21.edu.ar Universidad Siglo 21 | Siglo 21

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21.edu.ar Overview

out of 100 for desktop and 40 out of 100 for mobile

Mobile Usability score: 100 out of 100

21.edu.ar is a website that provides information about various educational programs and courses that are available at Siglo 21, including undergraduate and postgraduate programs in various fields of study. The website provides information about both distance learning and in-person programs, highlighting the different modes of learning available to students.

The website has a clean and professional design that is easy to navigate, with a menu bAR at the top of the page that allows users to quickly access different sections of the site. The homepage features a search bAR, which users can use to search for specific programs or courses, as well as a list of featured programs and courses, providing users with a quick overview of what Siglo 21 has to offer.

One notable feature of 21.edu.ar is its mobile usability score, which is 100 out of 100. This indicates that the website is very user-friendly for mobile users, with a design that is optimized for smaller screens and touch-based navigation.

However, the website's PageSpeed Insights scores are relatively low, with a speed score of 45 out of 100 for desktop and 40 out of 100 for mobile. This indicates that the website may be slow to load on some devices and connections, which can negatively impact user experience and lead to high bounce rates.

Despite this, the website appears to be family-friendly, with no adult content or language that could be considered inappropriate for children. Additionally, the website is secured by an SSL issued by COMODO, which ensures that user data is encrypted and protected against unauthorized access.

Overall, 21.edu.ar is a well-designed website that provides useful information about educational programs and courses offered by Siglo 21. With its focus on both distance learning and in-person programs, the website is a valuable resource for anyone seeking to further their education, whether they are looking for flexible, online learning options or traditional classroom-based programs.

21.edu.ar Rank Summary

Global Rank

128,285

Average Load Time

1.80sec

Links In Count

245

Website Value

$94,900

Audience Geography. Where are 21.edu.ar visitors located?

Country	Visitors
Argentina AR	96.9%
Other	3.1%

Country	Pageviews
Argentina AR	98.8%
Other	1.2%

Country	Rank
Argentina AR	1217

Where do visitors go on 21.edu.ar?

Subdomain	Pageviews
21.edu.ar	73.49%
contenidos.21.edu.ar	24.28%
identidad.21.edu.ar	1.02%
mails.21.edu.ar	0.77%
other	0.45%

Subdomain	Pageviews per User
21.edu.ar	2.7
contenidos.21.edu.ar	1.5
mails.21.edu.ar	1
identidad.21.edu.ar	1

Subdomain	Reach
21.edu.ar	67.4%
contenidos.21.edu.ar	40.91%
identidad.21.edu.ar	2.1%
mails.21.edu.ar	1.92%

How popular is 21.edu.ar?

Period	Global Rank	Global Rank Delta
past 3 months	128285	20895
past month	119826	-8091
past week	104208	-12947
yesterday	96947	-68683

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	147353	21659	34	-16.89%	2.5	4%
30	137157	-10633	37	10%	2.5	2%
7	121873	-8105	44	10%	2.5	-8.029%
1	67477	-115161	98	200%	6	100%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	128666	22999	5	-20.42%
30	120995	-7626	55	10%
7	105401	-16440	67	20%
1	137157	-31006	6	30%

21.edu.ar Website Safety

Overview

Last Updated: 12/26/2024

Overall result - 21.edu.ar 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: 03/24/2024

21.edu.ar is safe.

Norton ConnectSafe evaluates 21.edu.ar for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 10/26/2016

21.edu.ar 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

21.edu.ar 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: 02/23/2021

21.edu.ar is safe.

McAfee assesses 21.edu.ar 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 21.edu.ar for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

21.edu.ar child safety is very good.

The WOT calculates reputation of the 21.edu.ar. This reputation system receives ratings from users and information from third-party sources, assesses the 21.edu.ar for safety features and confirms, whether 21.edu.ar is suitable for children.

SSL Information

SSL Checker Tool

Domain	*.21.edu.ar
Issuer Organization	GoDaddy.com, Inc.
Issuer	Go Daddy Secure Certificate Authority - G2
Algorithm	RSA-SHA256
Valid form	07/08/2024
Expiration	08/09/2025
Signed	Certificate is not self signed
Additional Domains	*.21.edu.ar 21.edu.ar

21.edu.ar Rank History

Alexa Rank shows how popular 21.edu.ar is in comparison with other sites. The most popular site has Alexa Rank equals 1. If 21.edu.ar 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 21.edu.ar and pageviews on 21.edu.ar over the past 3 months.

