Koelner-vhs.de

koelner-vhs.de Profile

Title

Startseite | Kölner VHS

Description

Kursprogramm der Kölner VHS: rund 6.000 Kurse und Veranstaltungen in Sprachen, Gesundheit, Kultur, Beruf und Politischer Bildung.

Tags

{$meta.keywords}

Category

Science and Education / Education

The website koelner-vhs.de serves as the online platform for the Cologne Adult Education Center (Volkshochschule Köln), primarily aimed at providing educational opportunities for adult learners in various disciplines. Key features include a comprehensive course catalog, event listings, and detailed information on the center's programs, including language courses, professional development, and cultural workshops. The user interface is designed for ease of navigation, featuring a clean layout with intuitive menus and filters that allow users to search for courses based on their interests and needs. Overall, the site embodies a commitment to accessibility and lifelong learning within the community.

What technologies does koelner-vhs.de use?

These are the technologies used at koelner-vhs.de. koelner-vhs.de has a total of 8 technologies installed in 10 different categories.

Web Servers 1

Nginx

Reverse proxies 1

Nginx

Programming Languages 1

PHP

CMS 1

TYPO3 CMS

Analytics 1

Etracker

A/B Testing 1

Etracker

SSL/TLS certificate authorities 1

Let's Encrypt

Security 1

HSTS

Miscellaneous 1

Open Graph

JavaScript Libraries 1

Swiper

koelner-vhs.de Traffic Analysis

Koelner-vhs.de is ranked #280,747 in the world. This website is viewed by an estimated 1.9K visitors daily, generating a total of 10K pageviews. This equates to about 56.6K monthly visitors.

Daily Unique Visitors

1,867

Monthly Visits

56,570

Pages per Visit

5.37

Daily Pageviews

10,030

Avg. Visit Duration

03:46

Bounce Rate

42.18%

Global Reach

0.000031%

HypeRank

280,747

Organic Keywords (SEMrush)

84

Organic Traffic (SEMrush)

44

SEMrush Rank

5,276,657

Monthly Visits (SimilarWeb)

57,148

SimilarWeb Rank

427,380

Country Rank (SimilarWeb)

20,682

Category Rank (SimilarWeb)

346

*All traffic values are estimates only.

Backlinks Report

Koelner-vhs.de has a total of 27 backlinks from 23 referring domains and most of them comes from United States.

Which sites are competitors to koelner-vhs.de?

Websites similar to koelner-vhs.de are sites similar on user interests and browsing behavior. Users can discover new websites that are similar to the ones they already enjoy or find useful.

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Revenue Report

koelner-vhs.de would generate approximately $9.9 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $297 and annual gross revenue of approximately $3.6K. Based on these figures, the site's net worth is estimated at around $9K.

How much would koelner-vhs.de make?

How much is koelner-vhs.de worth?

*All earnings values are estimates only.

Impact of Ad Blockers

Ad Experience Report

Summary of the ad and abusive experience ratings Google assigns to koelner-vhs.de, per platform.

Where is koelner-vhs.de hosted?

Koelner-vhs.de may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.

Other sites hosted on 85.13.168.81

There are no other sites hosted on this IP.

How fast does koelner-vhs.de load?

The average loading time of koelner-vhs.de is 375 ms. The Desktop speed index is 44 and mobile speed index is 47.

Does koelner-vhs.de use compression?

Website compression is the process of reducing the size of website files, such as HTML, CSS, JavaScript, and image files, to improve website performance and load times. Compressing website files can significantly reduce the amount of data that needs to be transferred from the server to the user's browser, resulting in faster page load times and improved user experience. Files on koelner-vhs.de are reduced by 89%.

Google Safe Browsing

Google Safe Browsing is a service provided by Google that helps protect users from visiting websites that may contain malicious or harmful content, such as malware, phishing attempts, or deceptive software.

WOT MyWot.com Reputation Ratings

MyWOT (short for "My Web of Trust") is a web-based reputation and rating service that provides users with information about the trustworthiness and safety of websites.

Status

SAFE

SSL Checker SSL Certificate Verify

An SSL (Secure Sockets Layer) certificate is a digital certificate that establishes a secure encrypted connection between a web server and a user's browser. It provides authentication and encryption, ensuring that data transmitted between the server and the browser remains private and protected. koelner-vhs.de supports HTTPS.

Security Headers

HTTP security headers tell browsers how to protect visitors: force HTTPS, block clickjacking and limit what scripts can do. koelner-vhs.de sends 6 of the 6 recommended security headers, and its SSL certificate is issued by Let's Encrypt.

