Periodicvideos.com The Periodic Table of Videos - University of Nottingham

Short videos about every element on the periodic table, plus other cool experiments and chemistry stuff

Periodicvideos.com Overview

Periodicvideos.com is a website that provides educational videos on every element of the periodic table as well as other interesting chemistry experiments. The website is titled "The Periodic Table of Videos" and is maintained by the University of Nottingham. The website is family-friendly and is aimed at students, teachers, and anyone interested in chemistry. The website is hosted by UK-2 Limited Hosting, a UK-based web hosting company that provides reliable web hosting services to businesses and individuals worldwide.

The website has unique visitor traffic of approximately 480 users per day, with 1200 pageviews. The estimated value of the site is $11,680 US dollars. The website has a Top-Level Domain .COM which is commonly used for commercial sites. The SSL Certificate is issued by cPanel, Inc., which provides SSL certifications for web hosting companies.

The website has a PageSpeed Insight score of 46, which is considered a moderate score. PageSpeed Insights is a tool provided by Google that analyzes web pages and provides recommendations for improving loading times. Although the score is not high, this may be due to the nature of the website. In particular, videos on the website may take additional time to load.

The website has a clear structure and is easy to navigate. The home page includes a menu bar at the top of the page, which provides links to different sections of the website such as "The Elements," "Experiments," "Periodic Table," "Games," and "Shop." The website is primarily divided into two categories: "The Elements" and "Experiments." The "The Elements" section provides videos on each of the elements of the periodic table, where each video provides interesting facts and trivia about the element. The section on "Experiments" includes videos on various experiments that at times have a comical element.

In conclusion, Periodicvideos.com is an educational website that provides informative videos on every element of the periodic table. The website is family-friendly, and the structure of the site is easy to navigate. Although the PageSpeed Insights score is not very high, this may be due to the nature of the website.

Periodicvideos.com Rank Summary

Global Rank

559,689

Average Load Time

0.84sec

Links In Count

1,115

Website Value

$11,692

Audience Geography. Where are periodicvideos.com visitors located?

Country	Visitors
United States US	63.4%
Other	36.6%

Country	Pageviews
United States US	68.5%
Other	31.4%

Country	Rank
United States US	136577

Where do visitors go on periodicvideos.com?

Subdomain	Pageviews
periodicvideos.com	100%

Subdomain	Pageviews per User
periodicvideos.com	2.6

Subdomain	Reach
periodicvideos.com	100%

How popular is periodicvideos.com?

Period	Global Rank	Global Rank Delta
past 3 months	559689	-22197
past month	473388	-316915
past week	324190	-49446
yesterday	646848	44561

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	616752	-120334	5	30%	2.5	30%
30	515521	-493223	7	170%	2.6	50%
7	312309	-94527	14	40%	3.4	30%
1	620938	-56016	5	-3.39%	2	9%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	570607	19658	77	-2.78%
30	489748	-257366	97	80%
7	368324	-30916	15	10%
1	671773	46883	8	-11.43%

Periodicvideos.com Website Safety

Overview

Last Updated: 12/26/2024

Overall result - periodicvideos.com is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/28/2024

periodicvideos.com is safe.

Norton ConnectSafe evaluates periodicvideos.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 11/28/2016

periodicvideos.com is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

periodicvideos.com is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/27/2021

periodicvideos.com is safe.

McAfee assesses periodicvideos.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze periodicvideos.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

periodicvideos.com child safety is very good.

The WOT calculates reputation of the periodicvideos.com. This reputation system receives ratings from users and information from third-party sources, assesses the periodicvideos.com for safety features and confirms, whether periodicvideos.com is suitable for children.

SSL Information

SSL Checker Tool

Domain	*.stackstaging.com
Issuer Organization	DigiCert Inc
Issuer	RapidSSL TLS RSA CA G1
Algorithm	RSA-SHA256
Valid form	07/16/2024
Expiration	08/13/2025
Signed	Certificate is not self signed
Additional Domains	*.stackstaging.com stackstaging.com

Periodicvideos.com Rank History

Alexa Rank shows how popular periodicvideos.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If periodicvideos.com has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to periodicvideos.com and pageviews on periodicvideos.com over the past 3 months.

Periodicvideos.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 48254

ASN Title: 20i Limited

Last Update: 10/27/2024

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.

