21instagram.ru

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Document Standards

Keep-Alive for 30 secs

Keep-Alive for 30 secs

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   The Keep-Alive general header allows the sender to hint about how the connection may be used to set a timeout and a maximum amount of requests.


Pragma Header - backwards compatibility with HTTP/1.0

Pragma Header - backwards compatibility with HTTP/1.0

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   The Pragma HTTP/1.0 general header is an implementation-specific header that may have various effects along the request-response chain. It is used for backwards compatibility with HTTP/1.0 caches where the Cache-Control HTTP/1.1 header is not yet present.


Meta Description

Meta Description

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   A meta description is a 160-character snippet, a meta tag in HTML, that summarizes a page`s content. this website is having meta description of the following : Обучение инстаграм. Таргетированная реклама и раскрутка личного бренда. Продвижение и сервисы для instagram. Кейсы, Индвидуальное и групповое обучение и до результата.


No Cache Content

No Cache Content

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   Forces caches to submit the request to the origin server for validation before releasing a cached copy.


NO Store HTTP Cache-Control

NO Store HTTP Cache-Control

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   The cache should not store anything about the client request or server response.

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Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control

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   Indicates that once a resource has become stale (e.g. max-age has expired), a cache must not use the response to satisfy subsequent requests for this resource without successful validation on the origin server.

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Cache-Control Header Max-Age

Cache-Control Header Max-Age

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   Specifies the maximum amount of time a resource will be considered fresh. Contrary to Expires, this directive is relative to the time of the request. this website is having max-age=0 secs.


schema.org micro-markup

schema.org micro-markup

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   Schema.org is a collaborative, community activity with a mission to create, maintain, and promote schemas for structured data on the Internet, on web pages, in email messages, and beyond.

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Vary Header Accept-Encoding

Vary Header Accept-Encoding

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   The Accept-Encoding request HTTP header advertises which content encoding, usually a compression algorithm, the client is able to understand. Using content negotiation, the server selects one of the proposals, uses it and informs the client of its choice with the Content-Encoding response header.

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Operating Systems and Servers

Nginx

Nginx

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   Nginx is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and first publicly released in 2004. A company of the same name was founded in 2011 to provide support and Nginx plus paid software.

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Widgets

Google Fonts API

Google Fonts API

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   Making the web more beautiful, fast, and open through great typography.this website is using Open+Sans:400,700 font family

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Twitter Cards

Twitter Cards

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   With Twitter Cards, you can attach rich photos, videos and media experiences to Tweets, helping to drive traffic to your website.


Gravatar

Gravatar

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   Your Gravatar is an image that follows you from site to site appearing beside your name when you do things like comment or post on a blog. Avatars help identify your posts on blogs and web forums, so why not on any site?

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WordPress DNS Prefetching

WordPress DNS Prefetching

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   DNS prefetching is an attempt to resolve domain names before a user tries to follow a link. This is done using the computer`s normal DNS resolution mechanism

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Email Hosting Providers

SPF

SPF

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   The Sender Policy Framework (SPF) is an email-authentication technique which is used to prevent spammers from sending messages on behalf of your domain. With SPF an organisation can publish authorized mail servers.

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Content Management System

WordPress

WordPress

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   WordPress is a content management system based on PHP and MySQL that is usually used with the MySQL or MariaDB database servers but can also use the SQLite database engine.




Document Encoding

Character Encoding :UTF-8

Character Encoding :UTF-8

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   This website is using UTF-8 character encoding in HTML , character encoding is used to represent a repertoire of characters by some kind of encoding system.


Gzip Content-Encoding

Gzip Content-Encoding

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   The Content-Encoding entity header is used to compress the media-type. When present, its value indicates which encodings were applied to the entity-body. It lets the client know how to decode in order to obtain the media-type referenced by the Content-Type header.




Web Servers

Server partial requests support

Server partial requests support

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   The Accept-Ranges response HTTP header is a marker used by the server to advertise its support of partial requests. The value of this field indicates the unit that can be used to define a range.




Mobile

Viewport  - Width

Viewport - Width

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   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

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Viewport  - Mobile compatible

Viewport - Mobile compatible

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   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

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Viewport  - initial-scale

Viewport - initial-scale

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   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

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Audio / Video Media

Youtube

Youtube

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   YouTube is an American online video sharing and social media platform launched by Steve Chen, Chad Hurley, and Jawed Karim in February 2005. After Google, YouTube is the most visited website worldwide, with over one billion monthly users.

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Document Standards

Keep-Alive for 30 secs

Keep-Alive for 30 secs

2019-05-26 / 2021-08-12

|

Pragma Header - backwards compatibility with HTTP/1.0

Pragma Header - backwards compatibility with HTTP/1.0

2019-05-26 / 2021-08-12

|

Meta Description

Meta Description (removed)

2019-05-26 / 2019-05-26

|

No Cache Content

No Cache Content

2019-05-26 / 2021-08-12

|

NO Store HTTP Cache-Control

NO Store HTTP Cache-Control

2019-05-26 / 2021-08-12

|

Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control

2019-05-26 / 2021-08-12

|

Cache-Control Header Max-Age

Cache-Control Header Max-Age

2019-05-26 / 2021-08-12

|

schema.org micro-markup

schema.org micro-markup (removed)

2019-05-26 / 2019-05-26

|

Vary Header Accept-Encoding

Vary Header Accept-Encoding

2019-05-26 / 2021-08-12

|



Operating Systems and Servers

Nginx

Nginx (removed)

2019-05-26 / 2019-05-26

|

Nginx

Nginx

2021-08-12 / 2021-08-12

|



Widgets

Google Fonts API

Google Fonts API (removed)

2019-05-26 / 2019-05-26

|

Twitter Cards

Twitter Cards (removed)

2019-05-26 / 2019-05-26

|

Gravatar

Gravatar (removed)

2019-05-26 / 2019-05-26

|

WordPress DNS Prefetching

WordPress DNS Prefetching (removed)

2019-05-26 / 2019-05-26

|



Email Hosting Providers

SPF

SPF (removed)

2019-05-26 / 2019-05-26

|



Content Management System

WordPress

WordPress (removed)

2019-05-26 / 2019-05-26

|



Document Encoding

Character Encoding :UTF-8

Character Encoding :UTF-8

2019-05-26 / 2021-08-12

|

Gzip Content-Encoding

Gzip Content-Encoding

2021-08-12 / 2021-08-12

|



Web Servers

Server partial requests support

Server partial requests support (removed)

2019-05-26 / 2019-05-26

|



Mobile

Viewport  - Width

Viewport - Width (removed)

2019-05-26 / 2019-05-26

|

Viewport  - Mobile compatible

Viewport - Mobile compatible (removed)

2019-05-26 / 2019-05-26

|

Viewport  - initial-scale

Viewport - initial-scale (removed)

2019-05-26 / 2019-05-26

|



Audio / Video Media

Youtube

Youtube (removed)

2019-05-26 / 2019-05-26

|



Profile Details

Last technolgie detected on 2021-08-12 We know of 23 technologies on 21instagram.ru and 24 technologies detected on 21instagram.ru since 2019-05-26.




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