chemguide.co.uk Website Information
Daily Unique Visits: 31,241
Daily Page Views: 187,446
Income Per Day: $375
Estimated Value: $270,000
This website is located in United Kingdom and is using following IP address 82.71.205.12. See the complete list of popular websites hosted in United Kingdom.
chemguide.co.uk is registered under .UK top-level domain. Please check other sites in .UK zone.
Website chemguide.co.uk is using the following name servers:
- ns0.zen.co.uk
- ns1.zen.co.uk
and is probably hosted by Zen Internet Ltd. See the full list of other websites hosted by Zen Internet Ltd.
The highest website chemguide.co.uk position in Alexa rank database was 44588 and the lowest rank position was 117112. Current position of chemguide.co.uk in Alexa rank database is 45908.
Desktop speed score of chemguide.co.uk (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 chemguide.co.uk (70/100) is better than the results of 21.03% of other sites and means that the page is not mobile-friendly.
Mobile speed score of chemguide.co.uk (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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chemguide.co.uk 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.
chemguide.co.uk 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:
chemguide.co.uk
Data validation:
Nominet was able to match the registrant's name and address against a 3rd party data source on 10-Dec-2012
Registrar:
Zen Internet Limited [Tag = ZENSYS]
URL: https://www.zen.co.uk
Relevant dates:
Registered on: 27-Apr-2000
Expiry date: 27-Apr-2026
Last updated: 14-Aug-2024
Registration status:
Registered until expiry date.
Name servers:
ns0.zen.co.uk 212.23.8.1
ns1.zen.co.uk 212.23.3.1
WHOIS lookup made at 04:13:38 11-Sep-2024
--
This WHOIS information is provided for free by Nominet UK the central registry
for .uk domain names. This information and the .uk WHOIS are:
Copyright Nominet UK 1996 - 2024.
You may not access the .uk WHOIS or use any data from it except as permitted
by the terms of use available in full at https://www.nominet.uk/whoisterms,
which includes restrictions on: (A) use of the data for advertising, or its
repackaging, recompilation, redistribution or reuse (B) obscuring, removing
or hiding any or all of this notice and (C) exceeding query rate or volume
limits. The data is provided on an 'as-is' basis and may lag behind the
register. Access may be withdrawn or restricted at any time.
chemguide.co.uk
Data validation:
Nominet was able to match the registrant's name and address against a 3rd party data source on 10-Dec-2012
Registrar:
Zen Internet Limited [Tag = ZENSYS]
URL: https://www.zen.co.uk
Relevant dates:
Registered on: 27-Apr-2000
Expiry date: 27-Apr-2026
Last updated: 14-Aug-2024
Registration status:
Registered until expiry date.
Name servers:
ns0.zen.co.uk 212.23.8.1
ns1.zen.co.uk 212.23.3.1
WHOIS lookup made at 04:13:38 11-Sep-2024
--
This WHOIS information is provided for free by Nominet UK the central registry
for .uk domain names. This information and the .uk WHOIS are:
Copyright Nominet UK 1996 - 2024.
You may not access the .uk WHOIS or use any data from it except as permitted
by the terms of use available in full at https://www.nominet.uk/whoisterms,
which includes restrictions on: (A) use of the data for advertising, or its
repackaging, recompilation, redistribution or reuse (B) obscuring, removing
or hiding any or all of this notice and (C) exceeding query rate or volume
limits. The data is provided on an 'as-is' basis and may lag behind the
register. Access may be withdrawn or restricted at any time.
chemguide.co.uk server information
Servers Location
chemguide.co.uk desktop page speed rank
Last tested: 2016-08-24
Desktop Speed
Good
99/100
chemguide.co.uk Desktop Speed Test Quick Summary
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 5.2KiB (70% reduction).
Compressing http://chemguide.co.uk/ could save 5.2KiB (70% reduction).
chemguide.co.uk Desktop Resource Breakdown
| Total Resources | 1 |
| Number of Hosts | 1 |
chemguide.co.uk mobile page speed rank
Last tested: 2019-12-09
Mobile Speed
Good
99/100
chemguide.co.uk Mobile Speed Test Quick Summary
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 5.2KiB (70% reduction).
Compressing http://chemguide.co.uk/ could save 5.2KiB (70% reduction).
chemguide.co.uk Mobile Resource Breakdown
| Total Resources | 1 |
| Number of Hosts | 1 |
chemguide.co.uk mobile page usability
Last tested: 2019-12-09
Mobile Usability
Medium
70/100
chemguide.co.uk 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.
