Search
MAT Charts
Circumvention Charts
Countries
OK
https://fbcdn.net/robots.txt
Taiwan
Country
131584
Network
September 28, 2025, 11:57 AM UTC
Date & Time
Websites
Websites
Web Connectivity Test 
Runtime: 1.1s
Share on Facebook or Twitter
On September 28, 2025, 11:57 AM UTC, https://fbcdn.net/robots.txt was accessible when tested on 131584 in Taiwan.

Failures

HTTP Experiment
null
DNS Experiment
null
Control
null

DNS Queries

Resolver:
74.125.41.18
Query:
IN A fbcdn.net
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
A
31.13.87.36
Query:
IN AAAA fbcdn.net
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
AAAA
2a03:2880:f117:83:face:b00c:0:25de

TCP Connections

Connection to 2a03:2880:f117:83:face:b00c:0:25de:443 was blocked.
Connection to 31.13.87.36:443 succeeded.

HTTP Requests

URL
GET https://fbcdn.net/robots.txt
Response Headers
Alt-Svc:
h3=":443"; ma=86400
Cache-Control:
private, no-cache, no-store, must-revalidate
Content-Security-Policy:
default-src blob: 'self';script-src *.facebook.com *.fbcdn.net *.facebook.net 127.0.0.1:* blob: 'self' 'nonce-IBw3mkXn' https://*.google-analytics.com *.google.com;style-src 'unsafe-inline';connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net wss://*.facebook.com:* wss://*.whatsapp.com:* wss://*.fbcdn.net attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' https://*.google-analytics.com;font-src data: blob: 'self';img-src data: blob: 'self' https://*.google-analytics.com;media-src data: blob: 'self';child-src data: blob: 'self';frame-src data: blob: 'self';manifest-src data: blob: 'self';object-src data: blob: 'self';worker-src data: blob: 'self';block-all-mixed-content;upgrade-insecure-requests;require-trusted-types-for 'script';
Content-Type:
text/html; charset="utf-8"
Cross-Origin-Embedder-Policy-Report-Only:
require-corp;report-to="coep_report"
Cross-Origin-Opener-Policy:
same-origin-allow-popups
Cross-Origin-Opener-Policy-Report-Only:
restrict-properties;report-to="coop_report"
Date:
Sun, 28 Sep 2025 11:57:45 GMT
Document-Policy:
include-js-call-stacks-in-crash-reports
Expires:
Sat, 01 Jan 2000 00:00:00 GMT
Origin-Agent-Cluster:
?1
Pragma:
no-cache
Proxy-Status:
http_request_error; e_fb_vipaddr="AcPU9_D0ZzIgKdcILX1PhuH5jv6-RRG1cuIBbDku9pE1C5sy4Lim5YgPn-btXJpytOe6EUlklaXdf3SYClSR6rfzQBSuvoN_3lA"; e_clientaddr="AcMvYeaRLTOpvEutyyQ1gj4mn1W7cz7AVopFBS-yHkwvga-AncZbQLcCveSshLvFRVtDjwYOvlQlsz920WJbN9eObJ5r3CoNMzSmKBONPuzQc9otxA"; e_upip="AcO0qRdMKeWMBxLmtZF07UI2b8j65tqBJrnSP-rDUa0xP2MNCv5f2-j__vvgciuJ2acE4LsomdEzbmn2Bjd_OMEyUaUrq7yyfpYLBbU"; e_fb_zone="AcPbMNXb9OAim6lGhb3NvZbYVnHJoTxq82j-F4i3BZRlCE6rWGF1WWHrb3GZc11Z"; e_fb_twtaskhandle="AcPhi3BdTJfxITT4rSsAXMYWgfUB71yBn_yQBuMJHlUU_Xar5R1gZjuvQQbLQgLbVTl4fJhZ83Yim3SJ2SR6DRz5jHdcdXIBtSRWUBx98NDyzzU"; e_proxy="AcNmSvzJLkA6CHDMvwMI_lPCHPzftDA6ZyglxhdV0-2crEWH3agpVs_DgQQ5kLnFGF9t5OBDKOM9ewHtGl7l", http_request_error; e_fb_vipaddr="AcMC_fs0XtpjaMNlNSHiZJb7WUZOsEXxMFp_S8WsJQ_AcfZ7ufg7joACdvd9jAMxepSDaiM"; e_clientaddr="AcPy8DeVYJ2glkTdyF-8WT3l6tuWGu-lEiAOtKCHBtvkNqvqlLGiyXFryFXaPbgIXq1U0iVz2RkCgYa4NAJK"; e_upip="AcP37JDtACmTnDv1jngJ45SgqdFaFT3VuXfDJVrf6cgMkTI2Mn295z3QdfVKCl-HSvTW4oqA3h2j_fBpk10pu728fa4p6al8N0Y"; e_fb_zone="AcP3OoelAj3lbrX6bTqXxhOH3tw8WSnCpVF1ObD0snXvTHVBdGSNL956sey_Bg"; e_fb_twtaskhandle="AcOlo7s4nkt6QPJk_pAT63C6U--zloizMq4vXduQRHhsTZPGut-Jkyp2k3lY6O_Hl-PmXDc50SWzJg8zBhXPHYdPw2gENgetCrz7"; e_proxy="AcMRqI_Hdeh7X_9a8x24sEg6d1idABSVBmNkUELygtBcFKj2LVruv7osKyps5CB714Byw9b1ET-Zn5U"
