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Countries
OK
https://fbcdn.net/robots.txt
Serbia
Country
AS8400
Network
April 10, 2025, 01:15 AM UTC
Date & Time
Websites
Websites
Web Connectivity Test 
Runtime: 324ms
Share on Facebook or Twitter
On April 10, 2025, 01:15 AM UTC, https://fbcdn.net/robots.txt was accessible when tested on AS8400 in Serbia.

Failures

HTTP Experiment
null
DNS Experiment
null
Control
null

DNS Queries

Resolver:
79.101.65.161
Query:
IN A fbcdn.net
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
A
31.13.84.36
Query:
IN AAAA fbcdn.net
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
AAAA
2a03:2880:f107:83:face:b00c:0:25de

TCP Connections

Connection to 2a03:2880:f107:83:face:b00c:0:25de:443 was blocked.
Connection to 31.13.84.36:443 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: data: 'self' 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
Date:
Thu, 10 Apr 2025 01:15:32 GMT
Expires:
Sat, 01 Jan 2000 00:00:00 GMT
Origin-Agent-Cluster:
?1
Pragma:
no-cache
Proxy-Status:
http_request_error; e_fb_responsebytes="AcIuPSeVv7kC4BL-pBmrUxg0HjKJAvCXqJRrRMGifkSmvgPexHM3cWglgvbt"; e_fb_requesttime="AcLIlyg_lPNtwfTFZV41cFPuLsOHJ-s60LugcJU_4xPBMoO-3lXd7byvvQPBaQol6mwZk0ye1Q"; e_proxy="AcK3iKMf_5RhonU8SY1bwMKhOGRh0Lrp7DkcdED9kQk5ooDVBRsWJad7M-odSX476qhlpAWVyzdcqN6aOBsM"; e_fb_twtaskhandle="AcJ-b_8Pr5KPm9rMHin9iqRPL_vHLutwx2rQyLtp62yolunX50fEBlHIUWs7kZsOyP1wtKG4ox1HTdTDTA2tvelWNEw0WjiEUL7LWXYYJ8wb"; e_fb_requestsequencenumber="AcIs21mSvEWT_SlUl8xQqIad8CJeDAqplRIDMm1ENWOy2nqHfANEtmEnQI32CA"; e_upip="AcIgCtoNn7EreaNFxsy5-lPivKUQJedV1mNVSwtD0LFy5ZTpogkIfoF0rXecJDqBw2N_cfz6HDKNeJmiMxzdtZHE8y9bQhPCAVxL3g"; e_fb_zone="AcIafJQ46lEDqCrXL4yKl3yj6q-30n4Q_Azn2JQGfc5sO78MH4zrIAqOUMj2YrXv"; e_fb_binaryversion="AcLQrU2i2gpz3czghBFsPZ7M1vNawy8QP1FuRCkC0l9nh5FHEywS7Fle6EB9wdXCQ7_-GZq8F_4nNyewrhltTztytOBeUIfX8WQ"; e_fb_httpversion="AcJ3l5v-pwYC8j-vvn0w5FNeuXGs8kKEtQ_HVSaYhbc9FohtyOHC7WeMIF3c"; e_fb_requesthandler="AcKIT6qMAk8VHNPjpnbuMzQihteNDRcTQkerWevWqva2gjWjgZRxEyGhcAISUJTyrC4jwkV9-2U"; e_fb_configversion="AcIQOEa48fSP99kv-zXXWt7naG714yh0n-QDMtZZWZPbiG5dEAyVizvckqqWuQ"; e_fb_vipaddr="AcLeo3afAdRiRCkGbtZMQGixkRI1OiGBgWrOVuUXQTSr-oJ8Q05VW933DnJPUtIPQTKLaaTHDSmaMaGJpGy13q9X02g_6sD6Yw"; e_fb_hostheader="AcIpUBVmnkI2iVq643lsILbBFnazEP10U9nUgEbnFcPyfoZot1tDHbrlwB7vb8W2RZnm"; e_fb_builduser="AcLspoToCl-IPXVDx640MpvnWZ5va-jKRREKTY9Vtz7QITUZbwl0aRilsIK0