Anomaly
https://du.sf-converter.com
HTTP blocking (HTTP requests failed)
Websites
Runtime: 726ms
On April 26, 2025, 08:53 PM UTC, https://du.sf-converter.com presented signs of HTTP blocking (HTTP requests failed) on AS56040 in China.
This might mean that https://du.sf-converter.com was blocked, but false positives can occur.
Please explore the network measurement data below.
Failures
HTTP Experiment
connection_reset
DNS Experiment
null
Control
null
DNS Queries
Resolver:
66.185.114.250
Query:
IN ANY du.sf-converter.com
Engine:
getaddrinfo
Name
Class
TTL
Type
DATA
@
IN
A
141.95.65.20
@
IN
A
51.159.103.159
@
IN
A
51.159.103.167
@
IN
A
51.195.234.163
@
IN
A
51.159.103.157
@
IN
A
51.195.234.165
@
IN
A
57.129.39.137
@
IN
A
51.195.234.166
@
IN
A
57.128.187.114
@
IN
A
51.159.98.166
@
IN
A
57.129.39.136
@
IN
A
141.95.84.55
@
IN
A
141.95.99.59
@
IN
CNAME
du.sf-converter.com.
Query:
IN A du.sf-converter.com
Engine:
udp
Name
Class
TTL
Type
DATA
@
IN
A
57.129.39.137
@
IN
A
57.129.39.136
@
IN
A
141.95.65.20
@
IN
A
141.95.99.59
@
IN
A
57.128.187.114
@
IN
A
141.95.84.55
@
IN
A
51.159.103.167
@
IN
A
51.195.234.165
@
IN
A
51.195.234.163
@
IN
A
51.159.98.166
@
IN
A
51.159.103.159
@
IN
A
51.195.234.166
@
IN
A
51.159.103.157
Query:
IN AAAA du.sf-converter.com
Engine:
udp
dns_no_answer
TCP Connections
Connection to 51.195.234.166:443 succeeded.
Connection to 51.195.234.163:443 succeeded.
Connection to 51.195.234.165:443 succeeded.
Connection to 57.129.39.136:443 succeeded.
Connection to 141.95.99.59:443 succeeded.
Connection to 57.129.39.137:443 succeeded.
Connection to 141.95.65.20:443 succeeded.
Connection to 141.95.84.55:443 succeeded.
Connection to 51.159.103.159:443 succeeded.
Connection to 51.159.98.166:443 succeeded.
Connection to 51.159.103.167:443 succeeded.
Connection to 51.159.103.157:443 succeeded.
Connection to 57.128.187.114:443 succeeded.
HTTP Requests
Resolver
Resolver ASN
AS42
Resolver IP
66.185.114.250
Resolver Network Name
WoodyNet, Inc.
Report ID
20250426T192800Z_webconnectivity_CN_56040_n1_FhZbd0zlzRoGiwLW
Platform
React OS
Software Name
ooniprobe-react-os (3.25.0-alpha)
Measurement Engine
ooniprobe-engine (3.25.0-alpha)