'''Note:''' To use subdomains with '''Cloudfare''' services, you must use the @ symbol.
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service_name cloudflare.com-v4
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domain [Your domain, here: example.com]
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username Bearer
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password [Your API token]
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To use subdomains (CNAME or A records), use the format below when filling your credentials:
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domain {subdomain}@[zone]
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Examples:
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If the hostname is “sample.example.com”, the “domain” field would be “[email protected]”
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If the hostname is “dev1.sample.example.com”, the “domain” field would be “[email protected]”
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If using Cloudflare's “Subdomain Support”, your zone may already be “foo.example.com”, so if the DDNS hostname is “bar.foo.example.com” the domain field would be “[email protected]”