Vulnerability Detection Service

The reverse DNS entries and IP addresses that Web Check uses to monitor your assets are:

  • check.check-int.webcheck.service.ncsc.gov.uk 18.202.84.9
  • check1.check-int.webcheck.service.ncsc.gov.uk 54.72.228.131

Further information on Web Check can be found here. If you have any additional queries please contact feedback@digital.ncsc.gov.uk.