Network tampering
Malformed ctrl_headers
Middleboxes
Runtime: 117ms
On August 12, 2025, 12:00 AM UTC, network traffic was manipulated when contacting our control servers.
This means that there might be a middlebox on 212238 in Czechia, which could be responsible for censorship and/or surveillance.
Resolver
Resolver ASN
AS15169
Resolver IP
172.217.37.149
Resolver Network Name
Google LLC
Report ID
20250812T000006Z_httpheaderfieldmanipulation_CZ_212238_n1_BEirEMBLkgoEompP
Platform
windows
Software Name
ooniprobe-desktop-unattended (3.24.0)
Measurement Engine
ooniprobe-engine (3.24.0)