Codeforces.com Web Analysis and Statistics

Website Summary

  • When was the website Codeforces.com released?

    Codeforces.com was registered on April 10, 2009 (15 years 14 days ago).

  • What is the traffic rank for Codeforces.com?

    Website Codeforces.com ranked 2,316 globally and 1,111 in China.

  • How many people visit Codeforces.com each day?

    Codeforces.com has about 550,000 visits and 3,300,000 pageviews per day.

  • What percent of global Internet users visit Codeforces.com?

    0.01% of global Internet users visit Codeforces.com

  • How much does Codeforces.com earn a month?

    Each month Codeforces.com can earn $84,000 from advertising revenue.

  • How much is Codeforces.com worth?

    Estimated value of Codeforces.com is $3,000,000

  • What IP addresses does Codeforces.com resolve to?

    Codeforces.com resolves to the IP addresses 213.248.110.126

  • Where is Codeforces.com server located?

    Codeforces.com's server is located in Brussels Hoofdstedelijk Gewest, Brussels, Belgium, 1210.

  • Who is registrar of Codeforces.com domain?

    The codeforces.com domain is registered and managed by Gandi SAS

Codeforces.com's metrics:

Global traffic rank:
2,316
Traffic rank in China:
1,111
Domain authority:
57 / 100
Daily income:
$2,800.00
Estimated Worth:
$3,000,000
Yahoo indexed pages:
84,100
Google Analytics ID:
UA-743380-5
Website category:
Technical/Business Forums
Safety status:
Safe

HTML Analysis

HTML Meta tags:

Title: Codeforces

Description: Codeforces. Programming competitions and contests, programming community

Logo: codeforces.com

HTML elements:

H1 Headings:
0
H2 Headings:
0
H3 Headings:
0
H4 Headings:
2
H5 Headings:
0
H6 Headings:
0
Total Images:
98
Total IFRAMEs:
0

Links analysis:

Total links:
418
Internal links:
274
Internal links (nofollow):
1
External links:
19
External links (nofollow):
0

HTML resources breakdown:

The homepage of codeforces.com contains 170 resources, the total size is 1.72 MB. They are distributed as follows:

Resource type Resource count Size Percent
Document 1 26.37 KB 1.5 %
Image 27 1.11 MB 64.3 %
Font 5 113.45 KB 6.4 %
Script 35 381.01 KB 21.6 %
Stylesheet 24 54.94 KB 3.1 %
Media 0 0 0 %
Other 78 53.20 KB 3 %

In addition, the codeforces.com homepage also uses 149 third-party resources, the total size is 450.66 KB.

HTTP Header:

Http-Version: 1.1
Status-Code: 200
Status: 200
Server: kittenx
Date: Mon, 30 Jan 2023 11:32:02 GMT
Content-Type: text/html;charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Cache-Control: private,no-cache,no-store,max-age=0,must-revalidate
Expires: -1
Pragma: no-cache
vary: accept-encoding
Content-Encoding: gzip
Strict-Transport-Security: max-age=86400
X-XSS-Protection: 1; mode=block
X-Frame-Options: sameorigin
X-Content-Type-Options: nosniff
X-Frontend: front220103

Codeforces.com Traffic Analysis

Daily unique visitors:
550,000
Daily pageviews:
3,300,000
Daily pageviews per visitor:
6.0
Monthly visits:
16,500,000
Annual visits:
200,750,000

Google Lighthouse Audit

Google Lighthouse is an open-source, automated tool for measuring the quality of web pages. Google Lighthouse audits websites on two separate mobile and desktop environments. Audit results are based on scores from 1-100 and are divided into 5 parts:

  • Performance: This is the most important part, it evaluates the performance of your website. Performance based on Core Web Vitals and key parameters such as First Contentful Paint (FCP), First Input Delay (FID), Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS).
  • Accessibility: Test user accessibility to your web application.
  • Best Practices: Website Trust and Safety testing, extensions, XSS, HTTPS...
  • SEO (on page): These checks ensure that your page is following basic search engine optimization advice.
  • Progressive Web App (PWA): Check out the modern technologies used on your web app.

Here are the results of the Google Lighthouse audit for the website codeforces.com:

On Mobile

60
Performance
84
Accessibility
67
Best Practices
85
SEO
0-49 50-89 90-100

On Desktop

90
Performance
74
Accessibility
75
Best Practices
82
SEO (on page)

Codeforces.com SSL Certificate Information

codeforces.com supports HTTPS with the following certificate information:

Common name: *.codeforces.com
SANs: *.codeforces.com, codeforces.com
Serial Number: 036E20B314AA6DA4764DD25F4BE99608645B
Signature Algorithm: RSA-SHA256
Issuer: R3
Fingerprint: d1405b6717f5219e4dc052b6ba96810a7f8b13da
FingerprintSha256: d310bac3c55aff409276a69cbf1a1561dbbc35d75e2f8ae2b438bd1679af48a6

Codeforces.com Domain Name Information

Domain TLD:
com
Domain Registrar:
Gandi SAS
Registration Date:
April 10, 2009
Expiration Date:
April 10, 2024
Domain Age:
15 years 14 days
Domain Status:
clientTransferProhibited

Domain Nameserver Information:

Host IP Address Country
dns1.yandex.net 213.180.204.213 🇷🇺 Russian Federation
dns2.yandex.net 93.158.134.213 🇷🇺 Russian Federation

Full WHOIS Lookup:

Domain Name: codeforces.com
Registry Domain ID: 1551886546_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gandi.net
Registrar URL: http://www.gandi.net
Updated Date: 2022-04-04T04:24:23Z
Creation Date: 2009-04-10T16:26:18Z
Registrar Registration Expiration Date: 2024-04-10T18:26:18Z
Registrar: GANDI SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +33.170377661
Reseller:
Domain Status: clientTransferProhibited http://www.icann.org/epp#clientTransferProhibited
Domain Status:
Domain Status:
Domain Status:
Domain Status:
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization:
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: Dublin
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: IE
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext:
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext:
Registrant Email: [email protected]
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:
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext:
Admin Email: [email protected]
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:
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext:
Tech Email: [email protected]
Name Server: DNS1.YANDEX.NET
Name Server: DNS2.YANDEX.NET
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
DNSSEC: Unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2023-01-30T11:31:57Z

Codeforces.com Server Information

Server IP Address:
213.248.110.126
Hosted Country:
🇧🇪 Belgium
Latitude, longitude:
50.8504 , 4.34878
Location:
Brussels Hoofdstedelijk Gewest, Brussels, Belgium, 1210

DNS Record Analysis:

Host Type TTL Extra
codeforces.com A 300 IP: 213.248.110.126
codeforces.com NS 900 Target: dns2.yandex.net
codeforces.com NS 900 Target: dns1.yandex.net
codeforces.com SOA 900 MNAME: dns1.yandex.net
RNAME: dns-hosting.yandex.ru
Serial: 579
Refresh: 900
Retry: 90
Expire: 86400
Minimum TTL: 900
codeforces.com MX 300 Priority: 10
Target: mx.yandex.net
codeforces.com TXT 21600 TXT: loaderio=17e74635884b3872197928c7ea0123c5
codeforces.com TXT 300 TXT: google-site-verification=l4G0k0hCtL44oR2JYae12tG2VSyD0ig5OEN4oKGz6IY
codeforces.com TXT 300 TXT: v=spf1 ip4:77.234.215.0/24 ip4:95.163.252.67/32 include:_spf.yandex.net -all

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