|Site title||Online Banking, Mortgages, Personal Loans, Investing | Citi.com|
|Description||Open a bank account, apply for a personal loan or home equity line of credit, or start investing in your financial future with Citi. Learn more about our range of services.|
|Date first seen||June 1997|
|Netcraft Risk Rating||0/10|
|Netblock Owner||Akamai Technologies|
|IP address||18.104.22.168 (VirusTotal)|
|IPv6 address||Not Present|
|Organisation||CitiBank, N.A., New York, 10013, US|
|Hosting company||Akamai Technologies|
|Top Level Domain||Commercial entities (.com)|
|DNS Security Extensions||unknown|
|0.0.0.0-255.255.255.255||N/A||IANA-BLK||The whole IPv4 address space|
|↳ 22.214.171.124-126.96.36.199||Netherlands||92-RIPE||RIPE Network Coordination Centre|
|↳ 188.8.131.52-184.108.40.206||European Union||EU-AKAMAI-20071113|
|↳ 220.127.116.11-18.104.22.168||European Union||AKAMAI-PA||Akamai Technologies|
|↳ 22.214.171.124||European Union||AKAMAI-PA||Akamai Technologies|
|Organisational unit||Web Hosting Group|
|Subject Alternative Name||www.citi.com, icg.citi.com, www.citibank.com, www.citigroup.com, www.citiretailservices.com, www.finance.com, creditcards.citi.com, www.creditcards.citi.com, www1.citibank.com, www2.citibank.com, oncampus.citi.com, www.citibank.co.uk, ccsi.citi.com, prod.report.nacustomerexperience.citi.com|
|Validity period||From Oct 17 2019 to Jan 1 2022 (26 months, 2 weeks, 1 day)|
|Public key algorithm||rsaEncryption|
|Public key length||2048|
|Perfect Forward Secrecy||Yes|
|Next Protocol Negotiation||http/1.1,http/1.0|
|Supported TLS Extensions||RFC5746 renegotiation info, RFC4366 server name, RFC4492 EC point formats, RFC5077 session ticket, RFC4366 status request, Next Protocol Negotiation|
|Issuing organisation||DigiCert Inc|
|Issuer common name||DigiCert SHA2 Extended Validation Server CA|
|Issuer location||Not Present|
|Issuer state||Not Present|
|Certificate Revocation Lists||
|Public Key Hash||5a274f8e2127158259b65a09ec6e048bc953fdb21265be7cec099ebc9eb4807d|
|OCSP servers||http://ocsp.digicert.com - 100% uptime in the past 24 hours
|OCSP stapling response||Certificate valid|
|OCSP data generated||Apr 7 08:27:15 2020 GMT|
|OCSP data expires||Apr 14 07:42:15 2020 GMT|
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||DigiCert SHA2 Extended Validation Server CA|
|Validity period||From 2013-10-22 to 2028-10-22|
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.
Warning: It appears that this host does not have an SPF record. There may be an SPF record on citibank.com: 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 citibank.com: Check the site report.
Site Technology (fetched 18 days ago)
Includes all the main technologies that Netcraft detects as running on the server such as PHP.
Technology Description Popular sites using this technology Apache Jakarta Java software collection provided by the Apache Software Foundation www.cplusplus.com, www.bankofamerica.com, www.legifrance.gouv.fr Java Servlet A server-side Java programming language class www.aliexpress.com, www.lastampa.it, www.glassdoor.com SSL A cryptographic protocol providing communication security over the Internet
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.
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 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, www.paypal.com, login.microsoftonline.com Content Security Policy Detect and mitigate attacks in the browser opus.analytics.yahoo.com, dtm.advertising.com, discordapp.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
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
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).