Q-chem.com Q-Chem 6.1 | Fast, Accurate, Robust Chemistry Simulations | Q-Chem

Q-Chem: Chemistry software, theoretical chemistry and quantum chemistry software for research, visualization, quantum calculation and molecular modeli...

Q-chem.com Overview

Q-chem.com ranking shows that the page is at position 1,022,739 over the world, while the bulk of its audience is from United States, where it ranks 402,219.

In terms of rank-to-traffic ratio, q-chem.com has 354 unique users per day, viewing 715 pages. The rank based value of q-chem.com is 6,314 USD. Every user makes 2.14 pageviews on average.

Q-chem.com boasts a link base consisting of 259 referring domains and 311 external backlinks, as revealed by the data obtained from web network scanning.

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

According the last verification test in July 17, 2024, q-chem.com has an expired SSL certificate issued by Let's Encrypt (expired on September 16, 2024). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by Let's Encrypt.

Based on data from Google Safe Browsing, Google Safe Search and Symantec q-chem.com is a fairly safe domain.

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

Q-chem.com Rank Summary

Global Rank

1,022,739

Average Load Time

0.00sec

Links In Count

126

Website Value

$5,846

Audience Geography. Where are q-chem.com visitors located?

Country	Visitors
United States US	31.8%
Other	68.6%

Country	Pageviews
United States US	42%
Other	58%

Country	Rank
United States US	402219

Where do visitors go on q-chem.com?

Subdomain	Pageviews
q-chem.com	94.09%
other	5.92%

Subdomain	Pageviews per User
q-chem.com	2

Subdomain	Reach
q-chem.com	95.46%

How popular is q-chem.com?

Period	Global Rank	Global Rank Delta
past 3 months	1022739	-343249
past month	864086	-243900
past week	3005163	1180057

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1199274	17527	2	-0.32%	2	-44.6%
30	1118149	-189854	2	30%	2	-15.26%
7	2719021	957717	1	-53.933%	2	-15.25%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	1002076	-543032	38	80%
30	800887	-290339	5	50%
7	3190342	1199967	1	-45.33%

Q-chem.com Website Safety

Overview

Last Updated: 11/22/2024

Overall result - q-chem.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: 03/19/2024

q-chem.com is safe.

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

Google Safe Search

Last Updated: 06/08/2017

q-chem.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

q-chem.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: 02/18/2021

q-chem.com is safe.

McAfee assesses q-chem.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 q-chem.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 11/22/2024

q-chem.com child safety is unknown.

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

SSL Information

SSL Checker Tool

Domain	www.q-chem.com
Issuer Organization	Let's Encrypt
Issuer	R10
Algorithm	RSA-SHA256
Valid form	06/18/2024
Expiration	09/16/2024
Signed	Certificate is not self signed
Additional Domains	q-chem.com www.q-chem.com

Q-chem.com Rank History

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

Q-chem.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 14061

ASN Title: DIGITALOCEAN-ASN - DigitalOcean, LLC, US

Last Update: 11/10/2024

#
# 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: 14061
ASName: DIGITALOCEAN-ASN
ASHandle: AS14061
RegDate: 2012-09-25
Updated: 2012-09-25
Ref: https://rdap.arin.net/registry/autnum/14061

OrgName: DigitalOcean, LLC
OrgId: DO-13
Address: 101 Ave of the Americas
Address: 10th Floor
City: New York
StateProv: NY
PostalCode: 10013
Country: US
RegDate: 2012-05-14
Updated: 2018-07-17
Comment: http://www.digitalocean.com
Comment: Simple Cloud Hosting
Ref: https://rdap.arin.net/registry/entity/DO-13

OrgAbuseHandle: ABUSE5232-ARIN
OrgAbuseName: Abuse, DigitalOcean
OrgAbusePhone: +1-347-875-6044
OrgAbuseEmail: abuse@digitalocean.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE5232-ARIN

OrgNOCHandle: NOC32014-ARIN
OrgNOCName: Network Operations Center
OrgNOCPhone: +1-347-875-6044
OrgNOCEmail: noc@digitalocean.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC32014-ARIN

OrgTechHandle: NOC32014-ARIN
OrgTechName: Network Operations Center
OrgTechPhone: +1-347-875-6044
OrgTechEmail: noc@digitalocean.com
OrgTechRef: https://rdap.arin.net/registry/entity/NOC32014-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.
#

Q-chem.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: Q-CHEM.COM
Registry Domain ID: 4132490_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://networksolutions.com
Updated Date: 2020-02-20T08:23:05Z
Creation Date: 1996-04-19T04:00:00Z
Registry Expiry Date: 2023-04-20T04:00:00Z
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8003337680
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS.ONEWORLDHOSTING.COM
Name Server: NS2.ONEWORLDHOSTING.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-01-03T07:07:36Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

Q-chem.com HTML Check

HTML Validation Tool

Errors

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

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

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”.

Stray start tag “html”.

Attribute “xmlns:fb” not allowed here.

Bad value “Banner-10/images/FreeEval Btn_Over2.png')” for attribute “onload” on element “body”: missing ; before statement

Bad value “qchem-website/Banner-10/images/FreeEval Btn_Up2.gif” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

Bad value “Free Demo Btn” for attribute “id” on element “img”: An ID must not contain whitespace.

The “name” attribute on the “img” element is obsolete. Use the “id” attribute instead.

Bad value “images/Qchem MANUAL logo.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

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

Bad value “images/IQmol Logosmall.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

Bad value “images/Video of the Week banner30.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

Bad value “/images/QC51 Logo.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

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

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

Stray end tag “center”.

Malformed byte sequence: “92”.

The “longdesc” attribute on the “img” element is obsolete. Use a regular “a” element to link to the description.

Stray end tag “font”.

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

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

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

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

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

Stray end tag “a”.

Element “h1” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

End tag “br”.

End tag for “body” seen, but there were unclosed elements.

Unclosed element “div”.

Warnings

Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.

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

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

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Q-chem.com Desktop Performance

Last tested: 09/06/2019

Desktop Speed

27%

Optimize images

Leverage browser caching

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

Enable compression

Minify HTML

Minify CSS

Minify JavaScript

Desktop Resource Breakdown

Total Resources	24
Number of Hosts	6
Static Resources	19
JavaScript Resources	4
CSS Resources	1

Q-chem.com Mobile Insights

Last tested: 07/11/2017

Mobile Usability

66%

Use legible font sizes

Configure the viewport

Size tap targets appropriately

Mobile Speed

48%

Optimize images

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

Leverage browser caching

Enable compression

Minify HTML

Minify CSS

Mobile Resource Breakdown

Total Resources	43
Number of Hosts	7
Static Resources	37
JavaScript Resources	3
CSS Resources	1

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Q-chem.com Q-Chem 6.1 | Fast, Accurate, Robust Chemistry Simulations | Q-Chem

Q-Chem: Chemistry software, theoretical chemistry and quantum chemistry software for research, visualization, quantum calculation and molecular modeli...

Q-chem.com Overview

Q-chem.com Rank Summary

Q-chem.com Website Safety

Q-chem.com Rank History

Q-chem.com Hosting Information

Q-chem.com Domain Registration and Settings

Q-chem.com HTML Check

Q-chem.com Desktop Performance

Q-chem.com Mobile Insights

Q-chem.com Similar Audits

Q-chem.com Common Typos