microstrategy.com website information.
microstrategy.com domain name is registered by .COM top-level domain registry. See the other sites registred in .COM domain zone.
Following name servers are specified for microstrategy.com domain:
- a1-228.akam.net
- a4-66.akam.net
- a16-65.akam.net
- a7-67.akam.net
- a14-64.akam.net
- a11-67.akam.net
and probably website microstrategy.com is hosted by AS Eesti Meedia web hosting company. Check the complete list of other most popular websites hosted by AS Eesti Meedia hosting company.
According to Alexa traffic rank the highest website microstrategy.com position was 12274 (in the world). The lowest Alexa rank position was 15612. Now website microstrategy.com ranked in Alexa database as number 15368 (in the world).
Website microstrategy.com Desktop speed measurement score (68/100) is better than the results of 47.59% of other sites shows that the page desktop performance can be improved.
microstrategy.com Mobile usability score (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of microstrategy.com (49/100) is better than the results of 31.99% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
Date | Rank | Change |
---|---|---|
Jul-26-2025 | N/A | N/A |
Jul-25-2025 | 15,368 | 99 |
Jul-24-2025 | 15,467 | 124 |
Jul-23-2025 | 15,591 | -75 |
Jul-22-2025 | 15,516 | 64 |
Jul-21-2025 | 15,580 | -59 |
Jul-20-2025 | 15,521 | -78 |
Advertisement
microstrategy.com Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
microstrategy.com whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
Domain Name: MICROSTRATEGY.COM
Registry Domain ID: 2987777_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.corporatedomains.com
Registrar URL: http://cscdbs.com
Updated Date: 2024-03-05T03:43:25Z
Creation Date: 1996-03-07T05:00:00Z
Registry Expiry Date: 2025-03-08T05:00:00Z
Registrar: CSC Corporate Domains, Inc.
Registrar IANA ID: 299
Registrar Abuse Contact Email: domainabuse@cscglobal.com
Registrar Abuse Contact Phone: 8887802723
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: A1-228.AKAM.NET
Name Server: A11-67.AKAM.NET
Name Server: A14-64.AKAM.NET
Name Server: A16-65.AKAM.NET
Name Server: A4-66.AKAM.NET
Name Server: A7-67.AKAM.NET
DNSSEC: signedDelegation
DNSSEC DS Data: 3264 13 2 9CC7B6F27999A62BC6C0E8F8504C7712FB63E2F60B3EAE2A5B1A7AF99E45F31D
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-12T05:22:39Z
microstrategy.com server information
microstrategy.com desktop page speed rank
Last tested: 2019-12-09
microstrategy.com Desktop Speed Test Quick Summary
priority - 14 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://static.hotjar.com/c/hotjar-950964.js?sv=6 (60 seconds)
https://use.typekit.net/cjr2qkp.js (10 minutes)
https://www.google-analytics.com/gtm/js?id=GTM-WBZ…=1693913460.1575922956 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-WLQTSS (15 minutes)
https://connect.facebook.net/signals/config/155788…7327?v=2.9.14&r=stable (20 minutes)
https://bat.bing.com/bat.js (30 minutes)
https://fast.wistia.com/assets/external/E-v1.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://www.googleadservices.com/pagead/conversion_async.js (60 minutes)
https://js-agent.newrelic.com/nr-1153.min.js (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)
https://static.olark.com/jsclient-bucket2/application2.js?v=1575909225335 (3 hours)
https://static.olark.com/jsclient-bucket2/storage.js?v=1575909225335 (3 hours)
https://static.olark.com/jsclient/app.js (3 hours)
https://static.olark.com/jsclient/jquery.js (3 hours)
https://static.olark.com/jsclient/loader.js (3 hours)
https://static.olark.com/jsclient/styles/artsy-albatross/theme.css (3 hours)
https://sjs.bizographics.com/insight.min.js (3.8 hours)
https://cdn.cookielaw.org/consent/04c4eb0e-2aba-4201-81c4-43f4f75dc7d6.js (4 hours)
