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Asked: 2026-05-17T17:16:16+00:00

I have multi-tenant ASP.NET MVC application which utilizes subdomains to determine the current tenant.

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I have multi-tenant ASP.NET MVC application which utilizes subdomains to determine the current tenant. Whether or not the domain is valid is determined via database table lookup.

Where would be the best place to have a function that checks if the domain is in the database?If the subdomain is not in the database, it should redirect to the Index action in the Error controller.

Placing the check in the Application_BeginRequest method in the Global.asax file doesn’t work because a never ending redirect results.

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  1. Editorial Team

    Where would be the best place to have a function that checks if the domain is in the database?If the subdomain is not in the database, it should redirect to the Index action in the Error controller.

    Placing the check in the Application_BeginRequest method in the Global.asax file doesn’t work because a never ending redirect results.

    That’s the right place, you just need to check the request Url is not already /Error.

    You might already be doing so, but I’d like to add that it seems pretty static information that you should cache instead of hitting the database for each request.

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