Cocalc.com Collaborative Calculation and Data Science

CoCalc landing pages and documentation

Cocalc.com Overview

CoCalc.com is a cloud-based service that offers collaborative calculation tools for students, researchers, and professionals. The website's structure is well-designed with a clean and simple layout. The homepage is minimalistic with little text, and instead consists mainly of icons and images to convey the website's features. The website’s name, "CoCalc" refers to its tools and services, along with its tagline "Collaborative Calculation in the Cloud", which gives a clear understanding of what the site offers.

The website’s menu has links to the main sections of the site, such as its features, pricing, community, and blog. The site's features and pricing pages provide in-depth information for what the site offers to its users. The community page seeks to build a community around the website’s services by providing information on events, webinars, and news. The blog section offers technical articles and allows customers to ask questions about the software and request features.

The website appears family-friendly with no inappropriate content or advertising. Its content is primarily related to statistics, math, physics, and other scientific fields.

CoCalc.com is hosted by Cloudflare, Inc, a reputable United States hosting company known for its fast and reliable cloud-based services. The website's SSL certificate is issued by COMODO CA Limited, which indicates a secure connection between the server and the user's web browser.

The website's performance offers room for improvement, ranking 50 in PageSpeed insights. According to the report, the website has room for improvement in several areas, including optimizing images and reducing JavaScript and CSS render-blocking, which would make the site faster and more efficient.

In conclusion, CoCalc.com is a well-designed and user-friendly website that provides collaborative calculation tools for students, researchers, and professionals. The site offers a secure connection and trustworthy hosting, ideal for the storage of sensitive information. Despite its impressive client base, there is still significant room for improvement in the website’s optimization to enhance its performance further.

Cocalc.com Rank Summary

Global Rank

111,634

Average Load Time

4.03sec

Links In Count

Website Value

$109,610

Audience Geography. Where are cocalc.com visitors located?

Country	Visitors
United States US	41.2%
India IN	8.3%
France FR	7.5%
United Kingdom GB	3.7%
Italy IT	3.6%
Germany DE	3%
Australia AU	3%
Canada CA	1%
Peru PE	0.8%
Other	28%

Country	Pageviews
United States US	39.6%
India IN	8.7%
Italy IT	7.1%
France FR	6.3%
Australia AU	5.4%
Germany DE	2.6%
United Kingdom GB	2.3%
Peru PE	1.4%
Canada CA	0.9%
Other	25.8%

Country	Rank
Peru PE	26577
Australia AU	33561
France FR	38488
United States US	40434
Italy IT	45393
India IN	56552
United Kingdom GB	78186
Indonesia ID	97000
Germany DE	103567
Canada CA	135117
Russian Federation RU	313897

Where do visitors go on cocalc.com?

Subdomain	Pageviews
cocalc.com	82.5%
share.cocalc.com	10.6%
doc.cocalc.com	6.89%

Subdomain	Pageviews per User
share.cocalc.com	2
doc.cocalc.com	2
cocalc.com	1.6

Subdomain	Reach
cocalc.com	91.98%
share.cocalc.com	10.27%
doc.cocalc.com	7.26%

How popular is cocalc.com?

Period	Global Rank	Global Rank Delta
past 3 months	111634	-18329
past month	105285	-25082
past week	120596	5419
yesterday	174357	43929

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	156496	-19840	32	19%	1.7	-6.704%
30	142572	-47746	36	43%	1.8	10%
7	156843	-12421	32	8%	2	30%
1	202260	52061	2	-37.56%	2	-3.75%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	100836	-19174	69	28%
30	97180	-18751	73	20%
7	116145	12808	59	-13.88%
1	180523	38563	4	-35.14%

Cocalc.com Website Safety

Overview

Last Updated: 11/26/2024

Overall result - cocalc.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: 02/15/2024

cocalc.com is safe.

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

Google Safe Search

Last Updated: 08/26/2017

cocalc.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

cocalc.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: 03/10/2021

cocalc.com is safe.

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

Web of Trust

Last Updated: 11/26/2024

cocalc.com child safety is unknown.

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

SSL Information

SSL Checker Tool

Domain	cocalc.com
Issuer Organization	Google Trust Services
Issuer	WE1
Algorithm	ecdsa-with-SHA256
Valid form	09/23/2024
Expiration	12/22/2024
Signed	Certificate is not self signed
Additional Domains	cocalc.com *.cocalc.com

Cocalc.com Rank History

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

Cocalc.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 03/20/2024

#
# 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: 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.
#

Cocalc.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: COCALC.COM
Registry Domain ID: 2047029241_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2023-07-28T11:09:02Z
Creation Date: 2016-07-28T00:17:51Z
Registry Expiry Date: 2024-07-28T00:17:51Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: 480-624-2505
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: CANDY.NS.CLOUDFLARE.COM
Name Server: RAJEEV.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2023-10-31T17:26:08Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

Cocalc.com HTML Check

HTML Validation Tool

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

A table row was 4 columns wide, which is less than the column count established by the first row (5).

A table row was 0 columns wide, which is less than the column count established by the first row (5).

Errors

Element “meta” is missing one or more of the following attributes: “content”, “property”.

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

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

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

Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)

Row 2 of a row group established by a “tbody” element has no cells beginning on it.

Row 3 of a row group established by a “tbody” element has no cells beginning on it.

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

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

Cocalc.com Desktop Performance

Last tested: 03/18/2019

Desktop Speed

52%

Optimize images

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

Leverage browser caching

Prioritize visible content

Desktop Resource Breakdown

Total Resources	39
Number of Hosts	11
Static Resources	24
JavaScript Resources	10
CSS Resources	4

Cocalc.com Mobile Insights

Last tested: 03/18/2019

Mobile Usability

98%

Size tap targets appropriately

Mobile Speed

50%

Optimize images

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

Prioritize visible content

Leverage browser caching

Mobile Resource Breakdown

Total Resources	40
Number of Hosts	12
Static Resources	25
JavaScript Resources	10
CSS Resources	4

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Cocalc.com Collaborative Calculation and Data Science

CoCalc landing pages and documentation

Cocalc.com Overview

Cocalc.com Rank Summary

Cocalc.com Website Safety

Cocalc.com Rank History

Cocalc.com Hosting Information

Cocalc.com Domain Registration and Settings

Cocalc.com HTML Check

Cocalc.com Desktop Performance

Cocalc.com Mobile Insights

Cocalc.com Similar Audits

Cocalc.com Common Typos