CIE syllabus support and 1 others render only 5 pixels tall (13 CSS pixels).Covers simple…s free energy. and 15 others render only 5 pixels tall (13 CSS pixels).Support pages…and teachers. renders only 5 pixels tall (13 CSS pixels).Pearson's Edex…hemistry books and 13 others render only 5 pixels tall (13 CSS pixels).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.
priority - 3Size 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="atommenu.html#top">Atomic Structure and Bonding</a> and 10 others are close to other tap targets.chemguide.co.uk HTML validation
Errors
The character encoding was not declared. Proceeding using “windows-1252”.
Line: Column: -
"......"
"......"
Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
Line: 2 Column: 1 - 6
"... <html> <head..."
"... <html> <head..."
The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.
Line: 15 Column: 1 - 61
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
The “link” attribute on the “body” element is obsolete. Use CSS instead.
Line: 15 Column: 1 - 61
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
The “vlink” attribute on the “body” element is obsolete. Use CSS instead.
Line: 15 Column: 1 - 61
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
The “alink” attribute on the “body” element is obsolete. Use CSS instead.
Line: 15 Column: 1 - 61
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
"... </head> <body bgcolor="#ffffcc" link="blue" vlink="teal" alink="red"> <a na..."
The “center” element is obsolete. Use CSS instead.
Line: 17 Column: 1 - 8
"...top"></a> <center> <tabl..."
"...top"></a> <center> <tabl..."
The “align” attribute on the “table” element is obsolete. Use CSS instead.
Line: 18 Column: 1 - 62
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..." Line: 37 Column: 1 - 50
"...> </pre> <table align="center" cellpadding="10" border="1"> <t..."
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..." Line: 37 Column: 1 - 50
"...> </pre> <table align="center" cellpadding="10" border="1"> <t..."
The “width” attribute on the “table” element is obsolete. Use CSS instead.
Line: 18 Column: 1 - 62
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..."
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..."
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
Line: 18 Column: 1 - 62
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..."
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..."
The “border” attribute on the “table” element is obsolete. Use CSS instead.
Line: 18 Column: 1 - 62
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..." Line: 37 Column: 1 - 50
"...> </pre> <table align="center" cellpadding="10" border="1"> <t..."
"... <center> <table align="center" border="0" width="480" cellspacing="10"> <tr>..." Line: 37 Column: 1 - 50
"...> </pre> <table align="center" cellpadding="10" border="1"> <t..."
The “bgcolor” attribute on the “td” element is obsolete. Use CSS instead.
Line: 21 Column: 5 - 77
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
The “height” attribute on the “td” element is obsolete. Use CSS instead.
Line: 21 Column: 5 - 77
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Line: 21 Column: 5 - 77
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
Line: 21 Column: 5 - 77
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
The “font” element is obsolete. Use CSS instead.
Line: 22 Column: 1 - 55
"..."middle"> <font color="#006600" size="7" face="Helvetica, Arial"><b>che..." Line: 28 Column: 1 - 55
"...span="2"> <font color="#006600" size="6" face="Helvetica, Arial"><p ali..." Line: 30 Column: 1 - 55
"...></font> <font color="#000000" size="5" face="Helvetica, Arial"> <p al..." Line: 41 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 41 Column: 154 - 208
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">I have..." Line: 43 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 43 Column: 178 - 232
"...></td><td><font color="#ff0000" face="Helvetica, Arial" size="2"><b>Sup..." Line: 45 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 45 Column: 153 - 207
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 47 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 47 Column: 145 - 199
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Includ..." Line: 49 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 49 Column: 143 - 197
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 51 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 51 Column: 150 - 204
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Explai..." Line: 53 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 53 Column: 147 - 201
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Includ..." Line: 55 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 55 Column: 160 - 214
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 57 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 57 Column: 152 - 206
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 59 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 59 Column: 137 - 191
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Includ..." Line: 61 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 61 Column: 148 - 202
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">A sele..." Line: 63 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 63 Column: 143 - 197
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">A desc..." Line: 65 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 65 Column: 148 - 202
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Sugges..." Line: 67 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 67 Column: 146 - 200
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">For UK..." Line: 69 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 69 Column: 123 - 177
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">A rand..." Line: 71 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 71 Column: 176 - 230
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Suppor..." Line: 78 Column: 4 - 58
"...hr /> <p><font color="#000000" size="2" face="Helvetica, Arial"> ©..."
