Why LinkedIn flags datacenter IPs
LinkedIn checks the AS (Autonomous System) number of every login. AS numbers belonging to AWS, Google Cloud, DigitalOcean and similar are publicly known. A login from those is statistically near zero for normal users.
When datacenter is OK
Web scraping public pages, API testing, geo-spoofing for content access. Anywhere the target site doesn't fingerprint by IP.
When datacenter is fatal
LinkedIn, Instagram, Facebook, X, and any platform with a serious anti-abuse team. Use residential.
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