C21.com Residential Real Estate Listings - Homes for Sale by Real Estate Agents | CENTURY 21

Use CENTURY 21 to find real estate property listings, houses for sale, real estate agents, and a mortgage calculator. We can assist you with buying or...

C21.com Overview

out of 100 (Desktop) & 32 out of 100 (Mobile)

C21.com is a website that provides residential real estate listings for people looking to buy or sell a home. The website offers a simple and user-friendly interface that makes it easy for users to search for properties in their desired location. The website's primary goal is to provide an all-in-one solution for buying and selling a home, as well as to provide information and resources about real estate agents and mortgage rates.

The website's name, c21.com, is short and easy to remember, making it an excellent choice for a real estate website. The title of the website, "Residential Real Estate Listings - Homes for Sale by Real Estate Agents | CENTURY 21," is descriptive and summarizes the primary content of the website. The description of the website is also informative and tells users exactly what they can expect to find on the website.

One of the essential features of c21.com is its user-friendly interface. The website offers a clear and straightforward navigation bar that enables users to find what they need quickly. The navigation bar includes links to property listings, real estate agents, mortgage rates, and other resources. There is also a search function on the homepage that allows users to find properties based on location, price, and other criteria.

According to the site statistics, c21.com has 1069 unique users per day, which is a decent amount of traffic. The website has an estimated value of $21,900, which suggests that it is a reasonably successful website. c21.com is hosted by Amazon.com, which is a reliable hosting platform that ensures stable and secure performance.

The top-level domain name of c21.com is .COM, which is one of the most popular domain extensions on the internet. This domain extension is recognized worldwide and is considered to be trustworthy and reliable.

Regarding its family-friendly nature, the website appears to be an appropriate website for families. There is no content on the site that would be considered inappropriate or unsuitable for children.

Page speed is crucial for user experience and search engine optimization. According to Google's PageSpeed Insights tool, the desktop version of c21.com has a score of 56 out of 100, which is average, while the mobile version has a score of 32 out of 100, which is considered low. This score indicates that there is room for improvement in terms of website speed and overall UX.

In summary, c21.com is an excellent

C21.com Rank Summary

Global Rank

427,217

Average Load Time

3.32sec

Links In Count

220

Website Value

$21,922

Audience Geography. Where are c21.com visitors located?

Country	Visitors
United States US	91%
Other	8.8%

Country	Pageviews
United States US	88.4%
Other	11.6%

Country	Rank
United States US	96519

Where do visitors go on c21.com?

Subdomain	Pageviews
revolution.c21.com	13.96%
rebrand.c21.com	5.78%
other	79.97%

Subdomain	Pageviews per User
revolution.c21.com	2
rebrand.c21.com	1

Subdomain	Reach
revolution.c21.com	12.48%
rebrand.c21.com	7.99%

How popular is c21.com?

Period	Global Rank	Global Rank Delta
past 3 months	427217	34185
past month	448694	-11569
past week	468141	-1481
yesterday	499404	-173448

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	612984	14203	5	-1.65%	1.5	10%
30	664139	-13748	5	2%	1.4	-0.719%
7	701596	30627	4	-7.552%	1	-9.353%
1	705113	-182228	4	30%	1	0%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	378223	43230	13	-13.11%
30	391475	-11179	13	3%
7	402141	-13910	13	2%
1	389653	-161510	1	30%

C21.com Website Safety

Overview

Last Updated: 12/27/2024

Overall result - c21.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: 03/27/2024

c21.com is safe.

Norton ConnectSafe evaluates c21.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 11/19/2016

c21.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

c21.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: 02/26/2021

c21.com is safe.

McAfee assesses c21.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 c21.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 12/27/2024

c21.com child safety is unknown.

The WOT calculates reputation of the c21.com. This reputation system receives ratings from users and information from third-party sources, assesses the c21.com for safety features and confirms, whether c21.com is suitable for children.

SSL Information

SSL Checker Tool

WARNING!	Certificate download error. Previous scan results are shown below.
Domain	Unknown
Issuer Organization	Unknown
Issuer	Unknown
Algorithm	Unknown
Valid form	Unknown
Expiration	Unknown
Signed	No information
Additional Domains

C21.com Rank History

Alexa Rank shows how popular c21.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If c21.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 c21.com and pageviews on c21.com over the past 3 months.

