Costerdiamonds.com Royal Coster Diamonds - 175 years of diamond craftsmanship

The worlds oldest and most trusted diamond factory. We have the largest diamond stock of Europe and our craftsmen and women can create any piece you d...

Costerdiamonds.com Quick Summary

Status

Offline

Server IP address resolved: No

Http response code: None

Last Checked: 05/03/2024

Costerdiamonds.com traffic estimate is about 263 unique visitors and 526 pageviews per day. The approximated value of costerdiamonds.com is 5,840 USD. Every unique visitor makes about 2 pageviews on average.

Alexa Traffic Rank estimates that costerdiamonds.com is ranked number 6,842 in the world.

Costerdiamonds.com is registered under .COM top-level domain. Check other websites in .COM zone.

During the last check (June 27, 2019) costerdiamonds.com has an expired SSL certificate (expired on July 31, 2019), please click the “Refresh” button for SSL Information at the Safety Information section.

In accordance with Google Safe Browsing, Google Safe Search and Symantec costerdiamonds.com is pretty a safe domain.

Relying on Google Mobile-Friendly test costerdiamonds.com is well optimized for mobile and tablet devices.

Costerdiamonds.com General Information

Costerdiamonds.com Audience Geography

Where are website visitors coming from?

Visitors
Pageviews
Ranks

Country	Visitors

Costerdiamonds.com Traffic Distribution

Where do visitors go on costerdiamonds.com?

Subdomain Traffic
Views per User
Subdomain Reach

Subdomain	Pageviews
costerdiamonds.com	100%

Subdomain	Views per User
costerdiamonds.com	3

Costerdiamonds.com Popularity

How popular is costerdiamonds.com?

Global Rank
Pageviews
Reach

Period	Global Rank	Global Rank Delta
past 3 months	1288032	1956
past month	2200166	839216
past week	4891269	2176416

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1642856	85832	1	-4.785%	2	-11.6%
30	1993677	235310	1	-15.08%	3	100%
7	5116391	3187520	0	-91.503%	1	-75.787%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	1199024	-36480	3	7%
30	2384252	1132975	1	-57.937%
7	4724059	1137506	3	-64.865%

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Costerdiamonds.com Safety Information

Rankchart Summary

Safe

Updated: 05/03/2024

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

Safe

Updated: 03/23/2024

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Norton ConnectSafe evaluates websites for any unsafe and inapropriate content. The results are important for families with young children.

Google Safe Search

Safe

Updated: 10/02/2017

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SafeSearch works as a parental control tool to filter out any content that might be inappropriate for your children.

Google Safe Browsing

Safe

Malware not found

Phishing not detected

Unwanted software not found

Harmfull applications not found

Updated: 01/09/2019

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Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

McAfee® WebAdvisor

Safe

Updated: 02/27/2021

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

Web of Trust

Not Checked

Updated: 05/03/2024

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

Costerdiamonds.com SSL Information

Information about SSL/TLS certificates

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Domain	www.costerdiamonds.com
Issuer Organization	Unknown
Issuer	Let's Encrypt Authority X3
Algorithm	RSA-SHA256
Valid form	05/02/2019
Expiration	07/31/2019
Signed	Certificate is not self signed
Additional Domains	ams.costerdiamonds.com costerdiamonds.com meetings.costerdiamonds.com payments.costerdiamonds.com www.costerdiamonds.com

SSL Checker

Costerdiamonds.com Server Information

Costerdiamonds.com Server Location

Where website hosting server is located?

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Costerdiamonds.com ASN Information

Information about IP address owner

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ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Updated: 02/22/2024

Raw ASN data:

#
# 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.
#

Geolocation

ASN Lookup

Costerdiamonds.com Domain Name Information

Costerdiamonds.com DNS Information

Domain name service records

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A

Host	A Record	TTL

Costerdiamonds.com Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

Whois

DNS Lookup

Costerdiamonds.com HTML Validation

Costerdiamonds.com W3C HTML Markup Validation

HTML markup errors and warnings

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Errors:

Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.

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

The “font” element is obsolete. Use CSS instead.

CSS: “italics”: Parse Error.

Attribute “webkit-playsinline” not allowed on element “video” at this point.

Duplicate ID “video”.

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

Element “p” not allowed as child of element “h5” in this context. (Suppressing further errors from this subtree.)

Bad value “nope” for attribute “autocomplete” on element “input”: The string “nope” is not a valid autofill field name.

Bad value “mailto:support@costerdiamonds.com?subject=I am interested in'The Classic with a Twist' (#1231505)” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

End tag “br”.

Duplicate ID “product-gmt-details”.

Bad value “mailto:support@costerdiamonds.com?subject=I am interested in'Twisted Pave Solitaire Diamond Ring' (#1262041)” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

Bad value “mailto:support@costerdiamonds.com?subject=I am interested in'The Minimalist Diamond Ring' (#1283026)” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

Bad value “mailto:support@costerdiamonds.com?subject=I am interested in'Leverback Hoop Diamond Earrings with Pave' (#1730180)” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

Bad value “mailto:support@costerdiamonds.com?subject=I am interested in'Loose Open Braided Diamond Bracelet' (#3020039)” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

Bad value “mailto:support@costerdiamonds.com?subject=I am interested in'Sunshine Diamond Pendant with Double Halo' (#2020083)” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

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

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

Stray start tag “script”.

The value of the “for” attribute of the “label” element must be the ID of a non-hidden form control.

Warnings:

Consider avoiding viewport values that prevent users from resizing documents.

The first occurrence of ID “video” was here.

Empty heading.

The first occurrence of ID “product-gmt-details” was here.

The “type” attribute is unnecessary for JavaScript resources.

HTML Validator

Costerdiamonds.com Desktop Performance

How Well Costerdiamonds.com Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

30%

Enable compression

Reduce server response time

Minify JavaScript

Leverage browser caching

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

Minify CSS

Optimize images

Prioritize visible content

Minify HTML

Updated: 10/24/2015

Costerdiamonds.com Mobile Performance

How Optimized Is Costerdiamonds.com for Mobile Devices?

Tips on speeding up mobile site performance

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Usability
Speed
Resource Breakdown

Usability

99%

Size tap targets appropriately

Updated: 08/19/2019

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Costerdiamonds.com URL Typos

Most common user URL mistypes for costerdiamonds.com

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Total Resources	126
Number of Hosts	18
Static Resources	45
JavaScript Resources	49
CSS Resources	32

CSS	621.7 KBytes
Images	1.4 MBytes
HTML	112.4 KBytes
JavaScript	1.3 MBytes
Other	153.8 KBytes

Total Resources	124
Number of Hosts	31
Static Resources	38
JavaScript Resources	66
CSS Resources	6

Text	296.0 Bytes
CSS	530.9 KBytes
Images	728.8 KBytes
HTML	136.9 KBytes
JavaScript	4.4 MBytes
Other	26.6 KBytes