optics4kids.org Website Information
Daily Unique Visits: 1,217
Daily Page Views: 2,434
Income Per Day: $8
Estimated Value: $1,920
This website is located in United States and is using following IP address 65.202.222.221. See the complete list of popular websites hosted in United States.
optics4kids.org is registered under .ORG top-level domain. Please check other sites in .ORG zone.
Website optics4kids.org is using the following name servers:
- yogi2.osa.org
- yogi.osa.org
and is probably hosted by UUNET - MCI Communications Services, Inc. d/b/a Verizon Business, US. See the full list of other websites hosted by UUNET - MCI Communications Services, Inc. d/b/a Verizon Business, US.
The highest website optics4kids.org position in Alexa rank database was 29153 and the lowest rank position was 974679. Current position of optics4kids.org in Alexa rank database is 589210.
Desktop speed score of optics4kids.org (68/100) is better than the results of 47.59% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of optics4kids.org (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed score of optics4kids.org (67/100) is better than the results of 70.58% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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optics4kids.org Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
optics4kids.org whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Registry Domain ID: D34721489-LROR
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://www.networksolutions.com
Updated Date: 2021-05-25T14:36:55Z
Creation Date: 2000-09-15T21:08:25Z
Registry Expiry Date: 2022-09-15T21:08:24Z
Registrar Registration Expiration Date:
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: domain.operations@web.com
Registrar Abuse Contact Phone: +1.8777228662
Reseller:
Domain Status: ok https://icann.org/epp#ok
Registrant Organization: Optical Society of America
Registrant State/Province: DC
Registrant Country: US
Name Server: YOGI.OSA.ORG
Name Server: YOGI2.OSA.ORG
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2022-03-09T17:47:05Z
optics4kids.org server information
Servers Location
optics4kids.org desktop page speed rank
Last tested: 2019-11-08
optics4kids.org Desktop Speed Test Quick Summary
priority - 34Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 335.7KiB (84% reduction).
Compressing and resizing https://www.optics4kids.org/osa.o4k/media/optics4k…eader-alt.jpg?ext=.jpg could save 92.2KiB (88% reduction).
Compressing and resizing https://www.optics4kids.org/osa.o4k/media/optics4k…095x38010.jpg?ext=.jpg could save 58.6KiB (82% reduction).
Compressing and resizing https://www.optics4kids.org/osa.o4k/media/optics4k…ith-girls.jpg?ext=.jpg could save 45.4KiB (81% reduction).
Compressing and resizing https://www.optics4kids.org/osa.o4k/media/optics4k…on-header.jpg?ext=.jpg could save 44.8KiB (81% reduction).
priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.optics4kids.org/ScriptResource.axd?d=N…S41&t=ffffffffa580202a
https://www.optics4kids.org/ScriptResource.axd?d=d…pA1&t=ffffffffa580202a
Optimize CSS Delivery of the following:
https://www.optics4kids.org/osa.o4k/css/app.css?v=2
https://www.optics4kids.org/CMSPages/GetResource.ashx?_webparts=677
https://www.optics4kids.org/CMSPages/GetResource.ashx?_webpartlayouts=239
priority - 3Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://www.optics4kids.org/
https://www.optics4kids.org/home
priority - 1Leverage 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://www.optics4kids.org/osa.o4k/media/optics4k…4K-Logo-2018-alt_2.png (expiration not specified)
https://ssl.google-analytics.com/ga.js (2 hours)
priority - 0Minify 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 620B (14% reduction).
optics4kids.org Desktop Resource Breakdown
| Total Resources | 25 |
| Number of Hosts | 6 |
| Static Resources | 7 |
| JavaScript Resources | 6 |
| CSS Resources | 4 |
optics4kids.org mobile page speed rank
Last tested: 2019-01-17
optics4kids.org Mobile Speed Test Quick Summary
priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.optics4kids.org/ScriptResource.axd?d=N…jS6p8OEHl81&t=545ba255
https://www.optics4kids.org/ScriptResource.axd?d=d…Ckrs7JJj641&t=545ba255
Optimize CSS Delivery of the following:
https://www.optics4kids.org/osa.o4k/css/app.css?v=2
https://www.optics4kids.org/CMSPages/GetResource.ashx?_webparts=677
https://www.optics4kids.org/CMSPages/GetResource.ashx?_webpartlayouts=239
priority - 10Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://www.optics4kids.org/
https://www.optics4kids.org/home
priority - 7Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 67.8KiB (18% reduction).
Compressing https://www.optics4kids.org/osa.o4k/media/optics4k…rs-header.jpg?ext=.jpg could save 18.8KiB (17% reduction).
Compressing https://www.optics4kids.org/osa.o4k/media/optics4k…on-header.jpg?ext=.jpg could save 11.5KiB (21% reduction).
Compressing https://www.optics4kids.org/osa.o4k/media/optics4k…095x38010.jpg?ext=.jpg could save 9.8KiB (14% reduction).
Compressing https://www.optics4kids.org/osa.o4k/media/optics4k…ith-girls.jpg?ext=.jpg could save 8.5KiB (16% reduction).
priority - 2Leverage 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://www.optics4kids.org/osa.o4k/media/optics4k…4K-Logo-2018-alt_2.png (expiration not specified)
https://ssl.google-analytics.com/ga.js (2 hours)
priority - 0Minify 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 620B (14% reduction).
optics4kids.org Mobile Resource Breakdown
| Total Resources | 23 |
| Number of Hosts | 6 |
| Static Resources | 7 |
| JavaScript Resources | 6 |
| CSS Resources | 4 |
optics4kids.org mobile page usability
Last tested: 2019-01-17
optics4kids.org HTML validation
Errors
A document must not include more than one “meta” element with a “charset” attribute.
"...4wq8w" /> <meta charset="utf-8" /> <meta..."
Bad value “https://fonts.googleapis.com/css?family=Fredoka+One|Roboto:400,400i,700,700i” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
"...e=1.0" /> <link href="https://fonts.googleapis.com/css?family=Fredoka+One|Roboto:400,400i,700,700i" rel="stylesheet"> <link..."
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
"...sentText"><p>This w..." Line: 95 Column: 1 - 3
"...ore.</p> <p>By con..."
Attribute “alt” not allowed on element “a” at this point.
"..._item"> <a class="main-nav__link" href="/what-is-optics" alt="What is Optics?">What i..." Line: 110 Column: 3 - 74
"..._item"> <a class="main-nav__link" href="/classroom-activities" alt="Activities">Activi..." Line: 112 Column: 3 - 70
"..._item"> <a class="main-nav__link" href="/illusions" alt="Optical Illusions">Optica..." Line: 114 Column: 3 - 58
"..._item"> <a class="main-nav__link" href="/careers" alt="Careers">Career..." Line: 116 Column: 3 - 74
"..._item"> <a class="main-nav__link" href="/other-resources" alt="Other Resources">Other ..." Line: 118 Column: 3 - 74
"..._item"> <a class="main-nav__link" href="/ask-a-scientist" alt="Ask A Scientist">Ask A ..."
Attribute “alt” not allowed on element “span” at this point.
"...__button"><span class="fas fa-search" alt="Search"></span..."
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optics4kids.org Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
optics4kids.org TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.