lorentzcenter.nl - Center for Scientific Workshops in All Disciplines

Lorentzcenter.nl Quick Summary

Status

Offline

Server IP address resolved: No

Http response code: None

Last Checked: 04/27/2024

Lorentzcenter.nl traffic estimate is about 209 unique visitors and 209 pageviews per day. The approximated value of lorentzcenter.nl is 2,920 USD. Every unique visitor makes about 1 pageviews on average.

Alexa Traffic Rank estimates that lorentzcenter.nl is ranked number 47,284 in the world.

Lorentzcenter.nl server is located in Netherlands, but, unfortunately, we cannot identify the countries where the visitors come from and thus it’s impossible to define if the distance can potentially affect the page load time. See the list of other websites hosted by Transip B.V.

Lorentzcenter.nl is registered under .NL top-level domain. Check other websites in .NL zone.

During the last check (November 22, 2019) lorentzcenter.nl has an expired SSL certificate issued by TERENA (expired on March 31, 2020), please click the “Refresh” button for SSL Information at the Safety Information section. Check other websites using SSL certificates issued by TERENA.

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust lorentzcenter.nl is pretty a safe domain.

Relying on Google Mobile-Friendly test lorentzcenter.nl isn't optimized for mobile and tablet devices. Designing your websites to be mobile friendly ensures that your pages perform well on all devices.

Lorentzcenter.nl General Information

Lorentzcenter.nl Audience Geography

Where are website visitors coming from?

Visitors
Pageviews
Ranks

Country	Visitors

Lorentzcenter.nl Traffic Distribution

Where do visitors go on lorentzcenter.nl?

Subdomain Traffic
Views per User
Subdomain Reach

Subdomain	Pageviews

Lorentzcenter.nl Popularity

How popular is lorentzcenter.nl?

Global Rank
Pageviews
Reach

Period	Global Rank	Global Rank Delta
past 3 months	3300263	2682865

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	4155510	3449824	0	-94.459%	1	-54.955%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	2886917	2267915	9	-87.688%

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Lorentzcenter.nl Safety Information

Rankchart Summary

Safe

Updated: 04/27/2024

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: 02/08/2024

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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: 02/17/2017

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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: 02/04/2021

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McAfee assesses lorentzcenter.nl 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 lorentzcenter.nl for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Child safety is very good

Updated: 01/11/2019

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

Lorentzcenter.nl SSL Information

Information about SSL/TLS certificates

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Domain	lorentzcenter.nl
Issuer Organization	TERENA
Issuer	TERENA SSL CA 3
Algorithm	RSA-SHA256
Valid form	03/27/2018
Expiration	03/31/2020
Signed	Certificate is not self signed
Additional Domains	lorentzcenter.nl www.lorentzcenter.nl lcserver.strw.leidenuniv.nl

SSL Checker

Lorentzcenter.nl Server Information

Lorentzcenter.nl Server Location

Where website hosting server is located?

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Lorentzcenter.nl ASN Information

Information about IP address owner

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ASN ID: 20857

ASN Title: Transip B.V.

Updated: 03/02/2024

Raw ASN data:

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.

% Information related to 'AS20485 - AS20857'

as-block: AS20485 - AS20857
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2010-05-11T11:45:37Z
last-modified: 2014-02-24T13:15:17Z
source: RIPE

% Information related to 'AS20857'

% Abuse contact for 'AS20857' is 'abuse@transip.nl'

