Ctfd.io CTFd : The Easiest Capture The Flag Platform

The best Capture The Flag framework out there for hiring hackers, training developers, and teaching students.

Ctfd.io Overview

Ctfd.io ranking shows that the page is at position 847,543 over the world, while the bulk of its audience is from Indonesia, where it ranks 195,349.

In terms of rank-to-traffic ratio, ctfd.io has 185 unique users per day, viewing 823 pages. The rank based value of ctfd.io is 6,314 USD. Every user makes 4.71 pageviews on average.

Ctfd.io boasts a link base consisting of 606 referring domains and 699 external backlinks, as revealed by the data obtained from web network scanning.

Ctfd.io top-level domain belongs to .IO domain zone. Check other webpages in .IO zone.

According the last verification test in June 04, 2021, ctfd.io has an expired SSL certificate issued by CloudFlare, Inc. (expired on July 06, 2021). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by CloudFlare, Inc..

Based on data from Google Safe Browsing, Google Safe Search and Symantec ctfd.io is a fairly safe domain.

According the Mobile-Friendly test by Google ctfd.io is nice optimized for mobile devices and tablets, however the webpage speed could be improved.

Ctfd.io Rank Summary

Global Rank

847,543

Average Load Time

0.00sec

Links In Count

Website Value

$5,846

Audience Geography. Where are ctfd.io visitors located?

Country	Visitors
Indonesia ID	5.4%
Other	94.6%

Country	Pageviews
Indonesia ID	8%
Other	92%

Country	Rank
Indonesia ID	195349

Where do visitors go on ctfd.io?

Subdomain	Pageviews
ctfd.io	24.67%
other	75.07%

Subdomain	Pageviews per User
ctfd.io	2

Subdomain	Reach
ctfd.io	60.87%

How popular is ctfd.io?

Period	Global Rank	Global Rank Delta
past 3 months	847543	2472
past month	1354869	723172
past week	2497424	206282

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	666045	-328080	5	77%	4.4	100%
30	1067740	611181	3	-68.557%	4	-22.01%
7	2089271	392391	1	-28.49%	3	-26.99%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	995723	167712	39	-18.18%
30	1621339	842036	2	-59.471%
7	2913582	104864	1	-2.08%

Ctfd.io Website Safety

Overview

Last Updated: 11/23/2024

Overall result - ctfd.io is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/31/2024

ctfd.io is safe.

Norton ConnectSafe evaluates ctfd.io for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 11/06/2017

ctfd.io is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

ctfd.io is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 03/12/2021

ctfd.io is safe.

McAfee assesses ctfd.io for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze ctfd.io for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 11/23/2024

ctfd.io child safety is unknown.

The WOT calculates reputation of the ctfd.io. This reputation system receives ratings from users and information from third-party sources, assesses the ctfd.io for safety features and confirms, whether ctfd.io is suitable for children.

SSL Information

SSL Checker Tool

Domain	sni.cloudflaressl.com
Issuer Organization	CloudFlare, Inc.
Issuer	Cloudflare Inc ECC CA-3
Algorithm	ecdsa-with-SHA256
Valid form	07/06/2020
Expiration	07/06/2021
Signed	Certificate is not self signed
Additional Domains	sni.cloudflaressl.com *.ctfd.io ctfd.io

Ctfd.io Rank History

Alexa Rank shows how popular ctfd.io is in comparison with other sites. The most popular site has Alexa Rank equals 1. If ctfd.io has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to ctfd.io and pageviews on ctfd.io over the past 3 months.

Ctfd.io Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 03/22/2024

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 13335
ASName: CLOUDFLARENET
ASHandle: AS13335
RegDate: 2010-07-14
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/autnum/13335

OrgName: Cloudflare, Inc.
OrgId: CLOUD14
Address: 101 Townsend Street
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2010-07-09
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/entity/CLOUD14

OrgTechHandle: ADMIN2521-ARIN
OrgTechName: Admin
OrgTechPhone: +1-650-319-8930
OrgTechEmail: rir@cloudflare.com
OrgTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

OrgAbuseHandle: ABUSE2916-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-650-319-8930
OrgAbuseEmail: abuse@cloudflare.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

