FREECOMPUTERBOOKS.COM Free Computer, Programming, Mathematics, Technical Books, Lecture Notes and Tutorials

freecomputerbooks.com Website Information

Daily Unique Visits: 19,070

Daily Page Views: 114,420

Income Per Day: $229

Estimated Value: $164,880

This website is located in United States and is using following IP address 74.50.48.246. See the complete list of popular websites hosted in United States.

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

Website freecomputerbooks.com is using the following name servers:

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and is probably hosted by AS17378 - TIERPOINT PENNSYLVANIA TWO LLC, US. See the full list of other websites hosted by AS17378 - TIERPOINT PENNSYLVANIA TWO LLC, US.

The highest website freecomputerbooks.com position in Alexa rank database was 74392 and the lowest rank position was 160876. Current position of freecomputerbooks.com in Alexa rank database is 75207.

Desktop speed score of freecomputerbooks.com (65/100) is better than the results of 42.84% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of freecomputerbooks.com (63/100) is better than the results of 9.16% of other sites and means that the page is not mobile-friendly.

Mobile speed score of freecomputerbooks.com (53/100) is better than the results of 39.51% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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freecomputerbooks.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.


freecomputerbooks.com whois

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Domain Name: FREECOMPUTERBOOKS.COM
Registry Domain ID: 37071564_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.enom.com
Registrar URL: http://www.enomdomains.com
Updated Date: 2023-01-06T21:06:03Z
Creation Date: 2000-10-01T04:00:21Z
Registry Expiry Date: 2028-10-01T04:00:21Z
Registrar: eNom, LLC
Registrar IANA ID: 48
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: ok https://icann.org/epp#ok
Name Server: NS1.RIMUHOSTING.COM
Name Server: NS2.RIMUHOSTING.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-20T17:12:13Z

freecomputerbooks.com server information

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freecomputerbooks.com desktop page speed rank

Last tested: 2016-11-14


Desktop Speed Medium
65/100

freecomputerbooks.com Desktop Speed Test Quick Summary


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freecomputerbooks.com Desktop Resource Breakdown

Total Resources128
Number of Hosts37
Static Resources60
JavaScript Resources37
CSS Resources1

freecomputerbooks.com mobile page speed rank

Last tested: 2016-11-14


Mobile Speed Bad
53/100

freecomputerbooks.com Mobile Speed Test Quick Summary


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freecomputerbooks.com Mobile Resource Breakdown

Total Resources153
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freecomputerbooks.com mobile page usability

Last tested: 2016-11-14


Mobile Usability Bad
63/100

freecomputerbooks.com Mobile Usability Test Quick Summary


priority - 35Use legible font sizes

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priority - 15Size tap targets appropriately

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priority - 10Configure the viewport

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freecomputerbooks.com HTML validation

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Line: 2 Column: 1 - 58
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."

Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.

Line: 7 Column: 1 - 54
"...="UTF-8"> <meta http-equiv="Cache-Control" content="no-cache" /> <meta..."

Bad value “Pragma” for attribute “http-equiv” on element “meta”.

Line: 8 Column: 1 - 47
"...cache" /> <meta http-equiv="Pragma" content="no-cache" /> <meta..."

Bad value “Expires” for attribute “http-equiv” on element “meta”.

Line: 9 Column: 1 - 41
"...cache" /> <meta http-equiv="Expires" content="0" /> <!--<..."

Stray end tag “meta”.

Line: 14 Column: 34 - 40
"...ent="100"></meta> <meta..." Line: 15 Column: 42 - 48
"...tent="10"></meta> <meta..." Line: 16 Column: 37 - 43
"...tent="10"></meta> <meta..." Line: 17 Column: 53 - 59
"..., follow"></meta> <meta..." Line: 18 Column: 59 - 65
"... 13, ATF"></meta> <meta..." Line: 19 Column: 39 - 45
"...="2 days"></meta> <meta..." Line: 20 Column: 45 - 51
"...="2 days"></meta> <meta..." Line: 21 Column: 284 - 290
"...engines."></meta> <!-- ..."

A numeric character reference expanded to the C1 controls range.

Line: 15 Column: - 26
"...="pagerank&#153;" content="10"..."

