Why Rotating Residential Proxies Still Get 403s: Sticky Session TTL, JA3 Fingerprints, and ASN Economics (2026)
Three layers, one invoice. We separate ASN reputation, session-to-IP binding and the TLS fingerprint that travels
with your request, then work a three-tier example where forced per-request rotation burns 548 GB and $2,190 a month
for exactly the same completed flows that a sticky session finishes with 387 GB and $1,548.
Includes five copy-paste curl / curl_cffi diagnostics and the documented sticky window of
every vendor in the benchmark.