On July 31, 2020, 01:23 AM UTC, https://www.concern.net/ presented signs of HTTP blocking (HTTP requests failed) on AS16552 in United States. This might mean that https://www.concern.net/ was blocked, but [false positives](https://ooni.org/support/faq/#why-do-false-positives-occur) can occur. Please explore the network measurement data below.
OONI Probe version
Measurement Kit version