"..."middle"> <font color="#006600" size="7" face="Helvetica, Arial"><b>che..." Line: 28 Column: 1 - 55
"...span="2"> <font color="#006600" size="6" face="Helvetica, Arial"><p ali..." Line: 30 Column: 1 - 55
"...></font> <font color="#000000" size="5" face="Helvetica, Arial"> <p al..." Line: 41 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 41 Column: 154 - 208
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">I have..." Line: 43 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 43 Column: 178 - 232
"...></td><td><font color="#ff0000" face="Helvetica, Arial" size="2"><b>Sup..." Line: 45 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 45 Column: 153 - 207
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 47 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 47 Column: 145 - 199
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Includ..." Line: 49 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 49 Column: 143 - 197
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 51 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 51 Column: 150 - 204
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Explai..." Line: 53 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 53 Column: 147 - 201
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Includ..." Line: 55 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 55 Column: 160 - 214
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 57 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 57 Column: 152 - 206
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Covers..." Line: 59 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 59 Column: 137 - 191
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Includ..." Line: 61 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 61 Column: 148 - 202
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">A sele..." Line: 63 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 63 Column: 143 - 197
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">A desc..." Line: 65 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 65 Column: 148 - 202
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Sugges..." Line: 67 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 67 Column: 146 - 200
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">For UK..." Line: 69 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 69 Column: 123 - 177
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">A rand..." Line: 71 Column: 22 - 76
"..."top"><td><font color="#000000" face="Helvetica, Arial" size="2"><a hre..." Line: 71 Column: 176 - 230
"...></td><td><font color="#000000" face="Helvetica, Arial" size="2">Suppor..." Line: 78 Column: 4 - 58
"...hr /> <p><font color="#000000" size="2" face="Helvetica, Arial"> ©..."
Element “p” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)
Line: 28 Column: 56 - 73
"...a, Arial"><p align="center"><b>Hel..." Line: 31 Column: 1 - 18
"..., Arial"> <p align="center"><b>MAI..."
"...a, Arial"><p align="center"><b>Hel..." Line: 31 Column: 1 - 18
"..., Arial"> <p align="center"><b>MAI..."
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Line: 28 Column: 56 - 73
"...a, Arial"><p align="center"><b>Hel..." Line: 31 Column: 1 - 18
"..., Arial"> <p align="center"><b>MAI..."
"...a, Arial"><p align="center"><b>Hel..." Line: 31 Column: 1 - 18
"..., Arial"> <p align="center"><b>MAI..."
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
Line: 37 Column: 1 - 50
"...> </pre> <table align="center" cellpadding="10" border="1"> <t..."
"...> </pre> <table align="center" cellpadding="10" border="1"> <t..."
The “valign” attribute on the “tr” element is obsolete. Use CSS instead.
Line: 41 Column: 51 - 17
"...order="1"> <tr valign="top"><td><f..." Line: 43 Column: 375 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 45 Column: 335 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 47 Column: 496 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 49 Column: 541 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 51 Column: 579 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 53 Column: 382 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 55 Column: 311 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 57 Column: 371 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 59 Column: 306 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 61 Column: 285 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 63 Column: 462 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 65 Column: 299 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 67 Column: 376 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 69 Column: 370 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 71 Column: 342 - 17
"...</td></tr> <tr valign="top"><td><f..."
"...order="1"> <tr valign="top"><td><f..." Line: 43 Column: 375 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 45 Column: 335 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 47 Column: 496 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 49 Column: 541 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 51 Column: 579 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 53 Column: 382 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 55 Column: 311 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 57 Column: 371 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 59 Column: 306 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 61 Column: 285 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 63 Column: 462 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 65 Column: 299 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 67 Column: 376 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 69 Column: 370 - 17
"...</td></tr> <tr valign="top"><td><f..." Line: 71 Column: 342 - 17
"...</td></tr> <tr valign="top"><td><f..."
Table column 2 established by element “td” has no cells beginning in it.
Line: 21 Column: 5 - 77
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
"...10"> <tr> <td colspan="2" bgcolor="#ccffcc" height="50" align="center" valign="middle"> <font..."
Warnings
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Line: 16 Column: 1 - 14
"...nk="red"> <a name="top"></a> <..."
"...nk="red"> <a name="top"></a> <..."
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Line: 2 Column: 1 - 6
"... <html> <head..."
"... <html> <head..."
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chemguide.co.uk 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.
chemguide.co.uk 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.