September 19, 2021 at 11:31:07 AM UTC
VERIFY
Anomaly
Websites
Websites
Runtime: 1m
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On September 19, 2021 at 11:31:07 AM UTC, https://twitter.com/aiww/ presented signs of DNS tampering on AS4134 in China. This might mean that https://twitter.com/aiww/ was blocked, but false positives can occur. Please explore the network measurement data below.

Failures

HTTP Experiment
generic_timeout_error
DNS Experiment
null
Control
null

DNS Queries

Resolver:
203.75.51.2
Query:
IN A twitter.com
Engine:
system
Name
Class
TTL
Type
DATA
Answer IP Info
@
IN
A
38.121.72.166
AS174 (Cogent Communications)
Query:
IN AAAA twitter.com
Engine:
system
Name
Class
TTL
Type
DATA
Answer IP Info
@
IN
AAAA
2001::68f4:2e3f
AS6939 (Hurricane Electric LLC)

TCP Connections

2001::68f4:2e3f:443: failed (generic_timeout_error)
38.121.72.166:443: failed (generic_timeout_error)

HTTP Requests

No data

Resolver

Resolver ASN
AS3462
Resolver IP
203.75.51.2
Resolver Network Name
Chunghwa Telecom Co., Ltd.
Measurement UID
20210919113208.899957_CN_webconnectivity_4f232333a68d9880
Report ID
20210919T100606Z_webconnectivity_CN_4134_n1_JXjff7dBG6IkodwJ
Platform
linux
Software Name
ooniprobe-cli (3.11.0-alpha)
Measurement Engine
ooniprobe-engine (3.11.0-alpha)

Raw Measurement Data

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