OpenTelemetry SDK
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    Variable ATTR_URL_DOMAINConst Experimental

    ATTR_URL_DOMAIN: "url.domain" = ...

    Domain extracted from the url.full, such as "opentelemetry.io".

    www.foo.bar
    
    opentelemetry.io
    
    3.12.167.2
    
    [1080:0:0:0:8:800:200C:417A]
    

    In some cases a URL may refer to an IP and/or port directly, without a domain name. In this case, the IP address would go to the domain field. If the URL contains a literal IPv6 address enclosed by [ and ], the [ and ] characters should also be captured in the domain field.

    This attribute is experimental and is subject to breaking changes in minor releases of @opentelemetry/semantic-conventions.