No, none of my sites are DDOS protected.
Yes, protection is included free by my ISP.
Yes, provided as an extra-price option by my ISP.
Yes, I use the free verion of CloudFlare.
Yes, I use the Pro version of CloudFlare (currently $20 per month).
Yes, I use the Business version of CloudFlare (currently $200 per month).
Yes, I use some other DDOS service (tell us about it in a post).