aut-num: AS20857
as-name: TRANSIP-AS
descr: Amsterdam, the Netherlands
org: ORG-TB1-RIPE
remarks: --------------------------------------------------------
remarks: Transit connections
remarks: --------------------------------------------------------
remarks: Cogent
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export: to AS174 announce AS-TRANSIP
remarks: KPN
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export: to AS286 announce AS-TRANSIP
remarks: NTT
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export: to AS2914 announce AS-TRANSIP
remarks: --------------------------------------------------------
remarks: AMS-IX peers
remarks: --------------------------------------------------------
remarks: AMS-IX peering with AMSIX
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export: to AS1200 announce AS-TRANSIP
remarks: AMS-IX peering with AS112
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export: to AS112 announce AS-TRANSIP
remarks: AMS-IX peering with SARA
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export: to AS1126 announce AS-TRANSIP
remarks: AMS-IX peering with ASGCNet
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export: to AS24167 announce AS-TRANSIP
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remarks: AMS-IX peering with AtInet
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export: to AS34215 announce AS-TRANSIP
remarks: AMS-IX peering with BIT
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export: to AS12859 announce AS-TRANSIP
remarks: AMS-IX peering with BSO_Communication
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export: to AS31216 announce AS-TRANSIP
remarks: AMS-IX peering with Belbone
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export: to AS25596 announce AS-TRANSIP
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export: to AS8426 announce AS-TRANSIP
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remarks: AMS-IX peering with ComX
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export: to AS31529 announce AS-TRANSIP
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export: to AS6667 announce AS-TRANSIP
remarks: AMS-IX peering with Easynet
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export: to AS4589 announce AS-TRANSIP
remarks: AMS-IX peering with Edutel
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export: to AS39309 announce AS-TRANSIP
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export: to AS5466 announce AS-TRANSIP
remarks: AMS-IX peering with Enta
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export: to AS8468 announce AS-TRANSIP
remarks: AMS-IX peering with EuroAccess
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export: to AS34305 announce AS-TRANSIP
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remarks: AMS-IX peering with GTS
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export: to AS5588 announce AS-TRANSIP
remarks: AMS-IX peering with Google
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export: to AS15169 announce AS-TRANSIP
remarks: AMS-IX peering with Gyron
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export: to AS29017 announce AS-TRANSIP
remarks: AMS-IX peering with HaagNet
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export: to AS29263 announce AS-TRANSIP
remarks: AMS-IX peering with HurricaneElectric
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remarks: AMS-IX peering with IS
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export: to AS15879 announce AS-TRANSIP
remarks: AMS-IX peering with ISPServices
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export: to AS24875 announce AS-TRANSIP
remarks: AMS-IX peering with InTouch
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export: to AS8954 announce AS-TRANSIP
remarks: AMS-IX peering with Init7
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export: to AS13030 announce AS-TRANSIP
remarks: AMS-IX peering with Interconnect
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export: to AS9150 announce AS-TRANSIP
remarks: AMS-IX peering with Intermax
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export: to AS24586 announce AS-TRANSIP
remarks: AMS-IX peering with Iunxi
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export: to AS34968 announce AS-TRANSIP
remarks: AMS-IX peering with Jasmin
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export: to AS34655 announce AS-TRANSIP
remarks: AMS-IX peering with K-root
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export: to AS25152 announce AS-TRANSIP
remarks: AMS-IX peering with Kabelfoon
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remarks: AMS-IX peering with LANServices
import: from AS15600 action pref=50; accept AS-LAN or AS-LAN-PEERING-CUST
export: to AS15600 announce AS-TRANSIP
remarks: AMS-IX peering with Link11
import: from AS34309 action pref=50; accept ANY
export: to AS34309 announce AS-TRANSIP
remarks: AMS-IX peering with Luna
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export: to AS12902 announce AS-TRANSIP
remarks: AMS-IX peering with NORDUnet
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remarks: AMS-IX peering with Nerim
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remarks: AMS-IX peering with OTEGlobe
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remarks: AMS-IX peering with OVH
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export: to AS16276 announce AS-TRANSIP
remarks: AMS-IX peering with OpalTelecom
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export: to AS13285 announce AS-TRANSIP
remarks: AMS-IX peering with OpenPeering
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remarks: AMS-IX peering with PCH_AS3856
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export: to AS3856 announce AS-TRANSIP
remarks: AMS-IX peering with JansenSystemberatung
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export: to AS42184 announce AS-TRANSIP
remarks: AMS-IX peering with PCH_AS42
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remarks: AMS-IX peering with Signet
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remarks: AMS-IX peering with Solcon
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export: to AS12414 announce AS-TRANSIP
remarks: AMS-IX peering with SpeedXS
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export: to AS30925 announce AS-TRANSIP
remarks: AMS-IX peering with SurfNet
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remarks: AMS-IX peering with TNF
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export: to AS33915 announce AS-TRANSIP
remarks: AMS-IX peering with TNG
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export: to AS13101 announce AS-TRANSIP
remarks: AMS-IX peering with TelecityRedbus
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export: to AS15830 announce AS-TRANSIP
remarks: AMS-IX peering with TelefonicaDeutschland
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export: to AS6805 announce AS-TRANSIP
remarks: AMS-IX peering with Telegraaf
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export: to AS34106 announce AS-TRANSIP
remarks: AMS-IX peering with TelekomAustria
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export: to AS8447 announce AS-TRANSIP
remarks: AMS-IX peering with Telenor
import: from AS2119 action pref=50; accept ANY
export: to AS2119 announce AS-TRANSIP
remarks: AMS-IX peering with Terremark
import: from AS23148 action pref=50; accept ANY
export: to AS23148 announce AS-TRANSIP
remarks: AMS-IX peering with Tiscali
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export: to AS5615 announce AS-TRANSIP
remarks: AMS-IX peering with TitanNetworks
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export: to AS20640 announce AS-TRANSIP
remarks: AMS-IX peering with Unet
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export: to AS29396 announce AS-TRANSIP
remarks: AMS-IX peering with Versatel
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export: to AS13127 announce AS-TRANSIP
remarks: AMS-IX peering with WVFiber
import: from AS19151 action pref=50; accept ANY
export: to AS19151 announce AS-TRANSIP
remarks: AMS-IX peering with Wanadoo
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remarks: AMS-IX peering with WeDare
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remarks: AMS-IX peering with XS4ALL
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remarks: AMS-IX peering with Zeelandnet
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remarks: AMS-IX peering with Zoranet
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export: to AS21073 announce AS-TRANSIP
remarks: ------------------------------
remarks: Customers
remarks: ------------------------------
import: from AS206861 accept { 185.173.132.0/22^22-24 }
export: to AS206861 announce ANY
admin-c: IPRO1-RIPE
tech-c: IPRO1-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: TRANSIP-MNT
mnt-lower: TRANSIP-MNT
mnt-routes: TRANSIP-MNT
mnt-routes: TM6945-MNT { 194.88.230.0/23 }
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mnt-routes: BUNQ-MNT { 185.40.108.0/22 }
mnt-routes: nl-initworks-1-mnt { 185.211.248.0/24 }
created: 1970-01-01T00:00:00Z
last-modified: 2017-09-19T09:07:59Z
source: RIPE # Filtered