https://cdn.cookielaw.org/langswitch/86fec731-737b…3-8a1a-91e82a227852.js (4 hours)
https://cdn.cookielaw.org/skins/default_flat_botto…ack/v2/css/optanon.css (4 hours)
https://www.microstrategy.com/CMSTemplates/microst…23660000000/styles.css (8 hours)
https://www.microstrategy.com/CMSTemplates/microst…lize-css/normalize.css (12.6 hours)
https://www.microstrategy.com/CMSTemplates/microst…sel/slick/slick.min.js (13.2 hours)
https://www.microstrategy.com/CMSTemplates/microst…ery/dist/jquery.min.js (13.7 hours)
https://www.microstrategy.com/CMSTemplates/microst…0000000/scripts.min.js (14.1 hours)
https://www.microstrategy.com/CMSTemplates/microst….magnific-popup.min.js (19.2 hours)
https://www.microstrategy.com/CMSTemplates/microst…ookie/jquery.cookie.js (19.6 hours)
https://www.microstrategy.com/CMSTemplates/microst…ib/isInViewport.min.js (19.8 hours)
https://www.microstrategy.com/CMSTemplates/microst…gy/js/modernizr.min.js (23.2 hours)
https://www.microstrategy.com/Strategy/media/images/icons/microstrategy.ttf (4.9 days)
https://www.microstrategy.com/Strategy/media/image…ying-glass_reverse.svg (4.9 days)
priority - 12 Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://microstrategy.com/
https://www.microstrategy.com/
https://www.microstrategy.com/us
priority - 10 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 101.1KiB (22% reduction).
Compressing and resizing https://www.microstrategy.com/getmedia/5767ac67-6f…ory-services?width=200 could save 25.5KiB (82% reduction).
Compressing https://www.microstrategy.com/getmedia/9538e9f6-9d…_macbook-pro?width=800 could save 7.8KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/98a18a26-46…_MACBOOK-PRO?width=800 could save 7.5KiB (12% reduction).
Compressing and resizing https://www.microstrategy.com/getmedia/54fe85d7-ef…rson-profile?width=100 could save 7.2KiB (61% reduction).
Compressing and resizing https://www.microstrategy.com/getmedia/41fcf7e1-52…-case-number?width=100 could save 6.3KiB (60% reduction).
Compressing and resizing https://www.microstrategy.com/getmedia/ddf98df8-83…toys-company?width=100 could save 6.1KiB (60% reduction).
Compressing https://www.microstrategy.com/getmedia/0eb03735-81…metric_white?width=300 could save 4KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/8f554fa5-96…552bbafe/iphoneX-black could save 2.9KiB (19% reduction).
Compressing https://www.microstrategy.com/getmedia/37973911-76…metric_black?width=200 could save 2.8KiB (11% reduction).
Compressing https://www.microstrategy.com/getmedia/2b9bb02a-24…metric_white?width=300 could save 1.5KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/bf509375-79…a4/coca-cola?width=200 could save 1.3KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/395bb319-b6…81d/iphoneX-status-bar could save 874B (44% reduction).
Compressing https://www.microstrategy.com/getmedia/a23e00b0-89…art_iphone-x?width=100 could save 644B (12% reduction).
Compressing https://www.microstrategy.com/getmedia/95e36f6f-c7…orm_iphone-x?width=100 could save 635B (12% reduction).
priority - 10 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 5 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.microstrategy.com/CMSTemplates/microst…gy/js/modernizr.min.js
https://www.microstrategy.com/WebResource.axd?d=l-…1&t=636934741199995647
https://www.microstrategy.com/ScriptResource.axd?d…Vw1&t=ffffffffa580202a
https://www.microstrategy.com/ScriptResource.axd?d…lI0&t=ffffffffa580202a
Optimize CSS Delivery of the following:
https://www.microstrategy.com/CMSTemplates/microst…23660000000/styles.css
https://www.microstrategy.com/CMSPages/v-637103945…tylesheetname=homepage
priority - 1 Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 10KiB (66% reduction).