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

Line: 63 Column: 103 - 138
"...="_blank"><img src="/tradepub/468x60_Eb.gif"/></a> ..." Line: 198 Column: 1 - 64
"...li> <div> <img src="covers/Support-Vector-Machines-Succinctly_43x55.png"/> <a hr..." Line: 210 Column: 1 - 86
"...li> <div> <img src="covers/Android-Developer-Fundamentals-Course-Practical-Workbook_43x55.jpg"/> <a hr..." Line: 222 Column: 1 - 71
"...li> <div> <img src="covers/Discrete-Mathematics-An-Open-Introduction_43x55.jpg"/> <a hr..." Line: 234 Column: 1 - 68
"...li> <div> <img src="covers/Reinforcement-Learning-An-Introduction_43x55.jpg"/> <a hr..." Line: 246 Column: 1 - 60
"...li> <div> <img src="covers/Mapping-and-the-Citizen-Sensor_43x55.jpg"/> <a hr..." Line: 258 Column: 1 - 75
"...li> <div> <img src="covers/Application-of-Geographic-Information-Systems_43x55.jpg"/> <a hr..." Line: 270 Column: 1 - 58
"...li> <div> <img src="covers/A-Course-in-Machine-Learning_43x55.jpg"/> <a hr..." Line: 282 Column: 1 - 58
"...li> <div> <img src="covers/Introduction-to-Data-Science_43x55.jpg"/> <a hr..." Line: 294 Column: 1 - 73
"...li> <div> <img src="covers/Statistical-Foundations-of-Machine-Learning_43x55.jpg"/> <a hr..." Line: 331 Column: 91 - 146
"...Twitter!"><img src="/images/follow_me_on_twitter.png" border="0"/></a> <..." Line: 336 Column: 24 - 59
"...incatImg"><img src="/images/arrowbullet.png"/></td> ..." Line: 342 Column: 24 - 59
"...incatImg"><img src="/images/arrowbullet.png"/></td> ..." Line: 348 Column: 24 - 59
"...incatImg"><img src="/images/arrowbullet.png"/><..." Line: 362 Column: 24 - 59
"...incatImg"><img src="/images/arrowbullet.png"/></td> ..." Line: 368 Column: 24 - 59
"...incatImg"><img src="/images/arrowbullet.png"/></td> ..." Line: 371 Column: - 227
"......" Line: 376 Column: 24 - 59
"...incatImg"><img src="/images/arrowbullet.png"/></td> ..." Line: 382 Column: 24 - 59
"...incatImg"><img src="/images/arrowbullet.png"/></td> ..." Line: 444 Column: 222 - 261
"... Computing<img src="/images/cool.gif" border="0"/></a></..."

Duplicate attribute “id”.

Line: 91 Column: - 43
"...ame="search" id="searchForm" o..."

Stray end tag “input”.

Line: 97 Column: 35 - 42
"... name="q"></input> <!-..."

Duplicate attribute “style”.

Line: 108 Column: - 139
"...ing:0px;" style="border: 1px s..."

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

Line: 111 Column: 126 - 260
"...145px;" /><input type="image" class="bottom-right" style="padding:0px; margin-bottom:0px;" align="bottom" src="/images/search.png" alt="Search"/> </fo..."

Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.

Line: 200 Column: 1 - 4
"...czyk)</a> <p/> <span..." Line: 212 Column: 1 - 4
"...kbook</a> <p/> <span..." Line: 224 Column: 1 - 4
"...evin)</a> <p/> <..." Line: 236 Column: 1 - 4
"...raft)</a> <p/> <span..." Line: 248 Column: 1 - 4
"...t al)</a> <p/> <span..." Line: 260 Column: 1 - 4
"...(GIS)</a> <p/> <span..." Line: 272 Column: 1 - 4
"... III)</a> <p/> <span..." Line: 284 Column: 1 - 4
"...nton)</a> <p/> <span..." Line: 296 Column: 1 - 4
"...empi)</a> <p/> <span..." Line: 391 Column: 1 - 41
".../a></div> <div id="Languages" class="subcatagory"/> </td>..." Line: 398 Column: 1 - 47
".../a></div> <div id="ComputerScience" class="subcatagory"/> </td>..." Line: 405 Column: 1 - 40
".../a></div> <div id="Database" class="subcatagory"/> </td>..." Line: 412 Column: 1 - 34
".../a></div> <div id="EE" class="subcatagory"/> </td>..." Line: 419 Column: 1 - 36
".../a></div> <div id="Java" class="subcatagory"/></td> ..." Line: 425 Column: 1 - 36
".../a></div> <div id="Unix" class="subcatagory"/></td> ..." Line: 431 Column: 1 - 36
".../a></div> <div id="Math" class="subcatagory"/> </td>..." Line: 438 Column: 1 - 41
".../a></div> <div id="Microsoft" class="subcatagory"/> </td>..." Line: 445 Column: 1 - 38
".../a></div> <div id="Mobile" class="subcatagory"/> </td>..." Line: 452 Column: 1 - 39
".../a></div> <div id="Network" class="subcatagory"/> </td>..." Line: 459 Column: 1 - 40
".../a></div> <div id="Software" class="subcatagory"/> </td>..." Line: 466 Column: 1 - 39
".../a></div> <div id="Special" class="subcatagory"/> </td>..." Line: 473 Column: 1 - 35
".../a></div> <div id="Web" class="subcatagory"/> </td>..."