OrgNOCHandle: NOC11962-ARIN
OrgNOCName: NOC
OrgNOCPhone: +1-650-319-8930
OrgNOCEmail: noc@cloudflare.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RNOCHandle: NOC11962-ARIN
RNOCName: NOC
RNOCPhone: +1-650-319-8930
RNOCEmail: noc@cloudflare.com
RNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RTechHandle: ADMIN2521-ARIN
RTechName: Admin
RTechPhone: +1-650-319-8930
RTechEmail: rir@cloudflare.com
RTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

RAbuseHandle: ABUSE2916-ARIN
RAbuseName: Abuse
RAbusePhone: +1-650-319-8930
RAbuseEmail: abuse@cloudflare.com
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Ctfd.io Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: ctfd.io
Registry Domain ID: 781d915c9d8d4e318e29fbd48c114d07-DONUTS
Registrar WHOIS Server: http://whois.cloudflare.com
Registrar URL: http://cloudflare.com
Updated Date: 2023-10-24T19:48:25Z
Creation Date: 2014-11-18T22:56:57Z
Registry Expiry Date: 2024-11-18T22:56:57Z
Registrar: Cloudflare, Inc
Registrar IANA ID: 1910
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: CTFd LLC
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: Brooklyn
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: terry.ns.cloudflare.com
Name Server: tia.ns.cloudflare.com
DNSSEC: signedDelegation
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2023-12-13T02:23:33Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

Ctfd.io HTML Check

HTML Validation Tool

Errors

Bad value “https://fonts.googleapis.com/css?family=Lora:400,400italic|Work+Sans:300,400,500,600” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.

Start tag “a” seen but an element of the same type was already open.

End tag “a” violates nesting rules.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Stray end tag “span”.

Stray end tag “a”.

Warnings

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Ctfd.io Desktop Performance

Last tested: 12/01/2017

Desktop Speed

56%

Optimize images

Enable compression

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Minify CSS

Minify JavaScript

Desktop Resource Breakdown

Total Resources	47
Number of Hosts	14
Static Resources	36
JavaScript Resources	11
CSS Resources	6

Ctfd.io Mobile Insights

Last tested: 11/30/2017

Mobile Usability

89%

Size tap targets appropriately

Mobile Speed

54%

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Enable compression

Optimize images

Leverage browser caching

Minify CSS

Minify JavaScript

Mobile Resource Breakdown

Total Resources	46
Number of Hosts	14
Static Resources	35
JavaScript Resources	11
CSS Resources	6

Ctfd.io Common Typos

www.ctfd.com
www.ctfd.net
www.ctfd.org
www.ctfd.info
www.ctfd.biz
www.ctfd.us
www.ctfd.mobi
www.tfd.io
www.ctfd.io
www.xtfd.io
www.cxtfd.io
www.xctfd.io
www.dtfd.io
www.cdtfd.io
www.dctfd.io
www.ftfd.io
www.cftfd.io
www.fctfd.io
www.vtfd.io
www.cvtfd.io
www.vctfd.io
www.cfd.io
www.crfd.io
www.ctrfd.io
www.crtfd.io
www.cffd.io
www.ctffd.io
www.cgfd.io
www.ctgfd.io
www.cgtfd.io
www.cyfd.io
www.ctyfd.io
www.cytfd.io
www.ctd.io
www.ctcd.io
www.ctfcd.io
www.ctcfd.io
www.ctdd.io
www.ctfdd.io
www.ctdfd.io
www.ctrd.io
www.ctfrd.io
www.cttd.io
www.ctftd.io
www.cttfd.io
www.ctgd.io
www.ctfgd.io
www.ctvd.io
www.ctfvd.io
www.ctvfd.io
www.ctf.io
www.ctfx.io
www.ctfdx.io
www.ctfxd.io
www.ctfs.io
www.ctfds.io
www.ctfsd.io
www.ctfe.io
www.ctfde.io
www.ctfed.io
www.ctfr.io
www.ctfdr.io
www.ctff.io
www.ctfdf.io
www.ctfc.io
www.ctfdc.io

Ctfd.io CTFd : The Easiest Capture The Flag Platform

The best Capture The Flag framework out there for hiring hackers, training developers, and teaching students.

Ctfd.io Overview

Ctfd.io Rank Summary

Ctfd.io Website Safety

Ctfd.io Rank History

Ctfd.io Hosting Information

Ctfd.io Domain Registration and Settings

Ctfd.io HTML Check

Ctfd.io Desktop Performance

Ctfd.io Mobile Insights

Ctfd.io Similar Audits

Ctfd.io Common Typos