Compressing https://knrpc.olark.com/nrpc/c?c=create&s=6415-365…rostrategy.com%2Fus&r= could save 742B (55% reduction).
Compressing https://knrpc.olark.com/nrpc/p?j=olark-51575922968…rnd=0.8897678421344608 could save 262B (40% reduction).
priority - 0 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1.3KiB (20% reduction).
Minifying https://www.microstrategy.com/CMSTemplates/microst…ookie/jquery.cookie.js could save 563B (42% reduction) after compression.
Minifying https://munchkin.marketo.net/munchkin.js could save 148B (20% reduction) after compression.
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.2KiB (56% reduction).
microstrategy.com Desktop Resources
Total Resources | 142 |
Number of Hosts | 38 |
Static Resources | 97 |
JavaScript Resources | 47 |
CSS Resources | 5 |
microstrategy.com Desktop Resource Breakdown
microstrategy.com mobile page speed rank
Last tested: 2019-12-10
microstrategy.com Mobile Speed Test Quick Summary
priority - 43 Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://microstrategy.com/
https://www.microstrategy.com/
https://www.microstrategy.com/us
priority - 40 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 10 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.microstrategy.com/CMSTemplates/microst…gy/js/modernizr.min.js
https://www.microstrategy.com/WebResource.axd?d=l-…1&t=636934741199995647
https://www.microstrategy.com/ScriptResource.axd?d…Vw1&t=ffffffffa580202a
https://www.microstrategy.com/ScriptResource.axd?d…lI0&t=ffffffffa580202a
https://www.microstrategy.com/CMSTemplates/microst…sel/slick/slick.min.js
https://www.microstrategy.com/CMSTemplates/microst…ookie/jquery.cookie.js
https://www.microstrategy.com/CMSTemplates/microst…ib/isInViewport.min.js
https://www.microstrategy.com/CMSTemplates/microst….magnific-popup.min.js
https://www.microstrategy.com/CMSTemplates/microst…0000000/scripts.min.js
Optimize CSS Delivery of the following:
https://www.microstrategy.com/CMSTemplates/microst…23660000000/styles.css
https://www.microstrategy.com/CMSPages/v-637103945…tylesheetname=homepage
priority - 18 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://static.hotjar.com/c/hotjar-950964.js?sv=6 (60 seconds)
https://use.typekit.net/cjr2qkp.js (10 minutes)
https://www.google-analytics.com/gtm/js?id=GTM-WBZ…=1320515382.1575967570 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-WLQTSS (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/155788…7327?v=2.9.14&r=stable (20 minutes)
https://bat.bing.com/bat.js (30 minutes)
https://fast.wistia.com/assets/external/E-v1.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://www.googleadservices.com/pagead/conversion_async.js (60 minutes)
https://www.microstrategy.com/CMSTemplates/microst…ery/dist/jquery.min.js (104.1 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://static.olark.com/jsclient/app.js (3 hours)
https://static.olark.com/jsclient/loader.js (3 hours)
https://cdn.cookielaw.org/consent/04c4eb0e-2aba-4201-81c4-43f4f75dc7d6.js (4 hours)
https://cdn.cookielaw.org/langswitch/86fec731-737b…3-8a1a-91e82a227852.js (4 hours)
https://cdn.cookielaw.org/skins/default_flat_botto…ack/v2/css/optanon.css (4 hours)
https://www.microstrategy.com/CMSTemplates/microst…sel/slick/slick.min.js (7.2 hours)
https://www.microstrategy.com/CMSTemplates/microst…lize-css/normalize.css (7.3 hours)
https://www.microstrategy.com/CMSTemplates/microst…ib/isInViewport.min.js (10.2 hours)
https://www.microstrategy.com/CMSTemplates/microst…gy/js/modernizr.min.js (10.5 hours)
https://www.microstrategy.com/CMSTemplates/microst….magnific-popup.min.js (11.8 hours)
https://www.microstrategy.com/CMSTemplates/microst…ookie/jquery.cookie.js (12.2 hours)
https://www.microstrategy.com/CMSTemplates/microst…0000000/scripts.min.js (16.8 hours)
https://www.microstrategy.com/CMSTemplates/microst…23660000000/styles.css (21.9 hours)
https://www.microstrategy.com/Strategy/media/image…ying-glass_reverse.svg (4.8 days)
https://www.microstrategy.com/Strategy/media/images/icons/microstrategy.ttf (5 days)
priority - 8 Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
priority - 6 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 55.9KiB (14% reduction).
