DUKE.EDU Duke University


duke.edu website information.

duke.edu website servers are located in United States and are responding from following IP address 152.3.72.197. Check the full list of most visited websites located in United States.

duke.edu domain name is registered by .EDU top-level domain registry. See the other sites registred in .EDU domain zone.

Following name servers are specified for duke.edu domain:

  • dns-nc1-01.oit.duke.edu
  • dns-auth-01.oit.duke.edu
  • dns-auth-02.oit.duke.edu

and probably website duke.edu is hosted by duke.edu web hosting company. Check the complete list of other most popular websites hosted by duke.edu hosting company.

According to Alexa traffic rank the highest website duke.edu position was 1958 (in the world). The lowest Alexa rank position was 11429. Now website duke.edu ranked in Alexa database as number 7132 (in the world).

Website duke.edu Desktop speed measurement score (43/100) is better than the results of 13.07% of other sites shows that the page desktop performance can be improved.

duke.edu Mobile usability score (99/100) is better than the results of 87.11% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of duke.edu (61/100) is better than the results of 57.07% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Aug-26-2019 N/AN/A
Aug-25-2019 7,132-1,780
Aug-24-2019 5,3522,108
Aug-23-2019 7,460-8
Aug-22-2019 7,452-1,024
Aug-21-2019 6,428534
Aug-20-2019 6,9621,688

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duke.edu 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.


duke.edu 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.


This Registry database contains ONLY .EDU domains.
The data in the EDUCAUSE Whois database is provided
by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.

The EDUCAUSE Whois database is authoritative for the
.EDU domain.

A Web interface for the .EDU EDUCAUSE Whois Server is
available at: http://whois.educause.net

By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail. The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.

You may use "%" as a wildcard in your search. For further
information regarding the use of this WHOIS server, please
type: help

--------------------------

Domain Name: DUKE.EDU

Registrant:
Duke University
334 Blackwell St.
Suite 2111
Durham, NC 27701
UNITED STATES

Administrative Contact:
Domain Name Administrator
Duke University Hostmaster
Duke University
334 Blackwell St.
Suite 2106
Durham, NC 27701
UNITED STATES
(919) 684-2200
help-oit@win.duke.edu

Technical Contact:
Domain Name Administrator
Duke University Hostmaster
Duke University
334 Blackwell St.
Suite 2106
Durham, NC 27701
UNITED STATES
(919) 684-2200
help-oit@win.duke.edu

Name Servers:
DNS-AUTH-01.OIT.DUKE.EDU 152.3.103.93
DNS-AUTH-02.OIT.DUKE.EDU 152.3.105.232
AVALLONE.STANFORD.EDU

Domain record activated: 02-Jun-1986
Domain record last updated: 05-Sep-2014
Domain expires: 31-Jul-2015

duke.edu server information

Servers Location

duke.edu desktop page speed rank

Last tested: 2017-05-24


Desktop Speed Bad
43/100

duke.edu Desktop Speed Test Quick Summary


priority - 132 Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1.3MiB (83% reduction).

Compressing and resizing https://scontent.cdninstagram.com/t51.2885-15/e35/…2499409137631232_n.jpg could save 718KiB (97% reduction).
Compressing https://duke.edu/assets/img/resized/dukeeduwestcam…r-q100-m1483473740.jpg could save 370.9KiB (64% reduction).
Compressing and resizing https://scontent.cdninstagram.com/t51.2885-15/e35/…0119236204298240_n.jpg could save 82.1KiB (85% reduction).
Compressing and resizing https://scontent.cdninstagram.com/t51.2885-15/s750…2653692003811328_n.jpg could save 63KiB (88% reduction).
Compressing and resizing https://scontent.cdninstagram.com/t51.2885-15/e35/…0643302191988736_n.jpg could save 56.3KiB (81% reduction).

priority - 8 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Approximately 63% 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://alertbar.oit.duke.edu/alert.html

Optimize CSS Delivery of the following:

https://duke.edu/_themes/duke/css/duke.css?v=1495676747

priority - 3 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://alertbar.oit.duke.edu/alert.html (expiration not specified)
https://i1.ytimg.com/vi/1Kzl-j-utz0/mqdefault.jpg (2 hours)
https://i1.ytimg.com/vi/5A6m46AaS68/mqdefault.jpg (2 hours)
https://i1.ytimg.com/vi/9eQs6yC-OLk/sddefault.jpg (2 hours)
https://i1.ytimg.com/vi/mkPH1DbBU4g/mqdefault.jpg (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 2 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.

Only about 63% of the final above-the-fold content could be rendered with the full HTML response.

duke.edu Desktop Resources

Total Resources33
Number of Hosts5
Static Resources28
JavaScript Resources3
CSS Resources2

duke.edu Desktop Resource Breakdown

duke.edu mobile page speed rank

Last tested: 2017-05-24


Mobile Speed Bad
61/100

duke.edu Mobile Speed Test Quick Summary


priority - 65 Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 632.7KiB (85% reduction).

Compressing https://scontent.cdninstagram.com/t51.2885-15/e35/…2499409137631232_n.jpg could save 632.7KiB (85% reduction).

priority - 4 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://alertbar.oit.duke.edu/alert.html (expiration not specified)
https://i1.ytimg.com/vi/1Kzl-j-utz0/mqdefault.jpg (2 hours)
https://i1.ytimg.com/vi/5A6m46AaS68/mqdefault.jpg (2 hours)
https://i1.ytimg.com/vi/9eQs6yC-OLk/sddefault.jpg (2 hours)
https://i1.ytimg.com/vi/mkPH1DbBU4g/mqdefault.jpg (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)

duke.edu Mobile Resources

Total Resources26
Number of Hosts5
Static Resources21
JavaScript Resources3
CSS Resources2

duke.edu Mobile Resource Breakdown

duke.edu mobile page usability

Last tested: 2017-05-24


Mobile Usability Good
99/100

duke.edu Mobile Usability Test Quick Summary


priority - 1 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.

The tap target <a href="http://admissions.duke.edu">Admissions</a> and 2 others are close to other tap targets.

The tap target <a href="http://dukehealth.org/">Duke Health</a> and 8 others are close to other tap targets.

The tap target <a href="https://twitter.com/DukeU">@DukeU</a> and 2 others are close to other tap targets.

duke.edu Mobile Resources

Total Resources26
Number of Hosts5
Static Resources21
JavaScript Resources3
CSS Resources2

duke.edu Mobile Resource Breakdown

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duke.edu 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.


duke.edu 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.