Site report for http://www.amazon.co.uk

This is not a HTTPS site. If you're looking for SSL/TLS information try the HTTPS site report.

A host's Sender Policy Framework (SPF) describes who can send mail on its behalf. This is done by publishing an SPF record containing a series of rules. Each rule consists of a qualifier followed by a specification of which domains to apply this qualifier to. For more information please see open-spf.org.

Warning: It appears that this host does not have an SPF record. There may be an SPF record on amazon.co.uk: Check the site report.

Setting up an SPF record helps prevent the delivery of forged emails from your domain. Please note that an SPF record will only protect the domain it is added to and not any mail-enabled subdomains. It is recommended to add an SPF record to any subdomain with an MX record.

DMARC (Domain-based Message Authentication, Reporting and Conformance) is a mechanism for domain owners to indicate how mail purporting to originate from their domain should be authenticated. It builds on SPF and DKIM, providing a method to set policy and to give reporting of failures. For more information please see dmarc.org.

This host does not have a DMARC record. There may be a DMARC record on the site report for amazon.co.uk: Check the site report.

Web Trackers are third-party resources loaded onto a webpage. Trackable resources include social sharing widgets, javascript files, and images. These trackers can be used to monitor individual user behaviour across the web. Data derived from these trackers are primarily used for advertising or analytics purposes.

• Server-Side

  Includes all the main technologies that Netcraft detects as running on the server such as PHP.

  Technology	Description	Popular sites using this technology
  SSL	A cryptographic protocol providing communication security over the Internet

• Client-Side

  Includes all the main technologies that run on the browser (such as JavaScript and Adobe Flash).

  Technology	Description	Popular sites using this technology
  Local Storage	No description	portal.azure.com
  JavaScript	Widely-supported programming language commonly used to power client-side dynamic content on websites

• Client-Side Scripting Frameworks

  Frameworks or libraries allow for easier development of applications by providing an Application Program Interface (API) or a methodology to follow whilst developing.

  Technology	Description	Popular sites using this technology
  AJAX	No description	www.w3schools.com, www.roblox.com, www.amazon.fr
  jQuery	A JavaScript library used to simplify the client-side scripting of HTML	www.arco.co.uk, www.t-online.de, www.amazon.com

• E-Commerce

  Electronic commerce, commonly known as e-commerce, is the buying and selling of product or service over electronic systems such as the Internet and other computer networks.

  Technology	Description	Popular sites using this technology
  General Domain Holding	Loading temporary content under a domain name	www.samsung.com, www.walmart.com, www.ebay.com

• Web Stats

  Web analytics is the measurement, collection, analysis and reporting of internet data for purposes of understanding and optimizing web usage.

  Technology	Description	Popular sites using this technology
  Google Webmaster Tools	Set of tools allowing webmasters to check indexing status and optimize visibility of their websites on Google	vars.hotjar.com, 9gag.com, aws.amazon.com

• Character Encoding

  A character encoding system consists of a code that pairs each character from a given repertoire with something else such as a bit pattern, sequence of natural numbers, octets, or electrical pulses in order to facilitate the transmission of data (generally numbers or text) through telecommunication networks or for data storage.

  Technology	Description	Popular sites using this technology
  UTF8	UCS Transformation Format 8 bit	clickserve.dartsearch.net, googleads.g.doubleclick.net

• HTTP Compression

  HTTP compression is a capability that can be built into web servers and web clients to make better use of available bandwidth, and provide greater transmission speeds between both.

  Technology	Description	Popular sites using this technology
  Gzip Content Encoding	Gzip HTTP Compression protocol	www.tsetmc.com, www.seznam.cz, www.mathworks.com

• Web Browser Targeting

  Web browser targeting enables software applications to make use of specific functions of the browser as well as optimizing the application for specific browser versions.

  Technology	Description	Popular sites using this technology
  Document Compatibility Mode	A meta-tag used in Internet Explorer 8 to enable compatibility mode	www.paypal.com, teams.microsoft.com, yandex.ru
  X-Content-Type-Options	Browser MIME type sniffing is disabled	www.googleadservices.com, login.microsoftonline.com, gmail.com
  Strict Transport Security	Web security policy mechanism whereby a web server declares that complying user agents are to interact with it using only secure HTTP connections	www.facebook.com, static.addtoany.com, accounts.google.com
  Strict-Transport-Security (preload)	No description	discordapp.com, medium.com
  X-Frame-Options Same Origin	Do not allow this site to be rendered within an iframe	www.google.com, www.bitmex.com, disqus.com
  Strict-Transport-Security (including subdomains)	No description	paragon-na.amazon.com

• Doctype

  A Document Type Declaration, or DOCTYPE, is an instruction that associates a particular SGML or XML document (for example, a webpage) with a Document Type Definition (DTD).

  Technology	Description	Popular sites using this technology
  HTML5	Latest revision of the HTML standard, the main markup language on the web

• HTML 5

  HTML5 is a markup language for structuring and presenting content for the World Wide Web and a core technology of the Internet. It is the fifth revision of the HTML standard.

  Technology	Description	Popular sites using this technology
  MathML	No description	www.amazon.de, www.amazon.com.au, www.amazon.it

• CSS Usage

  Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation semantics (the look and formatting) of a document written in a markup language (such as XHTML).

  Technology	Description	Popular sites using this technology
  Embedded	Styles defined within a webpage	www.bbc.co.uk, www.amazon.ca, www.amazon.es
  External	Styles defined within an external CSS file	www.linkedin.com, www.amazon.co.uk, www.microsoft.com