norvig.com Website Information

Daily Unique Visits: 83,799

Daily Page Views: 502,794

Income Per Day: $1,006

Estimated Value: $724,320

This website is located in United States and is using following IP address 158.106.138.13. See the complete list of popular websites hosted in United States.

norvig.com is registered under .COM top-level domain. Please check other sites in .COM zone.

Website norvig.com is using the following name servers:

cp3.privatesystems.net
cp4.privatesystems.net
cp2.privatesystems.net
cp1.privatesystems.net

and is probably hosted by PRIVATESYSTEMS - PrivateSystems Networks, US. See the full list of other websites hosted by PRIVATESYSTEMS - PrivateSystems Networks, US.

The highest website norvig.com position in Alexa rank database was 16823 and the lowest rank position was 992496. Current position of norvig.com in Alexa rank database is 17115.

Desktop speed score of norvig.com (97/100) is better than the results of 95.04% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of norvig.com (59/100) is better than the results of 2.69% of other sites and means that the page is not mobile-friendly.

Mobile speed score of norvig.com (97/100) is better than the results of 95.14% of other sites and shows that the landing page performance on mobile devices is excellent.

norvig.com 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.

norvig.com 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.

Domain Name: NORVIG.COM
Registry Domain ID: 133202_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://networksolutions.com
Updated Date: 2021-05-02T20:46:20Z
Creation Date: 1997-01-01T05:00:00Z
Registry Expiry Date: 2026-12-31T05:00:00Z
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8003337680
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: CP1.PRIVATESYSTEMS.NET
Name Server: CP2.PRIVATESYSTEMS.NET
Name Server: CP3.PRIVATESYSTEMS.NET
Name Server: CP4.PRIVATESYSTEMS.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2021-05-04T13:45:43Z

norvig.com server information

Servers Location

norvig.com desktop page speed rank

Last tested: 2016-12-08

Desktop Speed Good

97/100

norvig.com Desktop Speed Test Quick Summary

priority - 1Optimize images

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

Optimize the following images to reduce their size by 10.6KiB (78% reduction).

Compressing and resizing https://www.gstatic.com/images/branding/googlelogo…ogo_color_284x96dp.png could save 10.6KiB (78% reduction).

priority - 1Enable 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 7.1KiB (63% reduction).

Compressing http://norvig.com/ could save 7.1KiB (63% reduction).

priority - 0Leverage 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://norvig.com/rss.jpeg (4 hours)

norvig.com Desktop Resource Breakdown

Total Resources	6
Number of Hosts	5
Static Resources	4
JavaScript Resources	1

norvig.com mobile page speed rank

Last tested: 2016-12-08

Mobile Speed Good

97/100

norvig.com Mobile Speed Test Quick Summary

priority - 1Optimize images

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

Optimize the following images to reduce their size by 10.6KiB (78% reduction).

Compressing and resizing https://www.gstatic.com/images/branding/googlelogo…ogo_color_284x96dp.png could save 10.6KiB (78% reduction).

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:

http://norvig.com/rss.jpeg (4 hours)

priority - 1Enable 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 7.1KiB (63% reduction).

Compressing http://norvig.com/ could save 7.1KiB (63% reduction).

norvig.com Mobile Resource Breakdown

Total Resources	6
Number of Hosts	5
Static Resources	4
JavaScript Resources	1

norvig.com mobile page usability

Last tested: 2016-12-08

Mobile Usability Bad

59/100

norvig.com Mobile Usability Test Quick Summary

priority - 38Use 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.

This site cont…Peter Norvig. and 8 others render only 6 pixels tall (16 CSS pixels).

Other Programm…Presentations and 19 others render only 6 pixels tall (16 CSS pixels).

(unit test / e…ar to doctest) and 132 others render only 6 pixels tall (16 CSS pixels).

Lisp: Where Do…Are We Going? and 90 others render only 6 pixels tall (16 CSS pixels).

Me elsewhere on the web and 7 others render only 6 pixels tall (16 CSS pixels).

Amazon and 3 others render only 4 pixels tall (10 CSS pixels).

Gilligan's Island and 2 others render only 6 pixels tall (16 CSS pixels).

: and 6 others render only 6 pixels tall (16 CSS pixels).

priority - 25Size 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="ipython/README.html">List of Jupyte…thon notebooks</a> and 90 others are close to other tap targets.

The tap target <a href="http://aima.cs.berkeley.edu">AI: A Modern Approach</a> and 6 others are close to other tap targets.

The tap target <a href="http://www.ama…IN/0136042597/">Amazon</a> and 3 others are close to other tap targets.

The tap target <a href="http://www.mcs…administration">Gilligan's Isl…Administration</a> and 2 others are close to other tap targets.

The tap target <input type="submit" name="sa"> is close to 1 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.

norvig.com HTML validation

Errors

Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.

Line: 1 Column: 1 - 6
"...<head><TITLE..."

The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.