Compressing https://www.microstrategy.com/getmedia/9538e9f6-9d…_macbook-pro?width=800 could save 7.8KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/98a18a26-46…_MACBOOK-PRO?width=800 could save 7.5KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/0eb03735-81…metric_white?width=300 could save 4KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/8f554fa5-96…552bbafe/iphoneX-black could save 2.9KiB (19% reduction).
Compressing https://www.microstrategy.com/getmedia/37973911-76…metric_black?width=200 could save 2.8KiB (11% reduction).
Compressing https://www.microstrategy.com/getmedia/2b9bb02a-24…metric_white?width=300 could save 1.5KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/bf509375-79…a4/coca-cola?width=200 could save 1.3KiB (12% reduction).
Compressing https://www.microstrategy.com/getmedia/395bb319-b6…81d/iphoneX-status-bar could save 874B (44% reduction).
Compressing https://www.microstrategy.com/getmedia/a23e00b0-89…art_iphone-x?width=100 could save 644B (12% reduction).
Compressing https://www.microstrategy.com/getmedia/95e36f6f-c7…orm_iphone-x?width=100 could save 635B (12% reduction).
priority - 1 Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 9.7KiB (67% reduction).
Compressing https://knrpc.olark.com/nrpc/c?c=create&s=6415-365…rostrategy.com%2Fus&r= could save 739B (55% reduction).
priority - 0 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1.3KiB (20% reduction).
Minifying https://www.microstrategy.com/CMSTemplates/microst…ookie/jquery.cookie.js could save 563B (42% reduction) after compression.
Minifying https://munchkin.marketo.net/munchkin.js could save 148B (20% reduction) after compression.
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.2KiB (56% reduction).
microstrategy.com Mobile Resources
Total Resources | 127 |
Number of Hosts | 34 |
Static Resources | 93 |
JavaScript Resources | 36 |
CSS Resources | 4 |
microstrategy.com Mobile Resource Breakdown
microstrategy.com mobile page usability
Last tested: 2019-12-10
microstrategy.com Mobile Usability Test Quick Summary
priority - 0 Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
<div class="slick-list draggable"></div>
is close to 1 other tap targets.microstrategy.com similar domains
www.microstrategy.net
www.microstrategy.org
www.microstrategy.info
www.microstrategy.biz
www.microstrategy.us
www.microstrategy.mobi
www.icrostrategy.com
www.microstrategy.com
www.nicrostrategy.com
www.mnicrostrategy.com
www.nmicrostrategy.com
www.jicrostrategy.com
www.mjicrostrategy.com
www.jmicrostrategy.com
www.kicrostrategy.com
www.mkicrostrategy.com
www.kmicrostrategy.com
www.mcrostrategy.com
www.mucrostrategy.com
www.miucrostrategy.com
www.muicrostrategy.com
www.mjcrostrategy.com
www.mijcrostrategy.com
www.mkcrostrategy.com
www.mikcrostrategy.com
www.mocrostrategy.com
www.miocrostrategy.com
www.moicrostrategy.com
www.mirostrategy.com
www.mixrostrategy.com
www.micxrostrategy.com
www.mixcrostrategy.com
www.midrostrategy.com
www.micdrostrategy.com
www.midcrostrategy.com
www.mifrostrategy.com
www.micfrostrategy.com
www.mifcrostrategy.com
www.mivrostrategy.com
www.micvrostrategy.com
www.mivcrostrategy.com
www.micostrategy.com
www.miceostrategy.com