hV8X8qQ"; e_fb_vipport="AcIouR-2nuHnWrE--Ex5BPjF_dnVrwPeeE6AuL2cteenD4vR3nLK5tvX2PCw"; e_clientaddr="AcIPwck0-FvAPZ7SfOdAd8huFZJ_oCYbGmtdZsHeHaepgpAf-AoUv6G2Lwq0cB1DtaVYkT5RfrHC_muiLryTMRSXnAqYWMUrMC38eAfj3UelPz2CaA", http_request_error; e_fb_requesttime="AcLrTU6dKwXWkNfF6aqYxyPgEwOC9TrT8UVgkot81xI2m3Bb7oKKPB1d6JzP64aws8dFLz-XmQ"; e_proxy="AcK92L_9bWoRF703PuQrTEIMTdq2kSsYa_v9-ShgOe2Wcy-RsemeMJ6JStWH4ebpm9KdsiuBIAyylqr3"; e_fb_twtaskhandle="AcLVlKH9XpVMFR2jbjJNhU73kbBbTJN2MPdZri0ywj_a1Hh_SgJ1TQtJTrJnJzZwyj-s5QSM8vAKTeGtexWmywB7Fy6Y3ZMJi5u5"; e_fb_requestsequencenumber="AcJ54tgBTc1WRubByI8sPtMWIx2j0hQoDgJbVOxRkba6wTx7jbqpMyVwGA"; e_upip="AcK5rNqzHmvKDqbEc4VoCNOZcqRBphilOWZF1L2QzT7CQmolBV2bpMK-astk3YtATqdhU7_7zWFgVhV8NJN3MQu921AqcYL5oA"; e_fb_zone="AcL2Hlda38F0dEDadKyFrozGMWpplQw0Po1pZWdduUuePtcl8GoLBjTzArDiCA"; e_fb_binaryversion="AcI9YDQdIPtAoh1reRtZmqpphvWuLMMwOZHGLitm4J31MYtFnPgFcWpDYUbrxR3BW-FnoW-OrVZp8Ra6mueDWDAGOdk30xSN_1U"; e_fb_httpversion="AcJSMmUj8CRLig58bE6BLJEozTPT1P6xc4nK6U8YVQhkqCVYNDN16dmZQUBn"; e_fb_requesthandler="AcL8xiHr_H6cpEM8a6-I_CmowzPr_Z3M9so-bH4dZY07iKsPJhiD124OhVeBC433CNjuWDItaTy5HturZMmIB8Ef"; e_fb_configversion="AcIZMyb55YLhGfD5jk1rnCpPFeVRVpcgDLu0fotx9c5j3yanP6JBpaqyMzz6pw"; e_fb_vipaddr="AcJI35gQubtQdHXKNK4mr1eP6VqVgIvVB51oom-21enAKdeUCrtzMO_VAPe4qhTtFa7EWus"; e_fb_hostheader="AcKkHAsXhWeBuVtodq7AMiVQYWavCV1H_fSwNbezXlldsXCXG9M9PnOavbnUWb858pLq"; e_fb_builduser="AcKGsmga6nRKTiikDC7mkhLBOWgeA98iguZWpcK1lr2aEuALKby-dq-wRKauRthOVGU"; e_fb_vipport="AcIW2tQYBMzWLEYX2CF5dchzJIhrcStQ5DyqnrniKb_UiMFapoGZcp24l4k_"; e_clientaddr="AcKDo7e0EvhAZJR8UFPSzsJav4GusCcTYGXx_CKeFRnTkiHP8nb_xbffWkXo2E6yVJh7m2q9rtQ5ufPTqaIs"
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=13, rtx=0, c=10, mss=1380, tbw=3632, tp=-1, tpl=-1, uplat=71, ullat=0
X-Fb-Debug:
FjdFUkK9ZwLhnGFSb9HVOy+0mt1iUUPvQLp0PKfzof159zyI9TPSedv0n8twlmg2cScO8nYwOYm0hOiIYrR2Ng==
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="oS1S7yfk">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="oS1S7yfk">
              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
AS8400
Resolver IP
79.101.65.161
Resolver Network Name
TELEKOM SRBIJA a.d.
Report ID
20250410T011307Z_webconnectivity_RS_8400_n1_zVNVSYAuPDgKFrpP
Platform
linux
Software Name
ooniprobe-cli-unattended (3.23.0)
Measurement Engine
ooniprobe-engine (3.23.0)

Raw Measurement Data

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