Anomaly
https://web.facebook.com/robots.txt
HTTP blocking (HTTP requests failed)
Websites
Runtime: 20.1s
On November 04, 2025, 10:59 AM UTC, https://web.facebook.com/robots.txt presented signs of HTTP blocking (HTTP requests failed) on AS34511 in Spain.
This might mean that https://web.facebook.com/robots.txt 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:
127.0.0.2
Query:
IN A web.facebook.com
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
A
31.13.83.8
TCP Connections
Connection to 31.13.83.8:443 succeeded.
HTTP Requests
No Data
Resolver
Resolver ASN
AS0
Resolver IP
127.0.0.2
Resolver Network Name
Report ID
20251104T104541Z_webconnectivity_ES_34511_n4_oVk0TeKqecPbmTtm
Platform
windows
Software Name
ooniprobe-desktop-unattended (3.10.0-beta.3)
Measurement Engine
ooniprobe-engine (3.10.0-beta.3)