opencenter.org - The Open Center – Holistic Teaching & Trainings Since 1984

Quick Summary

Online Status

Offline

Server IP address resolved: No
Http response code: None
Last Checked: 03/15/2023

Over the time opencenter.org has been ranked as high as 48,745 in the world, while most of its traffic comes from United States, where it reached as high as 176,887 position.

Opencenter.org receives about 490 unique visitors and 931 pageviews per day. The estimated value of opencenter.org is 8,760 USD. Each unique visitor makes about 1.9 pageviews on average.

Opencenter.org is registered under .ORG top-level domain. Check other websites in .ORG zone.

At the time of the last check (October 16, 2023) opencenter.org has an expired SSL certificate issued by Let's Encrypt (expired on December 24, 2023). Check other websites using SSL certificates issued by Let's Encrypt.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust opencenter.org is quite a safe domain.

Mobile-Friendly test indicates that opencenter.org is well optimized for mobile and tablet devices, however website page loading time could be improved.

Opencenter.org General Information

Global Rank

728,824

Average Load Time

1.84sec

Links In Count

289

Website Value

$8,760

Audience Geography. Where are opencenter.org visitors located?

Country	Rank
United States US	176887

Country	Percent of Pageviews
United States US	79.4%
Other	20.4%

Country	Percent of Visitors
United States US	79.5%
Other	20.5%

Where do visitors go on opencenter.org?

Subdomain	Pageviews
opencenter.org	84.29%
other	15.71%

Subdomain	Pageviews per User
opencenter.org	1.6

Subdomain	Reach
opencenter.org	96.53%

How popular is opencenter.org?

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	703206	174203	59	-29.33%
30	675868	-135880	63	30%
7	780818	171020	6	-26.04%

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	885132	365958	3	-50.632%	1.9	-30.47%
30	868139	-143491	3	30%	1.9	0.5%
7	753670	-49423	4	9%	3	50%

Period	Global Rank	Global Rank Delta
past 3 months	728824	226111
past month	704030	-129585
past week	726210	89338

Opencenter.org Alexa Rank History

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

Opencenter.org Safety Information

Overview

Last Updated: 05/01/2024

Overall result - "opencenter.org" 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: 03/29/2024

opencenter.org is safe.

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

Google Safe Search

Last Updated: 12/09/2016

opencenter.org 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

Malware not found at "opencenter.org".
"opencenter.org" is not a phishing page.
"opencenter.org" does not install unwanted software.
"opencenter.org" does not contain harmfull applications.
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: 02/28/2021

opencenter.org is safe.

McAfee assesses opencenter.org 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 opencenter.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

opencenter.org child safety isgood.

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

SSL Information

SSL Checker Tool

Domain	opencenter.org
Issuer Organization	Let's Encrypt
Issuer	R3
Algorithm	RSA-SHA256
Valid form	09/25/2023
Expiration	12/24/2023
Signed	Certificate is not self signed
Additional Domains	opencenter.org www.opencenter.org

Opencenter.org Server Information

Server Location

Geolocation Tool

New York City

New York

United States

ASN Information

ASN Lookup Tool

ASN ID: 40021
ASN Title: CONTABO, US

Last Update: 10/15/2023

ASN Whois

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2020, American Registry for Internet Numbers, Ltd.
#

ASNumber: 40021
ASName: CONTABO
ASHandle: AS40021
RegDate: 2020-01-30
Updated: 2020-01-30
Ref: https://rdap.arin.net/registry/autnum/40021

OrgName: Contabo Inc.
OrgId: CONTA-48
Address: 710 N Tucker Blvd. STE 420
City: St. Louis
StateProv: MO
PostalCode: 63101
Country: US
RegDate: 2019-12-23
Updated: 2020-02-17
Ref: https://rdap.arin.net/registry/entity/CONTA-48

OrgTechHandle: CONTA392-ARIN
OrgTechName: Contabo Tech
OrgTechPhone: +498921268372
OrgTechEmail: wilhelm.zwalina@contabo.de
OrgTechRef: https://rdap.arin.net/registry/entity/CONTA392-ARIN

