From different online and offline sources, we have been informed that all Airtel connections ranging from fiber internet, broadband, to even mobile network is down in regions like Delhi, Mumbai, Noida and many other locations. Outage tracker https://downdetector.in/status/airtel/ shows Airtel internet having problems since about 11:30 AM on Friday, February 11.
You can reach out to us at support@e2enetworks.com and report if you face such connectivity issues.