June 10, 2021 at 3:57:10 PM UTC
VERIFY
Anomaly
DNS tampering
Websites
Runtime: 711ms
On June 10, 2021 at 3:57:10 PM UTC, http://ocsp.int-x3.letsencrypt.org/ presented signs of DNS tampering on AS31721 in Azerbaijan.
This might mean that http://ocsp.int-x3.letsencrypt.org/ was blocked, but false positives can occur.
Please explore the network measurement data below.
Failures
HTTP Experiment
null
DNS Experiment
null
Control
null
DNS Queries
Resolver:
5.191.33.2
Query:
IN A ocsp.int-x3.letsencrypt.org
Engine:
system
Name
Class
TTL
Type
DATA
Answer IP Info
@
IN
A
62.212.253.10
AS29049 (Delta Telecom Ltd)
@
IN
A
62.212.253.8
AS29049 (Delta Telecom Ltd)
TCP Connections
62.212.253.8:80: succeeded
62.212.253.10:80: succeeded
HTTP Requests
URL
GET http://ocsp.int-x3.letsencrypt.org/
Response Headers
Cache-Control:max-age=42724Connection:keep-aliveContent-Length:0Date:Thu, 10 Jun 2021 15:57:11 GMTExpires:Fri, 11 Jun 2021 03:49:15 GMTServer:nginx
Response Body
Empty body
Resolver
Resolver ASN
AS31721
Resolver IP
5.191.33.2
Resolver Network Name
"Azercell Telecom Ltd" Azerbaijan-Turkey Joint Venture
Measurement UID
20210610155711.901699_AZ_webconnectivity_77dcc25773a7a43a
Report ID
20210610T155300Z_webconnectivity_AZ_31721_n1_lLdEDaCNwWdZoWi9
Platform
windows
Software Name
ooniprobe-desktop-unattended (3.9.2)
Measurement Engine
ooniprobe-engine (3.9.2)