Line: 5 Column: 1 - 22
"...> </head> <BODY bgcolor=#ffffff> <lin..."

A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.

Line: 6 Column: 1 - 58
"...#ffffff> <link rel="icon" href="favicon.ico" type="image/x-icon" /> <link..." Line: 7 Column: 1 - 67
"...-icon" /> <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" /> <ta..."

The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.

Line: 10 Column: 1 - 35
"...con" /> <table cellpadding=0 cellspacing=2> <tr><..." Line: 20 Column: 1 - 101
"...le> <p> <table cellspacing=0 cellpadding=0 border=2 width="100%" bordercolorlight=blue bordercolordark=blue> <tr>..." Line: 24 Column: 1 - 57
"...lign=top> <table cellpadding=2 cellspacing=0 border=0 width="100%"> <tr>..." Line: 99 Column: 1 - 57
"...lign=top> <table cellpadding=2 cellspacing=0 border=0 width="100%"> <tr>..."

The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.

The “width” attribute on the “td” element is obsolete. Use CSS instead.

Line: 11 Column: 5 - 20
"...ng=2> <tr><td width="50%"> <font..." Line: 13 Column: 1 - 16
"....com</h1> <td width="50%"><i>Thi..." Line: 23 Column: 5 - 27
"...lue> <tr> <td width="50%" valign=top> <tabl..." Line: 98 Column: 1 - 27
"...</table> <td width="50%" valign=top> <tabl..."

The “font” element is obsolete. Use CSS instead.

Line: 12 Column: 1 - 17
"...th="50%"> <font color=blue><h1>Pe..." Line: 27 Column: 3 - 41
"...tr><td> # <font style="BACKGROUND-COLOR: yellow"><b>NEW..." Line: 56 Column: 62 - 77
"...6042597/"><font size="-2">Amazon..." Line: 59 Column: 61 - 76
"...58601910"><font size="-2">Amazon..." Line: 62 Column: 63 - 78
"...37073954"><font size="-2">Amazon..." Line: 64 Column: 63 - 78
"...92366417"><font size="-2">Amazon..."

Element “h1” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)

Line: 12 Column: 18 - 21
"...olor=blue><h1>Peter@..."

A table cell was implicitly closed, but there were open elements.

Line: 13 Column: 1 - 16
"....com</h1> <td width="50%"><i>Thi..." Line: 16 Column: 1 - 8
"....0 Feed"> </table> <p>..." Line: 110 Column: 5 - 8
"...</a> <br><tr><td al..." Line: 149 Column: 67 - 70
"...nce Essays<tr><td> #..."

Unclosed element “font”.

Line: 12 Column: 1 - 17
"...th="50%"> <font color=blue><h1>Pe..."

Unclosed element “a”.

Line: 15 Column: 1 - 23
"...rvig.</i> <a href="rss-feed.xml"><img s..."

Element “table” not allowed as child of element “p” in this context. (Suppressing further errors from this subtree.)

Line: 20 Column: 1 - 101
"...le> <p> <table cellspacing=0 cellpadding=0 border=2 width="100%" bordercolorlight=blue bordercolordark=blue> <tr>..."

The “width” attribute on the “table” element is obsolete. Use CSS instead.

Line: 20 Column: 1 - 101
"...le> <p> <table cellspacing=0 cellpadding=0 border=2 width="100%" bordercolorlight=blue bordercolordark=blue> <tr>..." Line: 24 Column: 1 - 57
"...lign=top> <table cellpadding=2 cellspacing=0 border=0 width="100%"> <tr>..." Line: 99 Column: 1 - 57
"...lign=top> <table cellpadding=2 cellspacing=0 border=0 width="100%"> <tr>..." Line: 162 Column: 1 - 20
"...m/custom> <table width="100%"><tr> <..."

The “border” attribute on the “table” element is obsolete. Use CSS instead.

The “valign” attribute on the “td” element is obsolete. Use CSS instead.

Line: 23 Column: 5 - 27
"...lue> <tr> <td width="50%" valign=top> <tabl..." Line: 98 Column: 1 - 27
"...</table> <td width="50%" valign=top> <tabl..."

The “align” attribute on the “td” element is obsolete. Use CSS instead.

Line: 26 Column: 5 - 36
"...0%"> <tr><td align=center bgcolor=6495ed><b>NEW..." Line: 36 Column: 5 - 36
".... <tr><td align=center bgcolor=6495ed><b>Top..." Line: 52 Column: 5 - 36
".../a> <tr><td align=center bgcolor=6495ed><b>Art..." Line: 66 Column: 5 - 36
"...</a> <tr><td align=center bgcolor=6495ed><b>Fre..." Line: 83 Column: 5 - 36
"...de) <tr><td align=center bgcolor=6495ed><b>Hum..." Line: 101 Column: 5 - 36
"...0%"> <tr><td align=center bgcolor=6495ed><b>Con..." Line: 110 Column: 9 - 40
"... <br><tr><td align=center bgcolor=6495ed><b>Jav..." Line: 130 Column: 5 - 36
"...hon) <tr><td align=center bgcolor=6495ed><b>Oth..." Line: 143 Column: 5 - 36
"...le) <tr><td align=center bgcolor=6495ed><b>NAS..." Line: 149 Column: 5 - 36
"...ion) <tr><td align=center bgcolor=6495ed><b>Non..." Line: 170 Column: 1 - 17
"...s on</a>) <td align=center> <form..." Line: 181 Column: 1 - 16
".../script> <td align=right><i>A <..."

