If you've come across tmprod87304158int.b2clogin.com and wondered whether it's safe, here's the short answer: it's a subdomain of Microsoft's Azure Active Directory B2C service, used by businesses to handle customer logins. That 'Invalid Request Without Path' message is normal — it means you hit the server without the right application-specific URL.
For a login endpoint, the things that matter most are security and infrastructure. This site has a valid SSL certificate from DigiCert, uses modern encryption, and is hosted on Microsoft's own network. No blacklists or threat warnings are attached to it. The lack of a privacy policy on this specific URL isn't a red flag; your data handling is governed by the main application that uses this login service.
So is tmprod87304158int.b2clogin.com a scam? The evidence says no. It's infrastructure, not a storefront or a random site asking for personal info out of nowhere. If you were redirected here while trying to log into a service you already trust, that's expected behavior. Just make sure you're on the legitimate parent site before entering credentials.