Cudoo.com Online Courses in Languages, Professional and Self-Development Skills

Cudoo is an eLearning platform with a growing library of 1300+ online courses in languages, professional, and self-development skills.

Cudoo.com Overview

Cudoo.com belongs to COGENT-174 - Cogent Communications, US. Check the list of other websites hosted by COGENT-174 - Cogent Communications, US.

In terms of rank-to-traffic ratio, cudoo.com has 5,188 unique users per day, viewing 15,721 pages. The rank based value of cudoo.com is 17,107 USD. Every user makes 3.21 pageviews on average.

Cudoo.com boasts a link base consisting of 469 referring domains and 553 external backlinks, as revealed by the data obtained from web network scanning.

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

According the last verification test in October 06, 2024, cudoo.com has an expired SSL certificate issued by Starfield Technologies, Inc. (expired on September 03, 2025). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by Starfield Technologies, Inc..

Based on data from Google Safe Browsing and Symantec cudoo.com is a fairly safe domain.

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

Cudoo.com Website Safety

Overview

Last Updated: 11/21/2025

Unknown status.

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: 03/31/2025

cudoo.com is safe.

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

Google Safe Search

Last Updated: 11/21/2025

Unknown status.

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

cudoo.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: 03/02/2021

cudoo.com is safe.

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

Web of Trust

Last Updated: 11/21/2025

cudoo.com child safety is unknown.

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

SSL Information

SSL Checker Tool

Domain	cudoo.com
Issuer Organization	Starfield Technologies, Inc.
Issuer	Starfield Secure Certificate Authority - G2
Algorithm	RSA-SHA256
Valid form	09/03/2024
Expiration	09/03/2025
Signed	Certificate is not self signed
Additional Domains	www.cudoo.com cudoo.com

Cudoo.com Rank History

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

Cudoo.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 174

ASN Title: COGENT-174 - Cogent Communications, US

Last Update: 09/08/2025

#
# 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: 174
ASName: COGENT-174
ASHandle: AS174
RegDate: 1996-05-15
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/174

OrgName: Cogent Communications
OrgId: COGC
Address: 2450 N Street NW
City: Washington
StateProv: DC
PostalCode: 20037
Country: US
RegDate: 2000-05-29
Updated: 2017-08-17
Ref: https://rdap.arin.net/registry/entity/COGC

ReferralServer: rwhois://rwhois.cogentco.com:4321

OrgNOCHandle: ZC108-ARIN
OrgNOCName: Cogent Communications
OrgNOCPhone: +1-877-875-4311
OrgNOCEmail: noc@cogentco.com
OrgNOCRef: https://rdap.arin.net/registry/entity/ZC108-ARIN

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName: Cogent Abuse
OrgAbusePhone: +1-877-875-4311
OrgAbuseEmail: abuse@cogentco.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/COGEN-ARIN

OrgTechHandle: IPALL-ARIN
OrgTechName: IP Allocation
OrgTechPhone: +1-877-875-4311
OrgTechEmail: ipalloc@cogentco.com
OrgTechRef: https://rdap.arin.net/registry/entity/IPALL-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.
#

%rwhois V-1.5:0010b0:00 rwhois.cogentco.com (CGNT rwhoisd 0.0.0)
%error 230 No objects found

Cudoo.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: CUDOO.COM
Registry Domain ID: 1881079203_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2022-10-24T21:01:44Z
Creation Date: 2014-10-19T03:01:23Z
Registry Expiry Date: 2032-10-19T03:01:23Z
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: NS-CLOUD-D1.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-D2.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-D3.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-D4.GOOGLEDOMAINS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-11-03T08:10:14Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
cudoo.com	146.148.16.197	300

Host	MX Record	Priority	TTL
cudoo.com	aspmx.l.google.com	10	300
cudoo.com	alt1.aspmx.l.google.com	20	300
cudoo.com	alt2.aspmx.l.google.com	30	300
cudoo.com	aspmx2.googlemail.com	40	300
cudoo.com	aspmx3.googlemail.com	50	300

