3 ms·
Hi there, I work in advertising, and I absolutely use the EDNS0 data to track users. I'm okay with a 1:250ish potential error rate since outside of facebook and
by geocar 10y ago
Hi there, I work in advertising, and I absolutely use the EDNS0 data to track users. I'm okay with a 1:250ish potential error rate since outside of facebook and google, you probably don't go to the same websites as your neighbour.
Thanks for your hard work.
- chillydawg 10y agoHow does that work?
- geocar 10y agoI log the requests to my DNS servers. My client embeds information I need into the host part and the custom DNS server always returns NXDOMAIN.
- pfg 10y agoI'm curious: what's the reason for doing this rather than just logging the IP addresses that hit your server directly? Is this a way to get around VPNs that leak the real IP via DNS? Or does this allow you to get something back from users with ad blockers that block the request, but no the DNS lookup (I don't know if this is the case)? Is it just a performance optimization (just a DNS lookup vs. a HTTP request)?
- geocar 10y agoI don't have a server for them to hit directly: My DNS server always returns NXDOMAIN.