An Amazon ASIN (or Amazon Standard Identification Number) is a unique identifier for products sold on Amazon. It is an alphanumeric code assigned by Amazon to every product sold on its marketplace. The ASIN is used internally by Amazon to track and manage products, and it is also included in the product’s URL. If you’re an Amazon seller, it’s important to understand how ASINs work and how to find them for your products.
An ASIN is assigned by Amazon to products listed on its website and is used to help track items in the Amazon catalog as well as identify products when customers search for them on the Amazon website. ASINs are 10-character alphanumeric codes that are unique to each product in the Amazon catalog.
How to Identify a Product’s ASIN
You can find an ASIN by looking at the product’s URL. The last part of the URL is the ASIN. For example, https://www.amazon.com/Winky-Lux-Glimmer-Balm-Unicorn/dp/B075X4S4GW?ref_=ast_sto_dp is the URL for a “Winky Lux Glitter Balm Unicorn” lipstick. The ASIN for this product is listed in the URL as B075X4S4GW. The ASIN can also be located by scrolling down to the Product Detail section, as shown below…

Why Use ASINs?
By using ASINs, Amazon is able to keep track of products and also help customers find the products they are looking for. When a customer searches for a product on the Amazon website, the ASIN is used to identify the product and bring up its listing. This helps ensure that customers are able to find the products they are looking for on the Amazon website. ASINs are also used by Amazon to track products in its catalog. This helps Amazon keep accurate inventory levels and also helps ensure that items are properly categorized. Potential customers can also use the ASIN to search for the product on Amazon. Using ASINs helps Amazon provide a better customer experience by making it easier for customers to find the products they are looking for.
ASINs were originally developed to help keep accurate inventory levels and also help ensure that items were properly categorized. Using ASINs helped Amazon provide a better customer experience by making it easier for customers to find the products they were looking for. ASINs have also become an important part of Amazon’s internal search engine optimization (SEO) process. Additionally, ASINs are used by Amazon’s advertising system, allowing sellers to target their ads to specific products and product categories.
While ASINs are typically 10 characters long, they can be up to 14 characters in some cases. The first two characters of an ASIN are always letters, while the remaining characters can be either letters or numbers. In most cases, an ASIN will be the same as a product’s ISBN (International Standard Book Number), UPC (Universal Product Code), or EAN (European Article Number). However, there are some exceptions to this rule.