This site can't be accessed using a TLS protocol newer than TLSv1.0. TLSv1.0 is considered insecure. Sites which don't support TLSv1.2 or newer are expected to become inaccessible in modern browsers during March 2020.
|Site title||O2 | Mobile Phones, Mobile Broadband and Sim Only Deals on O2|
|Description||O2 is a leading provider of mobile phones, mobile broadband and sim only deals. Explore My O2, Priority, O2 Refresh, O2 WiFi and much more at O2.co.uk.|
|Date first seen||August 2006|
|Netcraft Risk Rating||0/10|
|Netblock Owner||O2 Online (UK)|
|IP address||22.214.171.124 (VirusTotal)|
|IPv6 address||Not Present|
|Top Level Domain||United Kingdom (.co.uk)|
|DNS Security Extensions||unknown|
|0.0.0.0-255.255.255.255||N/A||IANA-BLK||The whole IPv4 address space|
|↳ 126.96.36.199-188.8.131.52||Netherlands||82-RIPE||RIPE Network Coordination Centre|
|↳ 184.108.40.206-220.127.116.11||United Kingdom||UK-O2UK-20030814|
|↳ 18.104.22.168-22.214.171.124||United Kingdom||O2online||O2 Online (UK)|
|↳ 126.96.36.199||United Kingdom||O2online||O2 Online (UK)|
Last Reboot (49 days ago)
Note: Uptime - the time since last reboot is explained in the FAQ
|Plotted Value||No. samples||Max||Latest|
|47-day Moving average||48||73.75||28.43|
|Organisation||TELEFONICA UK LIMITED|
|Subject Alternative Name||www.o2.co.uk, o2.co.uk|
|Validity period||From Mar 4 2019 to Mar 15 2021 (24 months, 1 week, 4 days)|
|Public key algorithm||rsaEncryption|
|Public key length||2048|
|Perfect Forward Secrecy||Yes|
|Next Protocol Negotiation||Not Present|
|Supported TLS Extensions||RFC5746 renegotiation info|
|Issuing organisation||DigiCert Inc|
|Issuer common name||Thawte EV RSA CA 2018|
|Issuer location||Not Present|
|Issuer state||Not Present|
|Certificate Revocation Lists||
|Public Key Hash||58d7c1fd053cb6bfc13f24a758307748806f440ea3f9910ed68f6d4e7be00e60|
|OCSP servers||http://status.thawte.com - 100% uptime in the past 24 hours
|OCSP stapling response||No response received|
Signed Certificate Timestamps (SCTs)
Google EV whitelist
Certificate is not in Google's EV whitelist.
This site does not support the SSL version 3 protocol.
The site offered the Heartbeat TLS extension prior to the Heartbleed disclosure, but is using a new certificate and no longer offers Heartbeat.
This test does not exploit the Heartbleed vulnerability but uses information from conventional HTTPS requests. More information about Heartbleed detection.
SSL Certificate Chain
|Common name||DigiCert High Assurance EV Root CA|
|Validity period||From 2006-11-10 to 2031-11-10|
|Common name||Thawte EV RSA CA 2018|
|Validity period||From 2017-11-06 to 2027-11-06|
|Netblock owner||IP address||OS||Web server||Last seen|
|O2 Online UK||188.8.131.52||Solaris 9/10||Apache||2-Apr-2020|
Sender Policy Framework
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.
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.
Site Technology (fetched 11 days ago)
A web accelerator is a proxy server that reduces web site access times.
Includes all the main technologies that Netcraft detects as running on the server such as PHP.
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.
Content Delivery Network
A content delivery network or content distribution network (CDN) is a large distributed system of servers deployed in multiple data centers in the Internet. The goal of a CDN is to serve content to end-users with high availability and high performance.
Content Management System
A content management system (CMS) is a computer program that allows publishing, editing and modifying content as well as maintenance from a central interface.
PHP is an open source server-side scripting language designed for Web development to produce dynamic Web pages.
Web analytics is the measurement, collection, analysis and reporting of internet data for purposes of understanding and optimizing web usage.
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.
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.
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 Expect Certificate Transparency Header Enforce Certificate Transparency requirements www.chess.com, www.researchgate.net, www.upwork.com Expect Certificate Transparency Report Header Report the use of misissued certificates for a site www.kraken.com, static.addtoany.com, 9gag.com Document Compatibility Mode A meta-tag used in Internet Explorer 8 to enable compatibility mode www.ebay.com, www.amazon.es, teams.microsoft.com X-Content-Type-Options Browser MIME type sniffing is disabled www.googleadservices.com, vars.hotjar.com, accounts.google.com X-Frame-Options Same Origin Do not allow this site to be rendered within an iframe www.bitmex.com, www.google.com, disqus.com
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).
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 Viewport meta tag HTML5 tag usually used for mobile optimization www.amazon.co.uk
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 External Styles defined within an external CSS file www.amazon.fr, www.paypal.com, www.linkedin.com CSS Media Query No description www.microsoft.com, www.20minutes.fr, www.arco.co.uk Embedded Styles defined within a webpage www.bbc.co.uk, www.amazon.com, www.amazon.ca