Hi there, I am looking to purchase the Business plan but I was just wondering whether the WAF product can be used on a multi-level subdomain, e.g my.long.subdomain.domain.com? And if so can have I as many sub-domains as I wish?
Generally yes, the WAF does cover the entire zone as long as it’s proxied (orange cloud for the DNS records 
).
The only thing you need to worry about is SSL for these subdomains. On the business plan you can only upload a single custom certificate.
So if you want something.else.example.com and my.long.subdomain.example.com SSL protected your certificate will need to include both hostnames (or both wildcarded to the second subdomain like *.else.example.com and *.long.subdomain.example.com) and you’ll need this for each hostname you want.
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Thanks @Judge. In relation to the SSL, I’m guessing I can also use the Cloudflare Dedicated Certificate with Custom Hostname? https://support.cloudflare.com/hc/en-us/articles/228009108-Dedicated-SSL-Certificates
Yes, using that will also work 
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