Comment on Ask HN: What gives Cloudflare the right to takedown apps revealing site real IP?parentComments−CodesInChaos4yIf the origin server only responds with the relevant content if the correct host is requested, this scan becomes much more expensive, since you need to scan all IPs for each domain you're interested in, instead of once total.
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If the origin server only responds with the relevant content if the correct host is requested, this scan becomes much more expensive, since you need to scan all IPs for each domain you're interested in, instead of once total.