OrgRoutingHandle: CONTA393-ARIN
OrgRoutingName: Contabo NOC
OrgRoutingPhone: +498921665862
OrgRoutingEmail: sascha.wintz@contabo.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/CONTA393-ARIN

OrgAbuseHandle: CAD61-ARIN
OrgAbuseName: Contabo Abuse Department
OrgAbusePhone: +498921665862
OrgAbuseEmail: abuse@contabo.de
OrgAbuseRef: https://rdap.arin.net/registry/entity/CAD61-ARIN

OrgNOCHandle: CONTA393-ARIN
OrgNOCName: Contabo NOC
OrgNOCPhone: +498921665862
OrgNOCEmail: sascha.wintz@contabo.com
OrgNOCRef: https://rdap.arin.net/registry/entity/CONTA393-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2020, American Registry for Internet Numbers, Ltd.
#

Opencenter.org Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain Whois

Domain Name: OPENCENTER.ORG
Registry Domain ID: D2220841-LROR
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://www.networksolutions.com
Updated Date: 2020-09-22T20:45:11Z
Creation Date: 1995-08-21T04:00:00Z
Registry Expiry Date: 2021-08-20T04:00:00Z
Registrar Registration Expiration Date:
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8777228662
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: The New York Open Center
Registrant State/Province: NY
Registrant Country: US
Name Server: NS1.LINODE.COM
Name Server: NS2.LINODE.COM
Name Server: NS3.LINODE.COM
Name Server: NS4.LINODE.COM
Name Server: NS5.LINODE.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2021-06-04T21:01:08Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
opencenter.org	162.216.17.95	300

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

Host	NS Record	TTL
opencenter.org	ns4.linode.com	300
opencenter.org	ns3.linode.com	300
opencenter.org	ns2.linode.com	300
opencenter.org	ns5.linode.com	300
opencenter.org	ns1.linode.com	300

Host	TXT Record	TTL
opencenter.org	v=spf1 include:_spf.google.com a include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com include:sparkpostmail.com ~all	300

ns1.linode.com
TTL: 300
Email address: tech.opencenter.org
Serial: 2019092804
Refresh: 300
Retry: 14400
Expire: 1209600
Minimum: 300

Opencenter.org HTML Validation

HTML Validation Tool

Warnings

The “type” attribute is unnecessary for JavaScript resources.

The “type” attribute for the “style” element is not needed and should be omitted.

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Empty heading.

The first occurrence of ID “mega-menu-wrap-primary” was here.

The first occurrence of ID “mega-toggle-block-1” was here.

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

The first occurrence of ID “mega-menu-item-503” was here.

The first occurrence of ID “mega-menu-item-text-6” was here.

The first occurrence of ID “mega-menu-item-25409” was here.

The first occurrence of ID “mega-menu-item-text-7” was here.

The first occurrence of ID “mega-menu-item-25411” was here.

The first occurrence of ID “mega-menu-item-text-8” was here.

The first occurrence of ID “mega-menu-item-79” was here.

The first occurrence of ID “mega-menu-item-text-9” was here.

The first occurrence of ID “mega-menu-item-22900” was here.

The first occurrence of ID “mega-menu-item-96” was here.

The first occurrence of ID “mega-menu-item-97” was here.

The “complementary” role is unnecessary for element “aside”.

The first occurrence of ID “content_block-25391” was here.

The first occurrence of ID “content_block-25385” was here.

The first occurrence of ID “content_block-25386” was here.

The first occurrence of ID “content_block-25392” was here.

The first occurrence of ID “content_block-88408” was here.

The first occurrence of ID “content_block-30479” was here.

The first occurrence of ID “content_block-25393” was here.

The first occurrence of ID “gform_wrapper_5” was here.

The first occurrence of ID “gform_5” was here.

The first occurrence of ID “gform_fields_5” was here.

The first occurrence of ID “field_5_4” was here.

The first occurrence of ID “input_5_4” was here.

The first occurrence of ID “field_5_2” was here.

The first occurrence of ID “input_5_2” was here.

The first occurrence of ID “field_5_5” was here.

