Contacts, activities, companies, branches, online stores — 21vek-courses.ru
Database of websites
548 pcs.
Category:
Центр повышения квалификации
City:
Санкт-Петербург
2 466 ₽
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Information from the site
Information that we collected when analyzing the site
Update date: 09.04.2026
URL site
A unique address of the page on the Internet, on which it can be found and opened in a browserTitle
The title of the page that is displayed in the browser tab and serves as the main name of the pages for search engines and usersDescription
A brief description of the contents of the page, which is often shown in the search results under the heading and helps users understand what the page is aboutTechnologies
Technologies used on the site
Rating and reviews
Analysis, summaries and metrics based on reviews by year
4,57
23reviews
Update date: 02.12.2025
Customer Satisfaction Index
Shows general mood (from -100 to 100)63.64
Opinion polarization coefficient
Сloser to 1 - opinions are divided (lots of 1s and 5s), closer to 0 - scores are balanced0.82
Overall average rating for the year
4.55
Review analysis
Качество обучения36 reviews
30
4
Преподаватели32 reviews
26
4
Образование28 reviews
26
2
Contacts
Contacts that we collected when analyzing the site
Update date: 09.04.2026
Activity
Categories and cities in which activities are carried out
Update date: 02.12.2025
Categories
Website related categoriesCities
Cities where the website has branchesDetails
Details found on the pages of the site
Update date: 09.04.2026
TIN
The taxpayer identification numberSite rating
The site's rating according to analytical services
Update date: 13.12.2025
URL site
The address of the site that owns the ratingSite quality index (X)
An indicator of popularity and demand for a site among users according to analytical servicesThe number of reviews
The number of positive reviews
The number of negative reviews
Site traffic
Metric traffic obtained in the analysis of site visits
Update date: 04.09.2025
Traffic dynamicsChanging the number of visits for the selected period
Geography of the audienceCountries from which visitors of the site come
Sources of trafficThe channels from which visitors come (search, direct call, social networks, etc.)
Sources of trafficThe channels from which visitors come (search, direct call, social networks, etc.)
Visits
The number of site visits for the selected periodPages for a visit
The average number of viewed pages in one visitTime on the site
The average time spent by the user on the site in secondsRefusal indicator
The percentage of users who left the site after watching only one pageSite positioningSite positions in various ratings and categories
Global rating
Site site in the world attendance ratingRating in the country
Site site in the attendance rating by countryCategory rating
Site site in the rating in the selected categoryCategory
The main category of the siteTop keywordsThe most popular keywords for the site
Site headers
Information about HTTP headings received when website request
Update date: 09.04.2026
Status code
HTTP server response, indicating the result of the requestProtocol
Data transmission protocol used by the server (for example, HTTP or HTTPS)IP server address
IP address of server, which processed a requestCaching (Cache-Control)
Instructions for caching the response by a browser or proxyThe date of the answer
The time when the server formed the answerServer
Information about server software that processed a requestInstalled cookies
Cooks that the server installed in the answerThe length of the contents
Body body size in bytesVary
The heading that indicates what parameters the answer may changeCompound
Information about the type of connection (for example, Keep-Alive or Close)X-Frame-Options
Policy from the implementation of the page in iframeReply message
Text message accompanying status codeDNS Information
Data obtained in the analysis of the domain zone
Update date: 19.02.2026
URL
The address at which DNS-records were requestedA-record
IPV4 addresses, to which the domain is attachedA-record (www)
IPV4 Address Pontodomen wwwNS-records
Name servers (NAME Servers) serving the domainBasic NS (Soa)
The main server of the names indicated in the Soa-recordAdministrator email (soa)
Email address responsible for the domain specified in the Soa-recordInformation Whois
Whois data containing information about the domain and its owner
Update date: 17.03.2026
URL domain
The unique address of the domain on the InternetTIN
Organization taxpayer identification numberRegistrar
The company through which the domain is registeredOrganization
The name of the owner of the domainDNS servers
List of DNS servers related to the domainThe date of creation
Date of registration of domainThe end of the registration
Date when the domain registration period endsRelated organizations
Relations map with other organizations
1
Related sites
Relations map with other websites
50
Similar websites
Websites that engage in similar activities
13
Related phone numbers
Telephone numbers indicated in open sources
4
Related branches
Branches that belong to this organization
1