21.edu.ar Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 07/20/2024

#
# 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.
#

21.edu.ar Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

21.edu.ar domain is not supported

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

21.edu.ar HTML Check

HTML Validation Tool

Errors

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

Duplicate ID “searchbox”.

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

Duplicate ID “modal-applicant”.

Duplicate ID “mobile-menu”.

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

Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.

Bad value “” for attribute “width” on element “img”: The empty string is not a valid non-negative integer.

Bad value “” for attribute “height” on element “img”: The empty string is not a valid non-negative integer.

Duplicate ID “edit-submitted-grupoestu-modalidadxxi_rnd_588”.

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

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

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

End tag “div” seen, but there were open elements.

Unclosed element “fieldset”.

Stray end tag “fieldset”.

Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)

Duplicate attribute “type”.

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

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

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

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

Duplicate ID “webform-client-form-942”.

Duplicate ID “cmb-tipo-estudio”.

Duplicate ID “cmb-tipo-programa”.

Duplicate ID “cmb-tipo-modalidad”.

Duplicate ID “edit-submitted-grupoestu-modalidadxxi_rnd_936”.

Duplicate ID “edit-submitted-indicativopaisxxi”.

Duplicate ID “input-cel”.

Duplicate ID “input-tel”.

Duplicate ID “edit-submitted-emailxxi”.

Duplicate ID “node-6”.

Duplicate ID “edit-submitted-grupoestu-modalidadxxi_rnd_843”.

Duplicate ID “edit-submitted-localidadxxi-rnd-”.

Duplicate ID “edit-submitted-localidadxxi-rnd--autocomplete”.

Stray end tag “div”.

Duplicate ID “edit-submitted-grupoestu-modalidadxxi_rnd_746”.

Bad value “” for attribute “src” on element “img”: Must be non-empty.

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

The “aria-labelledby” attribute must point to an element in the same document.

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

The first occurrence of ID “searchbox” was here.

The first occurrence of ID “modal-applicant” was here.

The first occurrence of ID “mobile-menu” was here.

The “form” role is unnecessary for element “form”.

The first occurrence of ID “edit-submitted-grupoestu-modalidadxxi_rnd_588” was here.

The first occurrence of ID “webform-client-form-942” was here.

The first occurrence of ID “cmb-tipo-estudio” was here.

The first occurrence of ID “cmb-tipo-programa” was here.

The first occurrence of ID “cmb-tipo-modalidad” was here.

The first occurrence of ID “edit-submitted-grupoestu-modalidadxxi_rnd_936” was here.

The first occurrence of ID “edit-submitted-indicativopaisxxi” was here.

The first occurrence of ID “input-cel” was here.

The first occurrence of ID “input-tel” was here.

The first occurrence of ID “edit-submitted-emailxxi” was here.

The first occurrence of ID “node-6” was here.

The first occurrence of ID “edit-submitted-grupoestu-modalidadxxi_rnd_843” was here.

The first occurrence of ID “edit-submitted-localidadxxi-rnd-” was here.

The first occurrence of ID “edit-submitted-localidadxxi-rnd--autocomplete” was here.

The first occurrence of ID “edit-submitted-grupoestu-modalidadxxi_rnd_746” was here.

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

Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).

21.edu.ar Desktop Performance

Last tested: 12/10/2016

Desktop Speed

70%

Leverage browser caching

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

Optimize images

Enable compression

Minify JavaScript

Reduce server response time

Minify HTML

Desktop Resource Breakdown

Total Resources	114
Number of Hosts	37
Static Resources	57
JavaScript Resources	15
CSS Resources	10

21.edu.ar Mobile Insights

Last tested: 12/05/2017

Mobile Usability

99%

Size tap targets appropriately

Mobile Speed

45%

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

Leverage browser caching

Reduce server response time

Prioritize visible content

Minify JavaScript

Enable compression

Minify HTML

Mobile Resource Breakdown

Total Resources	129
Number of Hosts	40
Static Resources	74
JavaScript Resources	32
CSS Resources	10

21.edu.ar Common Typos

www.21.com
www.21.net
www.21.org
www.21.info
www.21.biz
www.21.us
www.21.mobi
www.1.edu.ar
www.21.edu.ar
www.2.edu.ar

21.edu.ar Universidad Siglo 21 | Siglo 21

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21.edu.ar Overview

21.edu.ar Rank Summary

21.edu.ar Website Safety

21.edu.ar Rank History

21.edu.ar Hosting Information

21.edu.ar Domain Registration and Settings

21.edu.ar HTML Check

21.edu.ar Desktop Performance

21.edu.ar Mobile Insights

21.edu.ar Similar Audits

21.edu.ar Common Typos