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OK
https://fbcdn.net/robots.txt
Switzerland
Country
AS3303
Network
April 04, 2025, 02:21 PM UTC
Date & Time
Websites
Websites
Web Connectivity Test 
Runtime: 547ms
Share on Facebook or Twitter
On April 04, 2025, 02:21 PM UTC, https://fbcdn.net/robots.txt was accessible when tested on AS3303 in Switzerland.

Failures

HTTP Experiment
null
DNS Experiment
null
Control
null

DNS Queries

Resolver:
193.135.142.33
Query:
IN A fbcdn.net
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
A
157.240.17.35
Query:
IN AAAA fbcdn.net
Engine:
system
Name
Class
TTL
Type
DATA
@
IN
AAAA
2a03:2880:f15b:83:face:b00c:0:25de

TCP Connections

Connection to 157.240.17.35:443 succeeded.
Connection to 2a03:2880:f15b:83:face:b00c:0:25de: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 blob: data: 'self';style-src 'unsafe-inline';connect-src *.facebook.com facebook.com *.fbcdn.net wss://*.facebook.com:* wss://*.fbcdn.net attachment.fbsbx.com blob: *.cdninstagram.com 'self';font-src data: blob: 'self';img-src data: blob: 'self';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;report-uri https://www.facebook.com/csp/reporting/?m=c&minimize=0;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:
Fri, 04 Apr 2025 14:21:14 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="AcLdnRBh-X4ssFrZ4uew3_AI_tpBjDUB9y6lPAdZvX56daoQn1bIwV8peUXT"; e_fb_requesttime="AcJpuRUi1EZK4I88HIuNS9vQWg8fYZ--AW7Cok0rzW5K0jqdoDOnEQMcRopQbk7wqDDvE6Zbyg"; e_proxy="AcLamsZSY-l8cQvCTPkfQ08Djj0fB3E7r1GZWEb5Q2Ot0pxT_aWZaV4BlIueKAvGnyfnE8D1ZVVo1IUZWslX"; e_fb_twtaskhandle="AcIPD0-_vY-UfRqR2lPtztOVPqQSrnaOLEX-6NhwaNFrSk0mN_FzmKdBYWFCeIA4dn7rmNNVd9psFP7wYae0UG0SsO_1EVoH2JgHydi7OCGrNQ"; e_fb_requestsequencenumber="AcJ5C9d_NBPbBES4IRs8M5-xscxQ5xmCfRZdKYQNsE4AFnvJ2ZMnld5rTdk"; e_upip="AcI-XrWY-PNwbUreBZ-VC1DnZbGbSofbUEl1Vu5UrLfMrhy3Ynr9SleVSOApDRX_vWQxY-GO4l_PVrnZ-34-_mA34595HC2_PBKK"; e_fb_zone="AcJwQgZQNoC74Jiwdk1xNNS9B-RxvgYalUUShrz2IPVgfeauF9J5BTuH3jUILwLb"; e_fb_binaryversion="AcLLa2Y0htzwAGAOq305B8zdCyPIQbA94SrgKUjdhK0JgOrP1eatlyNEugNXYC2R0VACtIGw4GfnppdOO8N4_69EXqCQ_Lqxi0Q"; e_fb_httpversion="AcJGD02CEHyAu-PAxchxMhAAjQPF-h6a6TDQ9nGq2jc_UZ0yTHj3Zm4y2hDk"; e_fb_requesthandler="AcI168bP8DJAYNWlTNarB6eeoVwRpBdqClGtUVjEdZAc9283cSC8-EsXV3M22fZ0mYe4ML_wrkE"; e_fb_configversion="AcJKqEUT8cpEwvdUMCntdk_XOtwWt7JTIXElEOHV76tH4Jy7nqr3ZWfm0h0-UA"; e_fb_vipaddr="AcJ0NrbdHXDlovz5VtOU6WLr1Jb1Tw0n2whcTk4VrG7WLrlhL02IwnanqxWN4E1RFEqa8GRRFUDIFmA6KeeslNH26bhRhTcVgw"; e_fb_hostheader="AcJJxA1z3IX4L5SYBwwQKo-cIbXsn13LW4K21nqMc4HKYkzUsBf5yY_k8WQr3PZw3PBS"; e_fb_builduser="AcId7sRYF9hxS9-BnTfD4ZQ_lDMCVqGtMlBYvZukghKPqwfnvcBtLA_9nXS8-Cvp9q0"; e_fb_vipport="AcJ1pvyiNDTv9mV_fDtp_BBla4RrKZekp6CK0Z823ctpm8faGJlsfVCJjlPk"; e_clientaddr="AcI3xcJRElkjb4nhgv4ZVZF4hBk0DZpit4CSUg35Tuo4kKGYfUkbU0VlUo0pAEyAxNa-fKvDlPD4UtffulJEqgvJRXRPL5OkV2ogjk-xWmJaVW9Y", http_request_error; e_fb_requesttime="AcL4APXUTALv_lnBrZJg9i579q539Chml7MQ0ag0-p7HpWaA0lnEoVWoEaTv3gXrlpm_kAoiWA"; e_proxy="AcKt1IqKtMfWjHY53uw2gwH9WTPrnn6maQO7k8yxCzw85Lpo9Xw7-Ce36WlWjyg-sHENmZmlxo7bneI"; e_fb_twtaskhandle="AcICzfuXzvwN4tgXZ90pK3L4I9QwXNK-Vgu9_gHMfQ6ciskoUD_aZl_CpTvp4_Wnpzd1WEif06msfKh4uvxC5AIWdN3Gnms2DW4"; e_fb_requestsequencenumber="AcImipUEZmSAC3UB1kNTNMB9nfSR-cqnsHf0rSzknb0LrJxXb05WEBgwaw"; e_upip="AcJLaIkknFQspVkx8FJQDGE47Xdco_crekZzJ_TPdw87QdcSREbsK7cjrTbk2YO02Tz_O-uneYIsFlFPEI7Vebawkb0QssmyDg"; e_fb_zone="AcJRRBJZpAIXV9KaRCmaaGgGNxWXOl_lT4kF8KHom9_Yp8avjs37N7YwQzY8kg"; e_fb_binaryversion="AcKYq_owRJFOd--y9iMLQTZNlgbpX8AY0d-73e5D67vYP3nLLMgdB-9kP4svSD4KkWcXYiJTw0DICiI-XY1sW3uHeITBXHSepUY"; e_fb_httpversion="AcLxjTjZSMda5ZR3KmCdqzBShcHg10c5B6CcbMc_BN4Z4OYKqg9sikGjGENV"; e_fb_requesthandler="AcIHL7s47bXr7Y6tDdrmfZYMxMWwLt_ESgsWUz1SwRqmDpnPY3YaNqWUyN5TdxJ0ccUjXZzFUgJiSMAi5qB0UC-I"; e_fb_configversion="AcKy-N5f77fb103Mhwrd1r2WYIfXALv4NBxufsZeXsxETUTNuYt731ccrvi_sg"; e_fb_vipaddr="AcKPit5yV5iLZ0TiVQtnkUgDhhjrHooDL352piUmnTT5PIWAKLhNCmJjnFFMfqFlqsN8u0bg3Q"; e_fb_hostheader="AcJqyjfczo1WIlrSyWAns6lWz-nLNy1PPSVUNvwlCFApQ3B8HUjF_reoMAXkETKr4AqY"; e_fb_builduser="AcLPiwY4bDJPjHcPGpMr_X2svTcdTkMF_xXpHRFifURfy-BJhTWpVMelWw9HYoZAwFo"; e_fb_vipport="AcK9n65YS1xli21BUAyQgGB1Q7BiPURme19ZNR46urRf9tlxJJwhkzePdTUk"; e_clientaddr="AcJDiRIrOJ7_P5HbeMYSPbX2cjUarVcYZ8BvV-qxQh9yUQpSjTf_mCM_80Mggsb0Gc1JdtGV9sPF7VOU8bg"
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=12, rtx=0, c=10, mss=1380, tbw=3610, tp=-1, tpl=-1, uplat=43, ullat=0
X-Fb-Debug:
eUHhhpWGpGgtzkk9RYfGISomp8WYZ4QM6KPv9sH1OCcPAU2YvYWAUPGAgWFU/Q59T8Tnr3fH2C40gR0nqNZ0tQ==
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="hBES72hK">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="hBES72hK">
              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
AS3303
Resolver IP
193.135.142.33
Resolver Network Name
Swisscom (Schweiz) AG
Report ID
20250404T141903Z_webconnectivity_CH_3303_n1_qKw77MhiC68pVGej
Platform
android
Software Name
ooniprobe-android-unattended (3.7.0)
Measurement Engine
ooniprobe-engine (3.15.2)

Raw Measurement Data

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