libretexts.org - Innovative OER Platform

Libretexts.org Quick Summary

Status

Online

Server IP address resolved: Yes

Http response code: 200

Response time: 0.62 sec.

Last Checked: 11/17/2024

Libretexts.org traffic estimate is about 543,677 unique visitors and 4,349,416 pageviews per day. The approximated value of libretexts.org is 4,696,920 USD. Every unique visitor makes about 8 pageviews on average.

libretexts.org is hosted by CLOUDFLARENET - Cloudflare, Inc., US. See the list of other websites hosted by CLOUDFLARENET - Cloudflare, Inc., US.

Libretexts.org is registered under .ORG top-level domain. Check other websites in .ORG zone.

During the last check (October 13, 2024) libretexts.org has a valid and up-to-date SSL certificate issued by Let's Encrypt that expires on December 11, 2024, please click the “Refresh” button for SSL Information at the Safety Information section. Check other websites using SSL certificates issued by Let's Encrypt.

In accordance with Google Safe Browsing and Symantec libretexts.org is pretty a safe domain.

Relying on Google Mobile-Friendly test libretexts.org is well optimized for mobile and tablet devices.

Libretexts.org General Information

Information not available

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Libretexts.org Safety Information

Rankchart Summary

Unknown

Updated: 11/17/2024

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

Safe

Updated: 03/21/2024

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Norton ConnectSafe evaluates websites for any unsafe and inapropriate content. The results are important for families with young children.

Google Safe Search

Unknown

Updated: 11/17/2024

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SafeSearch works as a parental control tool to filter out any content that might be inappropriate for your children.

Google Safe Browsing

Safe

Malware not found

Phishing not detected

Unwanted software not found

Harmfull applications not found

Updated: 01/09/2019

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

McAfee® WebAdvisor

Safe

Updated: 11/07/2021

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McAfee assesses libretexts.org 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 libretexts.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Not Checked

Updated: 11/17/2024

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

Libretexts.org SSL Information

Information about SSL/TLS certificates

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Domain	libretexts.org
Issuer Organization	Let's Encrypt
Issuer	R10
Algorithm	RSA-SHA256
Valid form	09/12/2024
Expiration	12/11/2024
Signed	Certificate is not self signed
Additional Domains	adopt.libretexts.org awesomefiles.libretexts.org chat.libretexts.org construct.libretexts.org donate.libretexts.org go.libretexts.org harvest.libretexts.org harvestrequest.libretexts.org launchpad.libretexts.org libretexts.org officehours.libretexts.org quimica.libretexts.org register.libretexts.org static.libretexts.org statistics.libretexts.org support.libretexts.org test-newsite.libretexts.org www.libretexts.org youtube.libretexts.org zoom.libretexts.org

SSL Checker

Libretexts.org Server Information

Libretexts.org Server Location

Where website hosting server is located?

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Libretexts.org ASN Information

Information about IP address owner

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ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Updated: 03/10/2024

Raw ASN data:

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 13335
ASName: CLOUDFLARENET
ASHandle: AS13335
RegDate: 2010-07-14
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/autnum/13335

OrgName: Cloudflare, Inc.
OrgId: CLOUD14
Address: 101 Townsend Street
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2010-07-09
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/entity/CLOUD14

OrgTechHandle: ADMIN2521-ARIN
OrgTechName: Admin
OrgTechPhone: +1-650-319-8930
OrgTechEmail: rir@cloudflare.com
OrgTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

OrgAbuseHandle: ABUSE2916-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-650-319-8930
OrgAbuseEmail: abuse@cloudflare.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

OrgNOCHandle: NOC11962-ARIN
OrgNOCName: NOC
OrgNOCPhone: +1-650-319-8930
OrgNOCEmail: noc@cloudflare.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RNOCHandle: NOC11962-ARIN
RNOCName: NOC
RNOCPhone: +1-650-319-8930
RNOCEmail: noc@cloudflare.com
RNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RTechHandle: ADMIN2521-ARIN
RTechName: Admin
RTechPhone: +1-650-319-8930
RTechEmail: rir@cloudflare.com
RTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

