Chalcedon.edu Home

Chalcedon.edu Overview

Chalcedon.edu ranking shows that the page is at position 854,818 over the world, while the bulk of its audience is from United States, where it ranks 407,134.

In terms of rank-to-traffic ratio, chalcedon.edu has 473 unique users per day, viewing 860 pages. The rank based value of chalcedon.edu is 6,314 USD. Every user makes 1.93 pageviews on average.

Chalcedon.edu boasts a link base consisting of 644 referring domains and 766 external backlinks, as revealed by the data obtained from web network scanning.

Chalcedon.edu top-level domain belongs to .EDU domain zone. Check other webpages in .EDU zone.

According the last verification test in July 06, 2024, chalcedon.edu has an expired SSL certificate issued by Let's Encrypt (expired on August 31, 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, Symantec and Web of Trust chalcedon.edu is a fairly safe domain.

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

Chalcedon.edu Rank Summary

Global Rank

854,818

Average Load Time

2.20sec

Links In Count

389

Website Value

$5,846

Audience Geography. Where are chalcedon.edu visitors located?

Country	Visitors
United States US	47.4%
Other	53.2%

Country	Pageviews
United States US	39.4%
Other	60.6%

Country	Rank
United States US	407134

Where do visitors go on chalcedon.edu?

Subdomain	Pageviews
chalcedon.edu	100%

Subdomain	Pageviews per User
chalcedon.edu	1

Subdomain	Reach
chalcedon.edu	100%

How popular is chalcedon.edu?

Period	Global Rank	Global Rank Delta
past 3 months	854818	403600
past month	1036949	283084
past week	653998	-703881

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1074833	539952	2	-61.129%	1.8	-17.67%
30	1504329	762564	2	-62.081%	1	-59.797%
7	903764	-1036781	3	200%	1	40%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	806573	361475	5	-52.57%
30	874252	56995	47	-5.473%
7	594118	-523493	9	100%

Chalcedon.edu Website Safety

Overview

Last Updated: 12/28/2024

Overall result - chalcedon.edu 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: 03/31/2024

chalcedon.edu is safe.

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

Google Safe Search

Last Updated: 12/22/2016

chalcedon.edu 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

chalcedon.edu 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: 03/01/2021

chalcedon.edu is safe.

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

Web of Trust

Last Updated: 01/11/2019

chalcedon.edu child safety is very good.

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

SSL Information

SSL Checker Tool

Domain	chalcedon.edu
Issuer Organization	Let's Encrypt
Issuer	E1
Algorithm	ecdsa-with-SHA384
Valid form	06/02/2024
Expiration	08/31/2024
Signed	Certificate is not self signed
Additional Domains	*.chalcedon.edu chalcedon.edu

Chalcedon.edu Rank History

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

Chalcedon.edu Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 11/01/2024

#
# 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.
#

Chalcedon.edu Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

This Registry database contains ONLY .EDU domains.
The data in the EDUCAUSE Whois database is provided
by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.

The EDUCAUSE Whois database is authoritative for the
.EDU domain.

A Web interface for the .EDU EDUCAUSE Whois Server is
available at: http://whois.educause.edu

By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail. The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.

-------------------------------------------------------------

Domain Name: CHALCEDON.EDU

Registrant:
Chalcedon
POBox 158
3900 Highway 4
Vallecito, CA 95251
USA

Administrative Contact:
Mark Rushdoony
Chalcedon
P.O. Box 158
3900 Highway 4
Vallecito, CA 95251
USA
+1.2097364365
mark@chalcedon.edu

Technical Contact:
Jill Rouse
Chalcedon Foundation
P.O. Box 158
Vallecito, CA 95251
USA
+1.1209736436512
orders@chalcedon.edu

Name Servers:
JO.NS.CLOUDFLARE.COM
HENRY.NS.CLOUDFLARE.COM

Domain record activated: 03-May-1995
Domain record last updated: 01-May-2024
Domain expires: 31-Jul-2025

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

Chalcedon.edu HTML Check

HTML Validation Tool

Errors

Bad value “https://fonts.googleapis.com/css?family=Open+Sans:400,400i,600,600i,700|Sorts+Mill+Goudy” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.

A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.

Attribute “v-cloak” not allowed on element “div” at this point.

Attribute “v-model” not allowed on element “input” at this point.

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

Attribute “v-if” not allowed on element “div” at this point.

Attribute “v-for” not allowed on element “div” at this point.

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

Attribute “v-html” not allowed on element “a” at this point.

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

Attribute “v-show” not allowed on element “div” at this point.

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

Attribute “v-show” not allowed on element “button” at this point.

Attribute “if” not allowed on element “template” at this point.

Attribute “v-show” not allowed on element “span” at this point.

Attribute “:data-srcset” not allowed on element “img” at this point.

Element “img” is missing required attribute “src”.

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

Attribute “v-html” not allowed on element “p” at this point.

Attribute “v-else-if” not allowed on element “div” at this point.

Attribute “:class” not allowed on element “li” at this point.

Attribute “v-for” not allowed on element “li” at this point.

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

Attribute “:class” not allowed on element “aside” at this point.

Attribute “v-if” not allowed on element “template” at this point.

Attribute “v-else-if” not allowed on element “template” at this point.

Warnings

Attribute “@keyup” is not serializable as XML 1.0.

Attribute “:href” is not serializable as XML 1.0.

Attribute “@click” is not serializable as XML 1.0.

Attribute “:class” is not serializable as XML 1.0.

Empty heading.

Attribute “:data-srcset” is not serializable as XML 1.0.

Attribute “:name” is not serializable as XML 1.0.

Attribute “:value” is not serializable as XML 1.0.

Attribute “@change” is not serializable as XML 1.0.

Attribute “:model” is not serializable as XML 1.0.

Attribute “:facet-name” is not serializable as XML 1.0.

Attribute “:parent-is-refined” is not serializable as XML 1.0.

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

Chalcedon.edu Desktop Performance

Last tested: 06/19/2019

Desktop Speed

61%

Optimize images

Leverage browser caching

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

Minify JavaScript

Reduce server response time

Minify HTML

Desktop Resource Breakdown

Total Resources	56
Number of Hosts	12
Static Resources	35
JavaScript Resources	14
CSS Resources	3

Chalcedon.edu Mobile Insights

Last tested: 07/08/2019

Mobile Usability

99%

Size tap targets appropriately

Mobile Speed

52%

Optimize images

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

Leverage browser caching

Minify JavaScript

Reduce server response time

Minify HTML

Mobile Resource Breakdown

Total Resources	56
Number of Hosts	13
Static Resources	35
JavaScript Resources	14
CSS Resources	3

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Chalcedon.edu Home

Chalcedon.edu Overview

Chalcedon.edu Rank Summary

Chalcedon.edu Website Safety

Chalcedon.edu Rank History

Chalcedon.edu Hosting Information

Chalcedon.edu Domain Registration and Settings

Chalcedon.edu HTML Check

Chalcedon.edu Desktop Performance

Chalcedon.edu Mobile Insights

Chalcedon.edu Similar Audits

Chalcedon.edu Common Typos