Teach12.com The Great Courses

Teach12.com Overview

Teach12.com ranking shows that the page is at position 806,060 over the world.

In terms of rank-to-traffic ratio, teach12.com has 918 unique users per day, viewing 917 pages. The rank based value of teach12.com is 9,461 USD. Every user makes 1.08 pageviews on average.

Teach12.com boasts a link base consisting of 674 referring domains and 794 external backlinks, as revealed by the data obtained from web network scanning.

Teach12.com top-level domain belongs to .COM domain zone. Check other webpages in .COM zone.

According the last verification test in December 26, 2024, teach12.com has an invalid SSL certificate. Click button “Update” SSL Information at the Safety Information section.

Based on data from Google Safe Browsing, Google Safe Search, Symantec and Web of Trust teach12.com is a fairly safe domain.

According the Mobile-Friendly test by Google teach12.com is nice optimized for mobile devices and tablets, however the webpage speed could be improved.

Teach12.com Rank Summary

Global Rank

806,060

Average Load Time

1.30sec

Links In Count

226

Website Value

$8,760

Audience Geography. Where are teach12.com visitors located?

Country	Visitors

Country	Pageviews

Country	Rank

Where do visitors go on teach12.com?

Subdomain	Pageviews
secureimages.teach12.com	100%

Subdomain	Pageviews per User
secureimages.teach12.com	2

Subdomain	Reach
secureimages.teach12.com	100%

How popular is teach12.com?

Period	Global Rank	Global Rank Delta
past 3 months	806060	255187
past month	1775091	483386

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1069545	297464	2	-34.25%	1	10%
30	1824176	427083	1	-37.83%	2	6%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	728065	250269	73	-40.49%
30	1814435	514443	2	-41.34%

Teach12.com Website Safety

Overview

Last Updated: 12/26/2024

Overall result - teach12.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: 03/21/2024

teach12.com is safe.

Norton ConnectSafe evaluates teach12.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 06/21/2017

teach12.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

teach12.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: 02/19/2021

teach12.com is safe.

McAfee assesses teach12.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 teach12.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/12/2019

teach12.com child safety is very good.

The WOT calculates reputation of the teach12.com. This reputation system receives ratings from users and information from third-party sources, assesses the teach12.com for safety features and confirms, whether teach12.com is suitable for children.

SSL Information

SSL Checker Tool

WARNING!	Certificate download error. Previous scan results are shown below.
Domain	Unknown
Issuer Organization	Unknown
Issuer	Unknown
Algorithm	Unknown
Valid form	Unknown
Expiration	Unknown
Signed	No information
Additional Domains

Teach12.com Rank History

Alexa Rank shows how popular teach12.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If teach12.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 teach12.com and pageviews on teach12.com over the past 3 months.

Teach12.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 397215

ASN Title: ULTRADNS, US

Last Update: 03/17/2024

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2020, American Registry for Internet Numbers, Ltd.
#

ASNumber: 397213 - 397243
ASName: ULTRADNS
ASHandle: AS397213
RegDate: 2018-12-04
Updated: 2018-12-04
Ref: https://rdap.arin.net/registry/autnum/397213

OrgName: NeuStar, Inc.
OrgId: NEUS
Address: 45980 Center Oak Plaza
Address: Network Operations Center
City: Sterling
StateProv: VA
PostalCode: 20166
Country: US
RegDate: 2001-03-21
Updated: 2018-01-10
Comment: NPAC
Ref: https://rdap.arin.net/registry/entity/NEUS

OrgTechHandle: NETWO336-ARIN
OrgTechName: Network Engineering
OrgTechPhone: +1-866-638-6622
OrgTechEmail: wan.engineering@neustar.biz
OrgTechRef: https://rdap.arin.net/registry/entity/NETWO336-ARIN

OrgAbuseHandle: NETWO336-ARIN
OrgAbuseName: Network Engineering
OrgAbusePhone: +1-866-638-6622
OrgAbuseEmail: wan.engineering@neustar.biz
OrgAbuseRef: https://rdap.arin.net/registry/entity/NETWO336-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2020, American Registry for Internet Numbers, Ltd.
#

Teach12.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: TEACH12.COM
Registry Domain ID: 51070095_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.register.com
Registrar URL: http://www.register.com
Updated Date: 2021-12-05T10:07:01Z
Creation Date: 2001-01-04T16:35:53Z
Registry Expiry Date: 2026-01-04T16:35:53Z
Registrar: Register.com, Inc.
Registrar IANA ID: 9
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8003337680
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: UDNS1.ULTRADNS.NET
Name Server: UDNS2.ULTRADNS.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2023-09-15T12:00:02Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

Teach12.com HTML Check

HTML Validation Tool

Errors

Obsolete doctype. Expected “<!DOCTYPE html>”.

Attribute “name” not allowed on element “link” at this point.

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

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

Bad value “” for attribute “name” on element “input”: Must not be empty.

Bad value “” for attribute “action” on element “form”: Must be non-empty.

Attribute “href” not allowed on element “span” at this point.

Duplicate attribute “class”.

Duplicate ID “keep_logged”.

Attribute “alt” not allowed on element “input” at this point.

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

Character reference was not terminated by a semicolon.

Attribute “a” not allowed on element “a” at this point.

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

End tag “br”.

Duplicate ID “existing-email-text”.

Stray end tag “div”.

Element “img” is missing required attribute “src”.

The “for” attribute of the “label” element must refer to a non-hidden form control.

The “itemprop” attribute was specified, but the element is not a property of any item.

Warnings

The first occurrence of ID “keep_logged” was here.

The first occurrence of ID “existing-email-text” was here.

Teach12.com Desktop Performance

Last tested: 07/09/2018

Desktop Speed

38%

Optimize images

Leverage browser caching

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

Reduce server response time

Avoid landing page redirects

Enable compression

Minify JavaScript

Minify CSS

Minify HTML

Desktop Resource Breakdown

Total Resources	201
Number of Hosts	39
Static Resources	140
JavaScript Resources	34
CSS Resources	4

Teach12.com Mobile Insights

Last tested: 07/09/2018

Mobile Usability

95%

Size content to viewport

Size tap targets appropriately

Mobile Speed

25%

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

Leverage browser caching

Optimize images

Avoid landing page redirects

Reduce server response time

Enable compression

Minify JavaScript

Minify CSS

Minify HTML

Mobile Resource Breakdown

Total Resources	199
Number of Hosts	37
Static Resources	132
JavaScript Resources	32
CSS Resources	3

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www.teach12.con

Teach12.com The Great Courses

Teach12.com Overview

Teach12.com Rank Summary

Teach12.com Website Safety

Teach12.com Rank History

Teach12.com Hosting Information

Teach12.com Domain Registration and Settings

Teach12.com HTML Check

Teach12.com Desktop Performance

Teach12.com Mobile Insights

Teach12.com Similar Audits

Teach12.com Common Typos