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ctfd.io

ctfd.io had about 95.79K visits in September 2026, down 2.67% from August; most traffic is direct.

CTFd : The Easiest Capture The Flag Platform

Traffic

95.79K

-2.67%MoMEstimated monthly visits
789119.92K79.95K39.97K0
Global rank

254,836

Country rank · India

44,599

Category rank · Computer Security

130

Average visit duration

06:29

Pages per visit

7.09

Bounce rate

31.77%

Domain age

12 years

Search share

20.9%

Traffic sources

  • Direct
    63.8%
  • Search
    20.9%
  • Referrals
    7.1%
  • Social
    3.8%
  • Email
    3.1%
  • Generative AI
    1.4%
  • Other
    0.0%
  • Paid search
    0.0%

Regions

  • India
    35.7%
  • Canada
    25.9%
  • United States
    12.5%
  • Indonesia
    3.8%
  • Mexico
    2.9%

See how ctfd.io compares with the most visited websites in the world, the fastest growing websites and sites gaining organic search traffic.

Search visibility

Keyword samples

Estimated visitsMonthly searchesVisits ÷ searches
  1. ctfdBRAND1.55K1.71K91%
  2. ctf platform310220141%
  3. ctfd access tokenBRAND290220132%
  4. how complicated is it to build my own ctf game25027093%
  5. ctfs19029.71K1%

Keyword rankings

Keyword rankings

Example · google.comUnited States · English

86.4M

Search estimate

New 1 · Up 2

Ranking keywords
12,400
Landing pages
4
Search competitors
4
AI citations
2
PositionEstimated visits
  1. google#142M
  2. gmail#118.2M
  3. google maps#19.4M
  4. google drive#14.1M

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Baidu rank

Site profile

  • HTTP 200
  • Email authentication
  • Hosting ASN
  • DNSSEC
HTTP
200
Page size
38.1 KiB
Hosting
CLOUDFLARENET · AS13335
Email authentication
SPF · DMARC none
TLS
TLSv1.3 · 33 days
Page and SEO
Title
CTFd : The Easiest Capture The Flag Platform
Description
The best Capture The Flag framework out there for hiring hackers, training developers, and teaching students.
Cross-origin redirect
No
Word count
833
Internal / external links
24 / 4
H1 / H2
22 / 0
Images missing alt
0 / 33
OG / Twitter
OG · Twitter
Technology and tracking1 tracking
Technology clues
Tailwind · Cloudflare
Tracking clues
Google Analytics
External script hosts
cdn.tailwindcss.com
Social links
github.com · x.com · facebook.com · github.com
Server
cloudflare
Security headers
2 / 6
Alt-Svc
Set
Email and DNS securitySet
SPF
Set
DMARC
Set · none
DKIM selectors
google
Mail stack
Google Workspace
IPv6
AAAA present
DNSSEC
DNSKEY · AD
Site verification TXT
Google
SOA
terry.ns.cloudflare.com
NS
tia.ns.cloudflare.com. · terry.ns.cloudflare.com.
MX
1 aspmx.l.google.com. · 5 alt1.aspmx.l.google.com. · 5 alt2.aspmx.l.google.com. · 2 more
Hosting and networkAS13335
A
104.21.19.74 · 172.67.185.159
AAAA
2606:4700:3032::ac43:b99f · 2606:4700:3036::6815:134a
Hosting ASN
AS13335 · 104.21.16.0/20
Hosting organization
CLOUDFLARENET - Cloudflare, Inc.
Hosting country
US
BGP announcement
Yes
TLS
TLSv1.3 · Verified
Certificate issuer
WE1
Certificate remaining
33 days
Certificate SAN
DNS:ctfd.io
robots and AI crawlingHTTP 200
Robots.txt
200
Global Disallow /
No
AI explicitly disallowed
0
AI explicitly allowed
0
Well-known public paths
Present / checked
0 / 5

Website information

Domain
ctfd.io
Registration status
Domain registered
Registered
2014-11-18
Registrar
Cloudflare, Inc
Expires
2026-11-18
Domain age
12 years
DNSSEC
Yes
Registry status
client transfer prohibited

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What's in this report

The report starts with a whole-site monthly visit estimate. Search visibility and public site facts follow when they exist.

  • Website traffic is a modeled whole-site estimate, with a source, observation period and confidence.
  • Search visibility is ranking keywords and search traffic, listed separately from whole-site visits.
  • Missing or partial values stay marked in the report.