organisation: ORG-TB1-RIPE
org-name: Transip B.V.
org-type: LIR
address: Schipholweg 9B
address: 2316 XB
address: Leiden
address: NETHERLANDS
phone: +31715241919
fax-no: +31715241918
admin-c: IPRS1-RIPE
admin-c: RSK48-RIPE
mnt-ref: TRANSIP-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: TRANSIP-MNT
abuse-c: IPRO1-RIPE
created: 2004-04-17T11:41:26Z
last-modified: 2018-02-18T14:23:51Z
source: RIPE # Filtered

role: TransIP B.V. Admin
address: Schipholweg 9B
address: 2316 XB Leiden
address: NL
remarks: -------------------------------------------------------
remarks: Network abuse reports: abuse@transip.nl
remarks: NOC and contact details: http://www.transip.nl/contact/
remarks: -------------------------------------------------------
phone: +31 71 524 1919
fax-no: +31 71 524 1918
abuse-mailbox: abuse@transip.nl
admin-c: RSK48-RIPE
tech-c: IPRS1-RIPE
nic-hdl: IPRO1-RIPE
mnt-by: TRANSIP-MNT
created: 2003-05-10T09:33:07Z
last-modified: 2018-02-18T14:20:18Z
source: RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.91.2 (ANGUS)