Strict-Transport-Security

present

Content-Security-Policy

present

X-Frame-Options

present

X-Content-Type-Options

present

Referrer-Policy

present

Permissions-Policy

present

SSL issuer

Let's Encrypt

SSL expires

2026-12-30 in 46 days

Email Security

SPF, DKIM and DMARC are DNS records that prove which servers may send email for a domain and tell receivers what to do with forged messages. koelner-vhs.de has SPF and an enforced DMARC policy, which protects it against email spoofing.

Email provider

no mail server (MX)

SPF

present

DMARC

quarantine

DKIM

not found on common selectors

DNSSEC

not signed

v=spf1 a:w0207743.kasserver.com ~all

AI Crawlers

Websites use robots.txt to allow or block AI crawlers that collect content for training and AI search. koelner-vhs.de does not block any known AI crawler.

OpenAI

partly blocked GPTBot, ChatGPT-User, OAI-SearchBot

Anthropic

partly blocked ClaudeBot, Claude-User, Claude-SearchBot

Google

partly blocked Google-Extended

Apple

partly blocked Applebot-Extended

Perplexity

partly blocked PerplexityBot, Perplexity-User

Meta

partly blocked meta-externalagent

llms.txt

present view

Verify HTTP/2 & HTTP/3 Support

HTTP/2 (Hypertext Transfer Protocol version 2) is a major revision of the HTTP protocol, which is the foundation of data communication on the World Wide Web. It was developed as an improvement over the previous HTTP/1.1 version to enhance web performance and efficiency. HTTP/3 goes a step further and runs over QUIC instead of TCP, for faster connections and better performance on unreliable networks.

Http Header

HTTP headers are extra portions of records despatched among a consumer (which include an internet browser) and a server at some stage in an HTTP request or response. They offer instructions, metadata, or manipulate parameters for the conversation among the consumer and server.

server: nginx
date: Fri, 13 Nov 2026 17:24:02 GMT
content-type: text/html; charset=iso-8859-1
content-length: 275
location: https://www.koelner-vhs.de/
referrer-policy: strict-origin-when-cross-origin
x-frame-options: SAMEORIGIN
content-security-policy: frame-ancestors 'self'
permissions-policy: camera=(), microphone=(), geolocation=(), payment=(), usb=()
cross-origin-opener-policy: same-origin-allow-popups
cache-control: max-age=0
expires: Fri, 13 Nov 2026 17:24:02 GMT

HTTP/2 200 
server: nginx
date: Fri, 13 Nov 2026 17:24:02 GMT
content-type: text/html; charset=utf-8
expires: Thu, 19 Nov 1981 08:52:00 GMT
pragma: no-cache
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
referrer-policy: strict-origin-when-cross-origin
content-language: de-DE
cache-control: private, no-store
set-cookie: PHPSESSID=174ff26cbdbc5f601f5b1438f828cdab; path=/
strict-transport-security: max-age=31536000; includeSubDomains
content-security-policy: frame-ancestors 'self'
permissions-policy: camera=(), microphone=(), geolocation=(), payment=(), usb=()
cross-origin-opener-policy: same-origin-allow-popups
vary: Accept-Encoding,User-Agent
content-encoding: br
x-ua-compatible: IE=edge
x-content-type-options: nosniff

DNS Lookup

DNS entries (Domain Name System) are a critical component of the Internet infrastructure. They act as directories that translate human-readable domain names (such as example.com) to machine-readable IP addresses. DNS records are stored on DNS servers and help forward internet traffic efficiently.

Whois Lookup

Domain WHOIS is a public database that provides information about domain names, including registered owners, contact information, domain registrars, registration and expiration dates, name servers, and other relevant information.

Domain Updated

2025-06-16

% Restricted rights.
% 
% Terms and Conditions of Use
% 
% The above data may only be used within the scope of technical or
% administrative necessities of Internet operation or to remedy legal
% problems.
% The use for other purposes, in particular for advertising, is not permitted.
% 
% The DENIC whois service on port 43 doesn't disclose any information concerning
% the domain holder, general request and abuse contact.
% This information can be obtained through use of our web-based whois service
% available at the DENIC website:
% https://webwhois.denic.de/?lang=en
% 
% 

Domain: koelner-vhs.de
Nserver: dns11.netcologne.de
Nserver: dns12.netcologne.de
Nserver: dns13.netcologne.de
Nserver: dns14.netcologne.de
Status: connect
Changed: 2025-06-16T14:40:05+02:00