upresults.nic.in is the NIC-hosted results portal used to publish UP Board Class 10 and Class 12 results. On result day, the roll-number based result window goes live on this portal.
This page explains how to use the portal on result day, what details you need, and alternative ways to check your result if the site is busy due to heavy traffic.
Why is upresults.nic.in slow on result day?
Very high traffic on result day can slow the site. Try again after a while or use DigiLocker/SMS as alternatives. What do I need to check my result here? Your board roll number (and school code where asked), available on your admit card.