attachment":[{"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/media?parent=57"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/categories?post=57"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tracecontainer.com\/blog\/wp-json\/wp\/v2\/tags?post=57"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}