www.micreostrategy.com
www.micerostrategy.com
www.micdostrategy.com
www.micrdostrategy.com
www.micfostrategy.com
www.micrfostrategy.com
www.mictostrategy.com
www.micrtostrategy.com
www.mictrostrategy.com
www.micrstrategy.com
www.micristrategy.com
www.microistrategy.com
www.micriostrategy.com
www.micrkstrategy.com
www.microkstrategy.com
www.micrkostrategy.com
www.micrlstrategy.com
www.microlstrategy.com
www.micrlostrategy.com
www.micrpstrategy.com
www.micropstrategy.com
www.micrpostrategy.com
www.microtrategy.com
www.microwtrategy.com
www.microswtrategy.com
www.microwstrategy.com
www.microetrategy.com
www.microsetrategy.com
www.microestrategy.com
www.microdtrategy.com
www.microsdtrategy.com
www.microdstrategy.com
www.microztrategy.com
www.microsztrategy.com
www.microzstrategy.com
www.microxtrategy.com
www.microsxtrategy.com
www.microxstrategy.com
www.microatrategy.com
www.microsatrategy.com
www.microastrategy.com
www.microsrategy.com
www.microsrrategy.com
www.microstrrategy.com
www.microsrtrategy.com
www.microsfrategy.com
www.microstfrategy.com
www.microsftrategy.com
www.microsgrategy.com
www.microstgrategy.com
www.microsgtrategy.com
www.microsyrategy.com
www.microstyrategy.com
www.microsytrategy.com
www.microstategy.com
www.microsteategy.com
www.microstreategy.com
www.microsterategy.com
www.microstdategy.com
www.microstrdategy.com
www.microstdrategy.com
www.microstfategy.com
www.microstrfategy.com
www.microsttategy.com
www.microstrtategy.com
www.microsttrategy.com
www.microstrtegy.com
www.microstrqtegy.com
www.microstraqtegy.com
www.microstrqategy.com
www.microstrwtegy.com
www.microstrawtegy.com
www.microstrwategy.com
www.microstrstegy.com
www.microstrastegy.com
www.microstrsategy.com
www.microstrztegy.com
www.microstraztegy.com
www.microstrzategy.com
www.microstraegy.com
www.microstraregy.com
www.microstratregy.com
www.microstrartegy.com
www.microstrafegy.com
www.microstratfegy.com
www.microstraftegy.com
www.microstragegy.com
www.microstratgegy.com
www.microstragtegy.com
www.microstrayegy.com
www.microstratyegy.com
www.microstraytegy.com
www.microstratgy.com
www.microstratwgy.com
www.microstratewgy.com
www.microstratwegy.com
www.microstratsgy.com
www.microstratesgy.com
www.microstratsegy.com
www.microstratdgy.com
www.microstratedgy.com
www.microstratdegy.com
www.microstratrgy.com
www.microstratergy.com
www.microstratey.com
www.microstratefy.com
www.microstrategfy.com
www.microstratefgy.com
www.microstratevy.com
www.microstrategvy.com
www.microstratevgy.com
www.microstratety.com
www.microstrategty.com
www.microstratetgy.com
www.microstrateby.com
www.microstrategby.com
www.microstratebgy.com
www.microstrateyy.com
www.microstrategyy.com
www.microstrateygy.com
www.microstratehy.com
www.microstrateghy.com
www.microstratehgy.com
www.microstrateg.com
www.microstrategt.com
www.microstrategyt.com
www.microstrategg.com
www.microstrategyg.com
www.microstrateggy.com
www.microstrategh.com
www.microstrategyh.com
www.microstrategu.com
www.microstrategyu.com
www.microstrateguy.com
www.microstrategy.con
microstrategy.com Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
microstrategy.com TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.