CALTECH.EDU Home | Caltech


caltech.edu website information.

caltech.edu website servers are located in United States and are responding from following IP address 52.26.125.194. Check the full list of most visited websites located in United States.

caltech.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 caltech.edu domain:

  • tepid.ni.caltech.edu
  • tybalt.caltech.edu
  • nsx.lbl.gov
  • ns5.capnet.state.tx.us
  • mercutio.ni.caltech.edu
  • ns11.tex-an.net

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

According to Alexa traffic rank the highest website caltech.edu position was 2317 (in the world). The lowest Alexa rank position was 33031. Now website caltech.edu ranked in Alexa database as number 10060 (in the world).

Website caltech.edu Desktop speed measurement score (58/100) is better than the results of 30.6% of other sites shows that the page desktop performance can be improved.

caltech.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 caltech.edu (53/100) is better than the results of 37.88% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Oct-16-2019 10,060-705
Oct-15-2019 9,3557,947
Oct-14-2019 17,302-3,126
Oct-13-2019 14,176-3,689
Oct-12-2019 10,487-1,862
Oct-11-2019 8,6256,956
Oct-10-2019 15,581-8,494

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caltech.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.


caltech.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: CALTECH.EDU

Registrant:
California Institute of Technology
Information Management Systems and Services MS 1-10
1200 East California Boulevard
Pasadena, CA 91125
UNITED STATES

Administrative Contact:

Network Operations Center
California Institute of Technology
1200 E. California Blvd.
MS 1-10
Pasadena, CA 91125
UNITED STATES
(626) 395-3500
noc@caltech.edu

Technical Contact:

Network Operations Center
California Institute of Technology
1200 E. California Blvd.
MS 1-10
Pasadena, CA 91125
UNITED STATES
(626) 395-3500
noc@caltech.edu

Name Servers:
MERCUTIO.NI.CALTECH.EDU 131.215.254.99
NSX.LBL.GOV
TYBALT.CALTECH.EDU 131.215.139.100
TEPID.NI.CALTECH.EDU 131.215.254.100
NS5.CAPNET.STATE.TX.US
NS11.TEX-AN.NET

Domain record activated: 06-Jan-1986
Domain record last updated: 24-Nov-2010
Domain expires: 31-Jul-2016

caltech.edu server information

Servers Location

caltech.edu desktop page speed rank

Last tested: 2016-06-13


Desktop Speed Bad
58/100

caltech.edu Desktop Speed Test Quick Summary


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caltech.edu Desktop Resources

Total Resources96
Number of Hosts11
Static Resources65
JavaScript Resources22
CSS Resources23

caltech.edu Desktop Resource Breakdown

caltech.edu mobile page speed rank

Last tested: 2016-06-13


Mobile Speed Bad
53/100

caltech.edu Mobile Speed Test Quick Summary


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priority - 32 Eliminate render-blocking JavaScript and CSS in above-the-fold content

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http://www.caltech.edu/sites/all/libraries/jquery.…e2.swipe.min.js?o8klu7
http://www.caltech.edu/sites/all/libraries/jquery.…le2.tile.min.js?o8klu7
http://www.caltech.edu/sites/all/modules/custom/ca…js/frontpage.js?o8klu7
http://www.caltech.edu/sites/all/themes/caltech_mt…zr-2.6.1.min.js?o8klu7
http://www.caltech.edu/sites/all/themes/caltech_mt…derscore-min.js?o8klu7
http://www.caltech.edu/sites/all/themes/caltech_mt…/caltech_mte.js?o8klu7

Optimize CSS Delivery of the following:

http://www.caltech.edu/modules/system/system.base.css?o8klu7
http://www.caltech.edu/modules/system/system.menus.css?o8klu7
http://www.caltech.edu/modules/system/system.messages.css?o8klu7
http://www.caltech.edu/modules/system/system.theme.css?o8klu7
http://www.caltech.edu/sites/all/modules/calendar/…ar_multiday.css?o8klu7
http://www.caltech.edu/sites/all/modules/date/date_api/date.css?o8klu7
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http://www.caltech.edu/modules/field/theme/field.css?o8klu7
http://www.caltech.edu/sites/all/modules/custom/ma…er_calendar.css?o8klu7
http://www.caltech.edu/modules/node/node.css?o8klu7
http://www.caltech.edu/modules/search/search.css?o8klu7
http://www.caltech.edu/modules/user/user.css?o8klu7
http://www.caltech.edu/sites/all/modules/views/css/views.css?o8klu7
http://www.caltech.edu/sites/all/libraries/colorbo…e2/colorbox.css?o8klu7
http://www.caltech.edu/sites/all/modules/ctools/css/ctools.css?o8klu7
http://www.caltech.edu/sites/all/modules/panels/css/panels.css?o8klu7
http://www.caltech.edu/sites/all/modules/ds/layout…col/ds_2col.css?o8klu7
http://www.caltech.edu/sites/all/modules/custom/ca…tech_banner.css?o8klu7
http://www.caltech.edu/sites/all/themes/caltech_mte/css/style.css?o8klu7
http://www.caltech.edu/sites/all/themes/caltech_mt…caltech_mte.css?o8klu7
http://www.caltech.edu/sites/all/themes/caltech_mt…h_mte_print.css?o8klu7
http://www.caltech.edu/sites/all/modules/custom/ca…s/frontpage.css?o8klu7

priority - 20 Optimize images

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

Optimize the following images to reduce their size by 194KiB (31% reduction).

Losslessly compressing http://s3-us-west-1.amazonaws.com/www-prod-storage…x300.png?itok=mpXl_vRD could save 113.8KiB (25% reduction).
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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:

http://s3-us-west-1.amazonaws.com/www-prod-storage…du/Nobel-Laureates.png (expiration not specified)
http://s3-us-west-1.amazonaws.com/www-prod-storage…/Visiting-Scholars.png (expiration not specified)
https://pbs.twimg.com/profile_images/723820061039824897/uqsJ0mXk_normal.jpg (expiration not specified)
https://s3-us-west-1.amazonaws.com/www-prod-storag….edu/instagram_rev.png (expiration not specified)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
http://www.google-analytics.com/analytics.js (2 hours)

priority - 4 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 35.9KiB (14% reduction).

Minifying http://m.caltech.edu/sites/all/themes/caltech_mte/…caltech_mte.css?o8klu7 could save 19.1KiB (12% reduction).
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priority - 3 Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

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Minifying http://m.caltech.edu/misc/drupal.js?o8klu7 could save 11KiB (67% reduction).
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caltech.edu Mobile Resources

Total Resources144
Number of Hosts12
Static Resources63
JavaScript Resources22
CSS Resources23

caltech.edu Mobile Resource Breakdown

caltech.edu mobile page usability

Last tested: 2016-06-13


Mobile Usability Good
99/100

caltech.edu 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.

The tap target <a href="http://directory.caltech.edu/">DIRECTORY</a> and 3 others are close to other tap targets.

The tap target <input id="caltech-banner-search-keys" type="text" name="keys" class="search-textfield form-text"> is close to 1 other tap targets.

The tap target <a href="http://www.cal…-officer-50973" class="read-more-link">&gt;</a> and 3 others are close to other tap targets.

The tap target <a href="http://www.twitter.com/Caltech" class="twitter-link">Caltech @Caltech</a> is close to 1 other tap targets.

caltech.edu Mobile Resources

Total Resources144
Number of Hosts12
Static Resources63
JavaScript Resources22
CSS Resources23

caltech.edu Mobile Resource Breakdown

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caltech.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.


caltech.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.