RAbuseHandle: ABUSE2916-ARIN
RAbuseName: Abuse
RAbusePhone: +1-650-319-8930
RAbuseEmail: abuse@cloudflare.com
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Geolocation

ASN Lookup

Libretexts.org Domain Name Information

Libretexts.org DNS Information

Domain name service records

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Host	A Record	TTL

Libretexts.org Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

Domain Name: libretexts.org
Registry Domain ID: c2b3ddc634124809bd69ca9ba8623db2-LROR
Registrar WHOIS Server: http://whois.google.com
Registrar URL: https://domains.google.com
Updated Date: 2022-09-05T22:17:16Z
Creation Date: 2016-07-22T22:17:14Z
Registry Expiry Date: 2023-07-22T22:17:14Z
Registrar: Google LLC
Registrar IANA ID: 895
Registrar Abuse Contact Email: registrar-abuse@google.com
Registrar Abuse Contact Phone: +1.8772376466
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Contact Privacy Inc. Customer 7151571251
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: ON
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: CA
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns1.digitalocean.com
Name Server: ns2.digitalocean.com
Name Server: ns3.digitalocean.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-10-11T06:13:20Z

Whois

DNS Lookup

Libretexts.org HTML Validation

Libretexts.org W3C HTML Markup Validation

HTML markup errors and warnings

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Warnings:

Consider avoiding viewport values that prevent users from resizing documents.

The “navigation” role is unnecessary for element “nav”.

A table row was 5 columns wide and exceeded the column count established by the first row (2).

A table row was 1 columns wide, which is less than the column count established by the first row (2).

The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.

The “contentinfo” role is unnecessary for element “footer”.

Errors:

Bad value “45px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.

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

Attribute “width” not allowed on element “div” at this point.

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

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

Attribute “height” not allowed on element “tr” at this point.

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

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

The “align” attribute on the “h1” element is obsolete. Use CSS instead.

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

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

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

The “align” attribute on the “h3” element is obsolete. Use CSS instead.

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

Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).

Stray end tag “div”.

HTML Validator

Libretexts.org Desktop Performance

How Well Libretexts.org Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

77%

Leverage browser caching

Optimize images

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

Minify JavaScript

Minify CSS

Minify HTML

Updated: 03/08/2018

Libretexts.org Mobile Performance

How Optimized Is Libretexts.org for Mobile Devices?

Tips on speeding up mobile site performance

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Usability
Speed
Resource Breakdown

Usability

96%

Size content to viewport

Updated: 03/08/2018

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Libretexts.org URL Typos

Most common user URL mistypes for libretexts.org

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Total Resources	29
Number of Hosts	3
Static Resources	26
JavaScript Resources	9
CSS Resources	5

Text	100.7 KBytes
CSS	337.0 KBytes
Images	295.9 KBytes
HTML	16.2 KBytes
JavaScript	271.7 KBytes

Total Resources	29
Number of Hosts	3
Static Resources	26
JavaScript Resources	9
CSS Resources	5

Text	100.7 KBytes
CSS	337.0 KBytes
Images	295.9 KBytes
HTML	16.2 KBytes
JavaScript	271.7 KBytes

Libretexts.org Innovative OER Platform - LibreTexts

LibreTexts is an ecosystem of connected tools that empower educators to create Open Educational Resources at scale.

Libretexts.org Quick Summary

Libretexts.org General Information

Libretexts.org Safety Information

Libretexts.org SSL Information

Libretexts.org Server Information

Libretexts.org Server Location

Libretexts.org ASN Information

Libretexts.org Domain Name Information

Libretexts.org DNS Information

Libretexts.org Whois Information

Libretexts.org HTML Validation

Libretexts.org W3C HTML Markup Validation

Libretexts.org Desktop Performance

How Well Libretexts.org Performs On Desktops?

Libretexts.org Mobile Performance

How Optimized Is Libretexts.org for Mobile Devices?

Libretexts.org Nearest Competitors

Estimated Nearest Competitors Of Libretexts.org

Libretexts.org URL Typos

Most common user URL mistypes for libretexts.org