fourmilab.ch

Find out what technologies fourmilab.ch is using
Document Standards

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 31536000 seconds


favicon.ico

favicon.ico

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   A favicon, also known as a shortcut icon, website icon, tab icon, URL icon, or bookmark icon, is a file containing one or more small icons, associated with a particular website or web page.

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HTTP Upgrade Header - HTTP/2

HTTP Upgrade Header - HTTP/2

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   The HTTP Upgrade mechanism is used to establish HTTP/2 starting from plain HTTP. The client starts an HTTP/1.1 connection and sends an Upgrade: h2c header. If the server supports HTTP/2, it replies with HTTP 101 Switching Protocol status code. The HTTP Upgrade mechanism is used only for cleartext HTTP2 (h2c). In the case of HTTP2 over TLS (h2), the ALPN TLS protocol extension is used instead.

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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.


Vary Header check for User-Agent

Vary Header check for User-Agent

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   When using the Vary: User-Agent header, caching servers should consider the user agent when deciding whether to serve the page from cache


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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Email Hosting Providers

G Suite

G Suite

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   formerly Google Apps for Work and Google Apps for Your Domain is a brand of cloud computing, productivity and collaboration tools, software and products developed by Google.

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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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Language

English - Language

English - Language

Download List of All Websites using English - Language

   this website is using English as a language parameter




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.




Document Encoding

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.




Document Standards

HSTS - Browser HTTPS Only for domain and subdomains

HSTS - Browser HTTPS Only for domain and subdomains

2023-05-08 / 2023-05-08

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favicon.ico

favicon.ico

2019-05-25 / 2023-05-08

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HTTP Upgrade Header - HTTP/2

HTTP Upgrade Header - HTTP/2

2019-05-25 / 2023-05-08

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SEO Robots : Allow to index and follow website links

SEO Robots : Allow to index and follow website links

2019-05-25 / 2023-05-08

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Vary Header check for User-Agent

Vary Header check for User-Agent

2019-05-25 / 2023-05-08

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Vary Header Accept-Encoding

Vary Header Accept-Encoding

2019-05-25 / 2023-05-08

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Email Hosting Providers

G Suite

G Suite

2019-05-25 / 2023-05-08

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SPF

SPF

2019-05-25 / 2023-05-08

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Language

English - Language

English - Language

2019-05-25 / 2023-05-08

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Operating Systems and Servers

OpenSSL  1.0.2k-fips

OpenSSL 1.0.2k-fips (removed)

2021-08-01 / 2021-08-01

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Apache 2.4.39

Apache 2.4.39 (removed)

2019-05-25 / 2019-05-25

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Web Servers

Server partial requests support

Server partial requests support

2019-05-25 / 2023-05-08

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Document Encoding

Gzip Content-Encoding

Gzip Content-Encoding

2021-08-01 / 2023-05-08

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Profile Details

Last technolgie detected on 2023-05-08 We know of 11 technologies on fourmilab.ch and 13 technologies detected on fourmilab.ch since 2019-05-25.




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