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TYPE HOST URL (in browser) DOMAIN (served)
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A Record @ example.com -> 104.197.12.54
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CNAME Record www www.example.com -> example.com
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CNAME Record blog blog.example.com -> example.herokudns.com
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URL IN BROWSER ACTUAL CONTENT SERVED
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www.example.com -> example.com -> 104.197.12.54
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