vitalsource.com .com crawl First seen 2026-04-11 · Last seen 2026-05-16 · error HTTP 403 5 attempts US · 104.19.189.84 · AS13335 Cloudflare, Inc. Reputation http 403 Certificates Loading certificate Linked from (8) verbacompare.com×5 drbethsnow.com×2 redshelf.com×2 textbookx.com×2 mathjax.org×2 intrepidlearning.com×2 sagamorepub.com×1 escindiana.org×1