numbertheory.org Website Information
Daily Unique Visits: 4,178
Daily Page Views: 16,712
Income Per Day: $47
Estimated Value: $25,380
This website is located in United States and is using following IP address 158.255.213.42. See the complete list of popular websites hosted in United States.
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Website numbertheory.org is using the following name servers:
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The highest website numbertheory.org position in Alexa rank database was 49788 and the lowest rank position was 999311. Current position of numbertheory.org in Alexa rank database is 300400.
Desktop speed score of numbertheory.org (99/100) is better than the results of 97.03% of other sites and shows that the page is performing great on desktop computers.
Mobile usability score of numbertheory.org (65/100) is better than the results of 13.11% of other sites and means that the page is not mobile-friendly.
Mobile speed score of numbertheory.org (99/100) is better than the results of 96.95% of other sites and shows that the landing page performance on mobile devices is excellent.
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numbertheory.org Alexa Rank
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numbertheory.org whois
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Registry Domain ID: D3655955-LROR
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://www.networksolutions.com
Updated Date: 2021-12-17T09:21:20Z
Creation Date: 1999-02-15T05:00:00Z
Registry Expiry Date: 2023-02-15T05:00:00Z
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: NumberTheory.ORG
Registrant State/Province: ACT
Registrant Country: AU
Name Server: NS95.WORLDNIC.COM
Name Server: NS96.WORLDNIC.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2022-02-10T00:33:37Z
numbertheory.org server information
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numbertheory.org desktop page speed rank
Last tested: 2015-09-16
numbertheory.org Desktop Speed Test Quick Summary
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:
numbertheory.org Desktop Resource Breakdown
| Total Resources | 2 |
| Number of Hosts | 2 |
| Static Resources | 1 |
numbertheory.org mobile page speed rank
Last tested: 2019-06-27
numbertheory.org Mobile Speed Test Quick Summary
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:
numbertheory.org Mobile Resource Breakdown
| Total Resources | 2 |
| Number of Hosts | 1 |
| Static Resources | 1 |
numbertheory.org mobile page usability
Last tested: 2019-06-27
numbertheory.org Mobile Usability Test Quick Summary
priority - 31Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
School of Math…cs and Physics and 4 others render only 5 pixels tall (14 CSS pixels).Number theoris…ental listings and 4 others render only 5 pixels tall (14 CSS pixels).mirror site is…e, Rome, Italy and 5 others render only 5 pixels tall (14 CSS pixels).Suggestions fo…elcome. Email: and 5 others render only 5 pixels tall (14 CSS pixels).webmaster@numbertheory.org and 1 others render only 5 pixels tall (14 CSS pixels).Last modified 10th April 2019 renders only 5 pixels tall (14 CSS pixels).priority - 14Size 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.
<a href="http://www.num…/ntw/aims.html">Aims</a> and 4 others are close to other tap targets.<a href="http://ricerca…web_italy.html">Italian</a> and 2 others are close to other tap targets.<a href="http://www.num…org/keith.html">Keith Matthews</a> is close to 2 other tap targets.priority - 10Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
numbertheory.org HTML validation
Errors
Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
"...<html> <head..."
Element “head” is missing a required instance of child element “title”.
"...></a> --> <a type="application/rss+xml" href="http://www.numbertheory.org/ntw/ntw.xml">RSS <i..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
"....xml">RSS <img src="/gifs/feed-icon-16.gif" border="0"></a> ..."
Element “title” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
"..."0"></a> <title> NUMBE..."
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
"...B</title> <STYLE TYPE="text/css"> <!-- ..."
Stray end tag “head”.
"... </STYLE> </head> <body..."
Start tag “body” seen but an element of the same type was already open.
"...> </head> <body bgcolor="FFFFCC"> </hea..."
Cannot recover after last error. Any further errors will be ignored.
"...> </head> <body bgcolor="FFFFCC"> </hea..."
Warnings
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
"....xml">RSS <img src="/gifs/feed-icon-16.gif" border="0"></a> ..."
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numbertheory.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.
numbertheory.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.