Microsoft (M$) is at it again... instead of admitting that closed source has malware in it, in which you agree not to reverse engineer otherwise you would see it... they've decided to attack everyone else.

No-IP’s Formal Statement on Microsoft Takedown

This applies to any script that is using usoCheckup... use, preferably on the SSL channel, or just remove it from your metadata block altogether... granted this isn't USO but there are some scripts still lurking around that are using the and that's my service for the redirect.