ASN stands for Autonomous System Number. It is a unique identifier assigned to an autonomous system (AS) in the Internet that participates in the Border Gateway Protocol (BGP). An autonomous system is a collection of connected Internet Protocol (IP) routing prefixes under the control of one or more network operators that has a single, clearly defined routing policy.

In practical terms, an ASN is used by routers in the Internet to exchange information about IP routing paths. Each AS has a unique ASN, which is used to identify it to other ASes and to BGP routers in the Internet. This enables routers to determine the best path for traffic to take as it travels between different ASes and across the Internet.

ASNs are assigned by the Internet Assigned Numbers Authority (IANA) to regional Internet registries, which in turn allocate them to individual organizations or Internet Service Providers (ISPs) that operate autonomous systems.
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Here is an additional guide on how to add your ASN to your resources:

1. Access the Dashboard.
Start by logging in to your account and accessing the dashboard.

2. Navigate to My Resources.
Look for the "My Resources" section within your dashboard.

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3. Select ASN.
Within the My Resources section, you should find an option labeled "ASN". Click on this option.

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4. Add ASN.
In the upper right corner of the ASN section, you should see a button "Add ASN". Click on this button to initiate the process of adding your ASN.

​To obtain your ASN, you will need to contact your service data center or internet service provider (ISP). They will provide you with the necessary ASN details.

​Alternatively, if you don't have your own ASN, InterLIR offers the option of using public ASNs.

By following these steps, you can add your ASN to your account, which is essential for routing and managing your internet traffic effectively.