How often does Google's Safe Browsing system expire URLs that are 404?

Hello, Numerous customers that have had phishing issues reported to them as a result of Google’s Safe Browsing program have taken care of said issues. The URL(s) reported to them either return a 404 or 5xx error but the URL stays listed, according to the GSB’s API, for weeks afterwards. Does anyone know: 1) Is there some kind of expiry time on URLs flagged as unsafe by GSB 2) Is there some way for *us* (the provider) to trigger a review of the URL to speed this process up? Harassing the client to login to the webmaster portal and request a review can be a cat herding exercise. Thanks for any info you might have. — Landon Stewart Lead Analyst - Abuse and Security Management INAP® 📧 lstewart@inap.com 🌍 www.inap.com