1und1.de

Find out what technologies 1und1.de is using
Email Hosting Providers

Microsoft Office 365

Microsoft Office 365

Download List of All Websites using Microsoft Office 365

   Microsoft Office 365 is a Software as a Service (SaaS) solution that includes Microsoft Office and other services, such as email and collaboration, from Microsoft’s cloud server. Microsoft Office 365 provides desktop functionalities and is available by subscription.

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SPF

SPF

Download List of All Websites using SPF

   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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Language

German -  Language

German - Language

Download List of All Websites using German - Language

   this website is using German as a language parameter




Audio / Video Media

Youtube

Youtube

Download List of All Websites using Youtube

   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 15 secs

Keep-Alive for 15 secs

Download List of All Websites using Keep-Alive for 15 secs

   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

Download List of All Websites using Pragma Header - backwards compatibility with HTTP/1.0

   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.


SEO Robots : Allow to index and follow website links

SEO Robots : Allow to index and follow website links

Download List of All Websites using SEO Robots : Allow to index and follow website links

   Meta robots tag is a tag that tells search engines what to follow and what not to follow.


No Cache Content

No Cache Content

Download List of All Websites using No Cache Content

   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

Download List of All Websites using NO Store HTTP Cache-Control

   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

Download List of All Websites using Must Revalidate HTTP Cache-Control

   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

Download List of All Websites using Cache-Control Header Max-Age

   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

Download List of All Websites using schema.org micro-markup

   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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HSTS - Browser HTTPS Only for domain and subdomains

HSTS - Browser HTTPS Only for domain and subdomains

Download List of All Websites using HSTS - Browser HTTPS Only for domain and subdomains

   The HTTP Strict-Transport-Security response header (often abbreviated as HSTS) lets a web site tell browsers that it should only be accessed using HTTPS, instead of using HTTP for domain and subdomainsfor 15552001 seconds




Mobile

Disable Telephone link in HTML on Mobile Devices

Disable Telephone link in HTML on Mobile Devices

Download List of All Websites using Disable Telephone link in HTML on Mobile Devices

   Telephone links are a thing. Like an anchor link you tap to (probably) go to another page, these are links you tap to call a number on a phone-capable device.


Theam Color Supported for Chrome on Android

Theam Color Supported for Chrome on Android

Download List of All Websites using Theam Color Supported for Chrome on Android

   What was your feeling when you visited a website on your mobile phone that happened to have the menu bar change into a different color other than Chrome’s default color




Operating Systems and Servers

Nginx

Nginx

Download List of All Websites using Nginx

   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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Document Encoding

Character Encoding :UTF-8

Character Encoding :UTF-8

Download List of All Websites using Character Encoding :UTF-8

   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

Download List of All Websites using Gzip Content-Encoding

   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.


Chunked transfer encoding

Chunked transfer encoding

Download List of All Websites using Chunked transfer encoding

   Chunked transfer encoding is a streaming data transfer mechanism available in version 1.1 of the Hypertext Transfer Protocol (HTTP). In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks"




Widgets

Twitter Cards

Twitter Cards

Download List of All Websites using Twitter Cards

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




Email Hosting Providers

Microsoft Office 365

Microsoft Office 365

2019-05-25 / 2025-09-21

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SPF

SPF

2019-05-25 / 2025-09-21

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Document Standards

Private Cache-Control Header

Private Cache-Control Header (removed)

2019-05-25 / 2019-05-25

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Keep-Alive for 15 secs

Keep-Alive for 15 secs

2019-05-25 / 2025-09-21

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Meta Description

Meta Description (removed)

2019-05-25 / 2019-05-25

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HSTS - Browser HTTPS Only for domain and subdomains

HSTS - Browser HTTPS Only for domain and subdomains (removed)

2021-08-02 / 2023-05-09

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Pragma Header - backwards compatibility with HTTP/1.0

Pragma Header - backwards compatibility with HTTP/1.0

2025-09-21 / 2025-09-21

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SEO Robots : Allow to index and follow website links

SEO Robots : Allow to index and follow website links

2021-08-02 / 2025-09-21

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No Cache Content

No Cache Content

2025-09-21 / 2025-09-21

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NO Store HTTP Cache-Control

NO Store HTTP Cache-Control

2025-09-21 / 2025-09-21

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Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control

2025-09-21 / 2025-09-21

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Cache-Control Header Max-Age

Cache-Control Header Max-Age

2025-09-21 / 2025-09-21

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schema.org micro-markup

schema.org micro-markup

2019-05-25 / 2025-09-21

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HSTS - Browser HTTPS Only for domain and subdomains

HSTS - Browser HTTPS Only for domain and subdomains

2025-09-21 / 2025-09-21

|

NO Store HTTP Cache-Control

NO Store HTTP Cache-Control (removed)

2021-08-02 / 2023-05-09

|

Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control (removed)

2021-08-02 / 2023-05-09

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Cache-Control Header Precedence Max-Age

Cache-Control Header Precedence Max-Age (removed)

2021-08-02 / 2023-05-09

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Vary Header Accept-Encoding

Vary Header Accept-Encoding (removed)

2021-08-02 / 2023-05-09

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Meta Description

Meta Description (removed)

2021-08-02 / 2021-08-02

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Language

German -  Language

German - Language

2021-08-02 / 2025-09-21

|



Audio / Video Media

Youtube

Youtube

2019-05-25 / 2025-09-21

|



Mobile

Viewport  - Width

Viewport - Width (removed)

2021-08-02 / 2023-05-09

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Viewport  - initial-scale

Viewport - initial-scale (removed)

2021-08-02 / 2023-05-09

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Disable Telephone link in HTML on Mobile Devices

Disable Telephone link in HTML on Mobile Devices

2019-05-25 / 2025-09-21

|

Theam Color Supported for Chrome on Android

Theam Color Supported for Chrome on Android

2021-08-02 / 2025-09-21

|

Viewport  - Width

Viewport - Width (removed)

2019-05-25 / 2019-05-25

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Viewport  - initial-scale

Viewport - initial-scale (removed)

2019-05-25 / 2019-05-25

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Viewport  - Mobile compatible

Viewport - Mobile compatible (removed)

2019-05-25 / 2019-05-25

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Operating Systems and Servers

Nginx

Nginx

2019-05-25 / 2025-09-21

|



Document Encoding

Character Encoding :UTF-8

Character Encoding :UTF-8

2021-08-02 / 2025-09-21

|

Gzip Content-Encoding

Gzip Content-Encoding

2021-08-02 / 2025-09-21

|

Character Encoding :UTF-8

Character Encoding :UTF-8 (removed)

2019-05-25 / 2019-05-25

|

Chunked transfer encoding

Chunked transfer encoding

2019-05-25 / 2025-09-21

|



Widgets

Twitter Cards

Twitter Cards

2023-05-09 / 2025-09-21

|



Profile Details

Last technolgie detected on 2025-09-21 We know of 20 technologies on 1und1.de and 34 technologies detected on 1und1.de since 2019-05-25.




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