C21.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 16509

ASN Title: AMAZON-02 - Amazon.com, Inc., US

Last Update: 07/30/2024

#
# 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: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509

OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4

OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN

RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-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.
#

C21.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: C21.COM
Registry Domain ID: 287757_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.corporatedomains.com
Registrar URL: http://cscdbs.com
Updated Date: 2024-03-07T06:12:32Z
Creation Date: 1995-03-10T05:00:00Z
Registry Expiry Date: 2025-03-11T04:00:00Z
Registrar: CSC Corporate Domains, Inc.
Registrar IANA ID: 299
Registrar Abuse Contact Email: domainabuse@cscglobal.com
Registrar Abuse Contact Phone: 8887802723
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS-1182.AWSDNS-19.ORG
Name Server: NS-1619.AWSDNS-10.CO.UK
Name Server: NS-236.AWSDNS-29.COM
Name Server: NS-788.AWSDNS-34.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-10-10T02:14:06Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
c21.com	3.13.43.138	60
c21.com	3.13.255.142	60

Host	MX Record	Priority	TTL
c21.com	c21-com.mail.protection.outlook.com	10	300

Host	NS Record	TTL
c21.com	ns-1182.awsdns-19.org	172800
c21.com	ns-1619.awsdns-10.co.uk	172800
c21.com	ns-236.awsdns-29.com	172800
c21.com	ns-788.awsdns-34.net	172800

Host	TXT Record	TTL
c21.com	MS=ms57779765	1200
c21.com	v=spf1 ip4:64.37.197.6 ip4:64.37.197.45 ip4:63.240.103.0/26 ip4:216.136.162.64/26 ip4:64.37.197.198 mx a:svvssmtp.century21.com include:spf.usa.net include:sendgrid.net include:spf.protection.outlook.com ~all	1200

ns-236.awsdns-29.com
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400

C21.com HTML Check

HTML Validation Tool

Errors

Bogus comment.

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

Attribute “href” not allowed on element “button” at this point.

Duplicate ID “account-my-favorites”.

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

The element “button” must not appear as a descendant of the “a” element.

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

Bad value “/dependencies/defaultJS.js?__VERSION={{{TIME_REPLACE}}}” for attribute “src” on element “script”: Illegal character in query: “{” is not allowed.

Bad value “//tracking.listhub.net/scripts/la.js?__VERSION={{{TIME_REPLACE}}}” for attribute “src” on element “script”: Illegal character in query: “{” is not allowed.

Bad value “//my.century21.com/dynamicDependencies/dynamic.js?id=&__VERSION={{{TIME_REPLACE}}}” for attribute “src” on element “script”: Illegal character in query: “{” is not allowed.

Bad value “/js/newPortal.js?__VERSION={{{TIME_REPLACE}}}” for attribute “src” on element “script”: Illegal character in query: “{” is not allowed.

Bad value “/dependencies/defaultCSS.css?__VERSION={{{TIME_REPLACE}}}” for attribute “href” on element “link”: Illegal character in query: “{” is not allowed.

Element “script” must not have attribute “defer” unless attribute “src” is also specified.

Element “script” must not have attribute “async” unless attribute “src” is also specified.

Warnings

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

The document is not mappable to XML 1.0 due to a trailing hyphen in a comment.

The first occurrence of ID “account-my-favorites” was here.

C21.com Desktop Performance

Last tested: 12/03/2018

Desktop Speed

72%

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

Enable compression

Minify CSS

Leverage browser caching

Minify JavaScript

Reduce server response time

Minify HTML

Optimize images

Desktop Resource Breakdown

Total Resources	81
Number of Hosts	32
Static Resources	37
JavaScript Resources	22
CSS Resources	3

C21.com Mobile Insights

Last tested: 12/03/2018

Mobile Usability

99%

Size tap targets appropriately

Mobile Speed

56%

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

Enable compression

Minify CSS

Leverage browser caching

Minify JavaScript

Reduce server response time

Optimize images

Minify HTML

Mobile Resource Breakdown

Total Resources	75
Number of Hosts	28
Static Resources	37
JavaScript Resources	22
CSS Resources	3

C21.com Common Typos

www.c21.com
www.c21.net
www.c21.org
www.c21.info
www.c21.biz
www.c21.us
www.c21.mobi
www.21.com
www.c21.com
www.x21.com
www.cx21.com
www.xc21.com
www.d21.com
www.cd21.com
www.dc21.com
www.f21.com
www.cf21.com
www.fc21.com
www.v21.com
www.cv21.com
www.vc21.com
www.c1.com
www.c2.com
www.c21.con

C21.com Residential Real Estate Listings - Homes for Sale by Real Estate Agents | CENTURY 21

Use CENTURY 21 to find real estate property listings, houses for sale, real estate agents, and a mortgage calculator. We can assist you with buying or...

C21.com Overview

C21.com Rank Summary

C21.com Website Safety

C21.com Rank History

C21.com Hosting Information

C21.com Domain Registration and Settings

C21.com HTML Check

C21.com Desktop Performance

C21.com Mobile Insights

C21.com Similar Audits

C21.com Common Typos