Host	NS Record	TTL
cudoo.com	ns-cloud-d1.googledomains.com	21600
cudoo.com	ns-cloud-d2.googledomains.com	21600
cudoo.com	ns-cloud-d3.googledomains.com	21600
cudoo.com	ns-cloud-d4.googledomains.com	21600

Host	TXT Record	TTL
cudoo.com	google-site-verification=ljof9ruAHdbr_Db54-SP-DzJHugF-0CuzlxJTBk1wRc	300
cudoo.com	v=spf1 include:_spf.google.com include:spf.mailjet.com include:servers.mcsv.net ~all	300

ns-cloud-d1.googledomains.com
TTL: 21600
Email address: cloud-dns-hostmaster.google.com
Serial: 1
Refresh: 21600
Retry: 3600
Expire: 259200
Minimum: 300

Cudoo.com HTML Check

HTML Validation Tool

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

The first occurrence of ID “cudoo_search_wrap” was here.

The first occurrence of ID “cudoo_search_form” was here.

The first occurrence of ID “cudoo_search_btn” was here.

The first occurrence of ID “cudoo_search_loading” was here.

The first occurrence of ID “use_navigation_msg” was here.

The first occurrence of ID “cudoo_search_input” was here.

The first occurrence of ID “cudoo_search_loading_wrap” was here.

The first occurrence of ID “cudoo_search_results_wrap” was here.

The first occurrence of ID “cudoo_search_results” was here.

The first occurrence of ID “Shape” was here.

The first occurrence of ID “Layer_1” was here.

The first occurrence of ID “Group” was here.

The first occurrence of ID “Group-2” was here.

The first occurrence of ID “Fill-677” was here.

The first occurrence of ID “Fill-682” was here.

The first occurrence of ID “Fill-668” was here.

The first occurrence of ID “Fill-673” was here.

Errors

Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.

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

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

Duplicate ID “cudoo_search_wrap”.

Duplicate ID “cudoo_search_form”.

Duplicate ID “cudoo_search_btn”.

Duplicate ID “cudoo_search_loading”.

Duplicate ID “use_navigation_msg”.

Duplicate ID “cudoo_search_input”.

Duplicate ID “cudoo_search_loading_wrap”.

Duplicate ID “cudoo_search_results_wrap”.

Duplicate ID “cudoo_search_results”.

Duplicate ID “Shape”.

Duplicate ID “Layer_1”.

Bad value “” for attribute “srcset” on element “img”: Must contain one or more image candidate strings.

Duplicate ID “Group”.

Duplicate ID “Group-2”.

Duplicate ID “Fill-677”.

Duplicate ID “Fill-682”.

Duplicate ID “Fill-668”.

Duplicate ID “Fill-673”.

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

Cudoo.com Desktop Performance

Last tested: 06/04/2017

Desktop Speed

36%

Optimize images

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

Leverage browser caching

Minify JavaScript

Minify CSS

Enable compression

Desktop Resource Breakdown

Total Resources	155
Number of Hosts	25
Static Resources	132
JavaScript Resources	64
CSS Resources	39

Cudoo.com Mobile Insights

Last tested: 06/01/2017

Mobile Usability

100%

Mobile Speed

56%

Optimize images

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

Leverage browser caching

Minify JavaScript

Minify CSS

Enable compression

Mobile Resource Breakdown

Total Resources	159
Number of Hosts	27
Static Resources	141
JavaScript Resources	65
CSS Resources	41

Cudoo.com Common Typos

www.cudoo.com
www.cudoo.net
www.cudoo.org
www.cudoo.info
www.cudoo.biz
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www.cueoo.com
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www.cudcoo.com
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www.cudo.com
www.cudio.com
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www.cudop.com
www.cudoop.com
www.cudoo.con

Cudoo.com Online Courses in Languages, Professional and Self-Development Skills

Cudoo is an eLearning platform with a growing library of 1300+ online courses in languages, professional, and self-development skills.

Cudoo.com Overview

Cudoo.com Website Safety

Cudoo.com Rank History

Cudoo.com Hosting Information

Cudoo.com Domain Registration and Settings

Cudoo.com HTML Check

Cudoo.com Desktop Performance

Cudoo.com Mobile Insights

Cudoo.com Similar Audits

Cudoo.com Common Typos