Report-To:
{"max_age":2592000,"endpoints":[{"url":"https:\/\/www.facebook.com\/browser_reporting\/coop\/?minimize=0"}],"group":"coop_report","include_subdomains":true}, {"max_age":86400,"endpoints":[{"url":"https:\/\/www.facebook.com\/browser_reporting\/coep\/?minimize=0"}],"group":"coep_report"}
Reporting-Endpoints:
coop_report="https://www.facebook.com/browser_reporting/coop/?minimize=0", coep_report="https://www.facebook.com/browser_reporting/coep/?minimize=0"
Strict-Transport-Security:
max-age=31536000; preload; includeSubDomains
Vary:
Accept-Encoding
X-Content-Type-Options:
nosniff
X-Fb-Connection-Quality:
EXCELLENT; q=0.9, rtt=20, rtx=0, c=10, mss=1380, tbw=3655, tp=-1, tpl=-1, uplat=139, ullat=0
X-Fb-Debug:
pFCHvHovJ/AOZhKq/68nP8oNwqylkwFfuw8rYanAVk58XGY4rGOyvVK65DUs/ophD/1SLsN4ns0ZZwylPonrLw==
X-Frame-Options:
DENY
X-Xss-Protection:
0
Response Body
<!DOCTYPE html><html lang="en" id="facebook"><head><title>Error</title><meta charset="utf-8" /><meta http-equiv="Cache-Control" content="no-cache" /><meta name="robots" content="noindex,nofollow" /><style nonce="IBw3mkXn">html, body { color: #333; font-family: 'Lucida Grande', 'Tahoma', 'Verdana', 'Arial', sans-serif; margin: 0; padding: 0; text-align: center;}
#header { height: 30px; padding-bottom: 10px; padding-top: 10px; text-align: center;}
#icon { width: 30px;}
.core { margin: auto; padding: 1em 0; text-align: left; width: 904px;}
h1 { font-size: 18px;}
p { font-size: 13px;}
.footer { border-top: 1px solid #ddd; color: #777; float: left; font-size: 11px; padding: 5px 8px 6px 0; width: 904px;}</style></head><body><div id="header"><a href="//www.facebook.com/"><img id="icon" src="//static.facebook.com/images/logos/facebook_2x.png" /></a></div><div class="core"><h1>Sorry, something went wrong.</h1><p>We&#039;re working on getting this fixed as soon as we can.</p><p><a id="back" href="//www.facebook.com/">Go back</a></p><div class="footer"> Meta &#169; 2025 &#183; <a href="//www.facebook.com/help/?ref=href052">Help</a></div></div><script nonce="IBw3mkXn">
              document.getElementById("back").onclick = function() {
                if (history.length > 1) {
                  history.back();
                  return false;
                }
              };
            </script></body></html><!-- @codegen-command : phps GenerateErrorPages --><!-- @generated SignedSource<<a2e14b6d3c6a99777af41324d62f78e6>> -->

Resolver

Resolver ASN
AS15169
Resolver IP
74.125.41.18
Resolver Network Name
Google LLC
Report ID
20250928T115346Z_webconnectivity_TW_131584_n4_Q97iIwzXgwRjAUjS
Platform
linux
Software Name
ooniprobe-cli-unattended (3.22.0)
Measurement Engine
ooniprobe-engine (3.22.0)

Raw Measurement Data

Loading