Geolocation

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Lorentzcenter.nl Domain Name Information

Lorentzcenter.nl DNS Information

Domain name service records

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Host	A Record	TTL
lorentzcenter.nl	132.229.214.8	86400

Host	MX Record	Priority	TTL
lorentzcenter.nl	mx2.surfmailfilter.nl	20	86400
lorentzcenter.nl	mx1.surfmailfilter.nl	20	86400

Host	NS Record	TTL
lorentzcenter.nl	violet.leidenuniv.nl	86400
lorentzcenter.nl	indigo.leidenuniv.nl	86400

Host	TXT Record	TTL
lorentzcenter.nl	v=spf1 include:_spfout.mf.surf.net include:_spf.smtp.leidenuniv.nl ?all	86400

Lorentzcenter.nl Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

Whois

DNS Lookup

Lorentzcenter.nl HTML Validation

Lorentzcenter.nl 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>”.

Stray doctype.

Stray start tag “html”.

Start tag “head” seen but an element of the same type was already open.

Internal encoding declaration “iso-8859-1” disagrees with the actual encoding of the document (“utf-8”).

Bad value “text/html; charset=iso-8859-1” for attribute “content” on element “meta”: “iso-8859-1” is not a preferred encoding name. The preferred label for this encoding is “windows-1252”.

A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.

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

The “width” attribute on the “table” element is obsolete. Use CSS instead.

The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.

The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.

The “border” attribute on the “table” element is obsolete. Use CSS instead.

Attribute “width” not allowed on element “tr” at this point.

Attribute “height” not allowed on element “tr” at this point.

The “valign” attribute on the “tr” element is obsolete. Use CSS instead.

The “align” attribute on the “td” element is obsolete. Use CSS instead.

The “width” attribute on the “td” element is obsolete. Use CSS instead.

Attribute “border” not allowed on element “td” at this point.

The “align” attribute on the “p” element is obsolete. Use CSS instead.

Duplicate ID “wblok”.

Attribute “border” not allowed on element “tr” at this point.

Attribute “halign” not allowed on element “tr” at this point.

Attribute “halign” not allowed on element “td” at this point.

Attribute “border” not allowed on element “p” at this point.

Bad value “30px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.

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 “span” at this point.

Stray end tag “a”.

Duplicate ID “sblok”.

Bad character “ ” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.

Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).

Misplaced non-space characters inside a table.

Cannot recover after last error. Any further errors will be ignored.

Warnings:

The first occurrence of ID “wblok” was here.

The first occurrence of ID “sblok” was here.

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

HTML Validator

Lorentzcenter.nl Desktop Performance

How Well Lorentzcenter.nl Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

43%

Optimize images

Leverage browser caching

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

Enable compression

Minify HTML

Minify CSS

Updated: 08/24/2019

Lorentzcenter.nl Mobile Performance

How Optimized Is Lorentzcenter.nl for Mobile Devices?

Tips on speeding up mobile site performance

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Usability
Speed
Resource Breakdown

Usability

59%

Use legible font sizes

Size tap targets appropriately

Configure the viewport

Updated: 12/06/2019

Lorentzcenter.nl Nearest Competitors

Estimated Nearest Competitors Of Lorentzcenter.nl

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Total Resources	12
Number of Hosts	3
Static Resources	9
JavaScript Resources	1
CSS Resources	1

CSS	8.0 KBytes
Images	1.6 MBytes
HTML	13.5 KBytes
JavaScript	43.9 KBytes
Other	488.0 Bytes

Total Resources	12
Number of Hosts	3
Static Resources	9
JavaScript Resources	1
CSS Resources	1

CSS	8.0 KBytes
Images	1.6 MBytes
HTML	13.4 KBytes
JavaScript	44.0 KBytes
Other	488.0 Bytes

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