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

Line: 305 Column: 1 - 23
"...v> </li> <style type="text/css">div.TP..."

Row 5 of a row group established by a “tbody” element has no cells beginning on it.

Line: 361 Column: 9 - 4
"...> </tr>--> <tr> <td c..."

End tag “td” seen, but there were open elements.

Line: 392 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 399 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 406 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 413 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 419 Column: 37 - 41
"...atagory"/></td> </tr>..." Line: 425 Column: 37 - 41
"...atagory"/></td> </tr>..." Line: 432 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 439 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 446 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 453 Column: 1 - 5
"...tagory"/> </td>..." Line: 460 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 467 Column: 1 - 5
"...tagory"/> </td> </tr>..." Line: 474 Column: 1 - 5
"...tagory"/> </td> </tr>..."

Unclosed element “div”.

Line: 391 Column: 1 - 41
".../a></div> <div id="Languages" class="subcatagory"/> </td>..." Line: 398 Column: 1 - 47
".../a></div> <div id="ComputerScience" class="subcatagory"/> </td>..." Line: 405 Column: 1 - 40
".../a></div> <div id="Database" class="subcatagory"/> </td>..." Line: 412 Column: 1 - 34
".../a></div> <div id="EE" class="subcatagory"/> </td>..." Line: 419 Column: 1 - 36
".../a></div> <div id="Java" class="subcatagory"/></td> ..." Line: 425 Column: 1 - 36
".../a></div> <div id="Unix" class="subcatagory"/></td> ..." Line: 431 Column: 1 - 36
".../a></div> <div id="Math" class="subcatagory"/> </td>..." Line: 438 Column: 1 - 41
".../a></div> <div id="Microsoft" class="subcatagory"/> </td>..." Line: 445 Column: 1 - 38
".../a></div> <div id="Mobile" class="subcatagory"/> </td>..." Line: 452 Column: 1 - 39
".../a></div> <div id="Network" class="subcatagory"/> </td>..." Line: 459 Column: 1 - 40
".../a></div> <div id="Software" class="subcatagory"/> </td>..." Line: 466 Column: 1 - 39
".../a></div> <div id="Special" class="subcatagory"/> </td>..." Line: 473 Column: 1 - 35
".../a></div> <div id="Web" class="subcatagory"/> </td>..."

Duplicate ID “mNCC”.

Line: 497 Column: 1 - 40
"...Content"> <script id="mNCC" language="javascript"> medi..."

Duplicate ID “mNSC”.

Line: 497 Column: 130 - 230
".../script> <script id="mNSC" src="http://contextual.media.net/nmedianet.js?cid=8CU44QE36" language="javascript"></scri..."

Warnings

The “language” attribute on the “script” element is obsolete. You can safely omit it.

Line: 165 Column: 1 - 131
"...</script> <script language="javascript" src="http://cts.tradepub.com/cts4/?ptnr=computerbooks&tm=w_cnd04vt&cat=Inet&type=all&key=&trk="></script> <..." Line: 307 Column: 1 - 150
"...</style> <script language="javascript" src="http://cts.tradepub.com/cts4/?ptnr=freecomputerbooks&tm=p_cnd02fcb&hicat=827&type=wp&key=&trk=&mode=jukebox"></script> </..." Line: 316 Column: 1 - 40
"...ottomAd"> <script id="mNCC" language="javascript"> medi..." Line: 316 Column: 129 - 229
".../script> <script id="mNSC" src="http://contextual.media.net/nmedianet.js?cid=8CU44QE36" language="javascript"></scri..." Line: 497 Column: 1 - 40
"...Content"> <script id="mNCC" language="javascript"> medi..." Line: 497 Column: 130 - 230
".../script> <script id="mNSC" src="http://contextual.media.net/nmedianet.js?cid=8CU44QE36" language="javascript"></scri..."

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

Line: 331 Column: 91 - 146
"...Twitter!"><img src="/images/follow_me_on_twitter.png" border="0"/></a> <..." Line: 371 Column: - 227
"......" Line: 444 Column: 222 - 261
"... Computing<img src="/images/cool.gif" border="0"/></a></..."

A table row was 0 columns wide, which is less than the column count established by the first row (2).

Line: 361 Column: 9 - 4
"...> </tr>--> <tr> <td c..."

The first occurrence of ID “mNCC” was here.

Line: 316 Column: 1 - 40
"...ottomAd"> <script id="mNCC" language="javascript"> medi..."

The first occurrence of ID “mNSC” was here.

Line: 316 Column: 129 - 229
".../script> <script id="mNSC" src="http://contextual.media.net/nmedianet.js?cid=8CU44QE36" language="javascript"></scri..."

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freecomputerbooks.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.


freecomputerbooks.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.