The first occurrence of ID “input_5_5” was here.

The first occurrence of ID “gfield_description__5” was here.

The first occurrence of ID “gform_submit_button_5” was here.

The first occurrence of ID “gform_target_page_number_5” was here.

The first occurrence of ID “gform_source_page_number_5” was here.

The first occurrence of ID “content_block-25383” was here.

Errors

CSS: “border-color”: Lexical error at line 3, column 28. Encountered: ";" (59), after : "#".

CSS: “border-color”: Lexical error at line 4, column 21. Encountered: "!" (33), after : "#".

CSS: “border-color”: Parse Error.

Duplicate ID “mega-menu-wrap-primary”.

Duplicate ID “mega-toggle-block-1”.

Duplicate ID “mega-menu-primary”.

Duplicate ID “mega-menu-item-503”.

Duplicate ID “mega-menu-item-text-6”.

Duplicate ID “mega-menu-item-25409”.

Duplicate ID “mega-menu-item-text-7”.

Duplicate ID “mega-menu-item-25411”.

Duplicate ID “mega-menu-item-text-8”.

Duplicate ID “mega-menu-item-79”.

Duplicate ID “mega-menu-item-text-9”.

Duplicate ID “mega-menu-item-22900”.

Duplicate ID “mega-menu-item-96”.

Duplicate ID “mega-menu-item-97”.

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

CSS: Parse Error. Style sheets should not include HTML syntax. .

CSS: “background”: The first argument to the “linear-gradient” function should be “to top”, not “top”.

CSS: Parse Error.

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

Bad value “wp_lightbox_prettyPhoto” for attribute “rel” on element “a”: The string “wp_lightbox_prettyPhoto” is not a registered keyword.

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

No space between attributes.

Duplicate ID “content_block-25391”.

Duplicate ID “content_block-25385”.

Duplicate ID “content_block-25386”.

Duplicate ID “content_block-25392”.

Duplicate ID “content_block-88408”.

Duplicate ID “content_block-30479”.

Duplicate ID “content_block-25393”.

Duplicate ID “gform_wrapper_5”.

Duplicate ID “gform_5”.

Duplicate ID “gform_fields_5”.

Duplicate ID “field_5_4”.

Duplicate ID “input_5_4”.

Duplicate ID “field_5_2”.

Duplicate ID “input_5_2”.

Duplicate ID “field_5_5”.

Duplicate ID “input_5_5”.

Duplicate ID “gfield_description__5”.

Duplicate ID “gform_submit_button_5”.

Duplicate ID “gform_target_page_number_5”.

Duplicate ID “gform_source_page_number_5”.

Duplicate ID “content_block-25383”.

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

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

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

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

Opencenter.org Desktop Insights

Desktop Page Insights Tool

Last tested: 01/26/2019

Desktop

Desktop Speed

58%

Optimize images

Leverage browser caching

Avoid landing page redirects

Reduce server response time

Minify JavaScript

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

Enable compression

Minify CSS

Desktop Resource Breakdown

Total Resources	144
Number of Hosts	18
Static Resources	51
JavaScript Resources	58
CSS Resources	45

Opencenter.org Mobile Insights

Mobile Page Insights Tool

Last tested: 01/26/2019

Mobile

Mobile Usability

99%

Size tap targets appropriately

Mobile Speed

52%

Avoid landing page redirects

Optimize images

Leverage browser caching

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

Reduce server response time

Minify JavaScript

Enable compression

Minify CSS

Mobile Resource Breakdown

Total Resources	142
Number of Hosts	18
Static Resources	49
JavaScript Resources	56
CSS Resources	45

Opencenter.org Typos

www.opencenter.com
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Opencenter.org The Open Center – Holistic Teaching & Trainings Since 1984

Quick Summary

Opencenter.org General Information

Opencenter.org Alexa Rank History

Opencenter.org Safety Information

Opencenter.org Server Information

Opencenter.org Domain Name Information

Opencenter.org HTML Validation

Opencenter.org Desktop Insights

Opencenter.org Mobile Insights

Opencenter.org Nearest Competitors

Opencenter.org Typos