Can I use a third-party service like Cloudflare with my Blogspot custom domain, and how would that work with nameservers?

Yes, you can use third-party services like Cloudflare with your Blogspot custom domain. In this scenario, you would change your domain's nameservers at your domain registrar to point to Cloudflare's nameservers. Then, within your Cloudflare DNS management panel, you would configure the required CNAME and A records (pointing to `ghs.google.com` and Google's IP addresses) for your Blogspot blog. Cloudflare would then act as an intermediary, routing traffic through its network, providing benefits like CDN caching, DDoS protection, and SSL, before it reaches Google's Blogspot servers.