% Information related to 'AS47104 - AS52223'

as-block: AS47104 - AS52223
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2018-11-22T15:27:34Z
last-modified: 2018-11-22T15:27:34Z
source: RIPE

% Information related to 'AS48254'

% Abuse contact for 'AS48254' is 'abuse@20i.com'

aut-num: AS48254
as-name: TWENTYI
org: ORG-LA982-RIPE
import: from AS3223 accept ANY
export: to AS3223 announce AS48254
import: from AS3356 accept ANY
export: to AS3356 announce AS48254
admin-c: LC11803-RIPE
tech-c: LC11803-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: MNT-20i
created: 2018-09-20T09:30:00Z
last-modified: 2018-09-21T07:07:13Z
source: RIPE

organisation: ORG-LA982-RIPE
org-name: 20i Limited
org-type: LIR
address: Laurel House
address: NG21 0HJ
address: Mansfield
address: UNITED KINGDOM
phone: +443333442720
admin-c: LC11803-RIPE
tech-c: LC11803-RIPE
abuse-c: AR36293-RIPE
mnt-ref: MNT-20i
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: MNT-20i
created: 2016-05-03T11:35:51Z
last-modified: 2018-09-19T13:36:39Z
source: RIPE # Filtered

person: Lloyd Cobb
address: 20i Limited
address: Laurel House
address: Mansfield
address: NG21 0HJ
address: UNITED KINGDOM
phone: +443333442720
nic-hdl: LC11803-RIPE
mnt-by: MNT-20i
created: 2016-05-03T11:35:50Z
last-modified: 2018-09-21T09:16:22Z
source: RIPE

% This query was served by the RIPE Database Query Service version 1.92.6 (HEREFORD)

Periodicvideos.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: PERIODICVIDEOS.COM
Registry Domain ID: 1486026859_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.tucows.com
Registrar URL: http://www.tucows.com
Updated Date: 2023-06-07T10:28:58Z
Creation Date: 2008-06-03T20:39:18Z
Registry Expiry Date: 2025-06-03T20:39:18Z
Registrar: Tucows Domains Inc.
Registrar IANA ID: 69
Registrar Abuse Contact Email: domainabuse@tucows.com
Registrar Abuse Contact Phone: +1.4165350123
Domain Status: ok https://icann.org/epp#ok
Name Server: DNS1.UK2.NET
Name Server: DNS2.UK2.NET
Name Server: DNS3.UK2.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-11-08T20:14:42Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
periodicvideos.com	109.123.72.70	86400

Host	MX Record	Priority	TTL
periodicvideos.com	uk2mxarray4.uk2.net	0	86400

Host	NS Record	TTL
periodicvideos.com	ultra101.uk2.net	86400
periodicvideos.com	ultra102.uk2.net	86400

Host	TXT Record	TTL

ultra101.uk2.net
TTL: 86400
Email address: hostmaster.periodicvideos.com
Serial: 2014021009
Refresh: 10800
Retry: 1800
Expire: 604800
Minimum: 86400

Periodicvideos.com HTML Check

HTML Validation Tool

Errors

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

Internal encoding declaration “iso-8859-1” disagrees with the actual encoding of the document (“utf-8”).

Bad value “text/html; charset=ISO-8859-1” for attribute “content” on element “meta”: “iso-8859-1” is not a preferred encoding name. The preferred label for this encoding is “windows-1252”.

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

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

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

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

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

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

The element “img” with the attribute “usemap” must not appear as a descendant of the “a” element.

Attribute “background” not allowed on element “table” at this point.

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

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

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

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

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

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

Attribute “background” not allowed on element “td” at this point.

The “valign” 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 “p” element is obsolete. Use CSS instead.

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

Element “area” is missing required attribute “alt”.

Warnings

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

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

Periodicvideos.com Desktop Performance

Last tested: 11/21/2015

Desktop Speed

54%

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Optimize images

Enable compression

Minify HTML

Desktop Resource Breakdown

Total Resources	171
Number of Hosts	6
Static Resources	163
JavaScript Resources	4
CSS Resources	1

Periodicvideos.com Mobile Insights

Last tested: 09/03/2019

Mobile Usability

61%

Use legible font sizes

Size tap targets appropriately

Configure the viewport

Mobile Speed

46%

Leverage browser caching

Optimize images

Enable compression

Minify HTML

Mobile Resource Breakdown

Total Resources	191
Number of Hosts	7
Static Resources	184
JavaScript Resources	6
CSS Resources	1

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Periodicvideos.com The Periodic Table of Videos - University of Nottingham

Short videos about every element on the periodic table, plus other cool experiments and chemistry stuff

Periodicvideos.com Overview

Periodicvideos.com Rank Summary

Periodicvideos.com Website Safety

Periodicvideos.com Rank History

Periodicvideos.com Hosting Information

Periodicvideos.com Domain Registration and Settings

Periodicvideos.com HTML Check

Periodicvideos.com Desktop Performance

Periodicvideos.com Mobile Insights

Periodicvideos.com Similar Audits

Periodicvideos.com Common Typos