Finding Your NetSuite Account ID
You do not need to know your NetSuite account ID to use NetSuite. In special cases, however, you may want to know what your account ID is.
You can find your NetSuite account ID at the beginning of the NetSuite URL. For example, if the URL is https://1234567.app.netsuite.com/, your account ID is 1234567.
Account IDs for Sandbox and Release Preview accounts contain an underscore, for example 123456_RP. The underscore is transformed into a hyphen in the generated account-specific domain URL and the capital letters of the acronym are transformed into lowercase letters. For example, the URL for a Sandbox account may look as follows: https://1234567-sb.app.netsuite.com. For more information, see URLs for Account-Specific Domains.