The “bgcolor” attribute on the “td” element is obsolete. Use CSS instead.

The “align” attribute on the “img” element is obsolete. Use CSS instead.

Line: 103 Column: 58 - 200
"...ogle.com"><img align=absmiddle alt="Google" src="https://www.gstatic.com/images/branding/googlelogo/2x/googlelogo_color_284x96dp.png" height=32 border=0></a> <..."

Unclosed element “b”.

Line: 102 Column: 1 - 3
"...><tr><td> <b>Peter ..." Line: 149 Column: 37 - 39
"...or=6495ed><b>Non-Co..."

End tag “i” violates nesting rules.

Line: 164 Column: 70 - 73
"...norvig.com</i></a> <..."

No “a” element in scope but a “a” end tag seen.

Line: 164 Column: 74 - 77
"...ig.com</i></a> <br><..."

Saw a “form” start tag, but there was already an active “form” element. Nested forms are not allowed. Ignoring the tag.

Line: 171 Column: 1 - 61
"...n=center> <form action="http://www.google.com/cse" id="cse-search-box"> <di..."

Stray end tag “form”.

Line: 178 Column: 1 - 7
"... </div> </form> <scri..." Line: 186 Column: 1 - 7
"...></table> </FORM> <br>..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 184 Column: 3 - 85
"...posts"> <img src="http://ssl.gstatic.com/images/icons/gplus-16.png" width="16" height="16"> </a><..."

End tag for “html” seen, but there were unclosed elements.

Line: 190 Column: 1 - 7
"...<br> <hr> </html> ..."

Unclosed element “form”.

Line: 161 Column: 1 - 53
"...able> <p> <FORM method=GET action=http://www.google.com/custom> <tabl..."

Warnings

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 103 Column: 58 - 200
"...ogle.com"><img align=absmiddle alt="Google" src="https://www.gstatic.com/images/branding/googlelogo/2x/googlelogo_color_284x96dp.png" height=32 border=0></a> <..."

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Line: 1 Column: 1 - 6
"...<head><TITLE..."

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norvig.com 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.

norvig.com 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.

NORVIG.COM Peter Norvig

norvig.com Website Information

Advertisement

norvig.com Alexa Rank

norvig.com whois

norvig.com server information

Servers Location

norvig.com desktop page speed rank

norvig.com Desktop Speed Test Quick Summary

priority - 1Optimize images

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

Optimize the following images to reduce their size by 10.6KiB (78% reduction).

priority - 1Enable 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 7.1KiB (63% reduction).

priority - 0Leverage 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:

norvig.com Desktop Resource Breakdown

norvig.com mobile page speed rank

norvig.com Mobile Speed Test Quick Summary

priority - 1Optimize images

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

Optimize the following images to reduce their size by 10.6KiB (78% reduction).

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:

priority - 1Enable 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 7.1KiB (63% reduction).

norvig.com Mobile Resource Breakdown

norvig.com mobile page usability

norvig.com Mobile Usability Test Quick Summary

priority - 38Use 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.

priority - 25Size 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.

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.

norvig.com HTML validation

Errors

Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.

The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.

The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.

The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.

The “width” attribute on the “td” element is obsolete. Use CSS instead.

The “font” element is obsolete. Use CSS instead.

Element “h1” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)

A table cell was implicitly closed, but there were open elements.

Unclosed element “font”.

Unclosed element “a”.

Element “table” not allowed as child of element “p” in this context. (Suppressing further errors from this subtree.)

The “width” attribute on the “table” element is obsolete. Use CSS instead.

The “border” attribute on the “table” element is obsolete. Use CSS instead.

The “valign” attribute on the “td” element is obsolete. Use CSS instead.

The “align” attribute on the “td” element is obsolete. Use CSS instead.

The “bgcolor” attribute on the “td” element is obsolete. Use CSS instead.

The “align” attribute on the “img” element is obsolete. Use CSS instead.

Unclosed element “b”.

End tag “i” violates nesting rules.

No “a” element in scope but a “a” end tag seen.

Saw a “form” start tag, but there was already an active “form” element. Nested forms are not allowed. Ignoring the tag.

Stray end tag “form”.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

End tag for “html” seen, but there were unclosed elements.

Unclosed element “form”.

Warnings

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

norvig.com similar domains

norvig.com Ping

norvig.com TRACEROUTE