Duo.nl DUO - Particulier

Informatie voor studenten, terugbetalers en leraren. Informatie over studiefinanciering, studieschuld, reizen, lesgeld, diploma’s en staatsexamens.

Duo.nl Quick Summary

Status

Online

Server IP address resolved: Yes

Http response code: 200

Response time: 2.24 sec.

Last Checked: 04/19/2024

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Duo.nl traffic estimate is about 3,513 unique visitors and 20,200 pageviews per day. The approximated value of duo.nl is 350,400 USD. Every unique visitor makes about 5.75 pageviews on average.

Alexa Traffic Rank estimates that duo.nl is ranked number 8,522 in the world, while most of its traffic comes from Netherlands, where it occupies as high as 212 place.

It’s good for duo.nl that their hosting company SURFnet bv is located in Netherlands, as that provides the majority of their visitors to benefit from the faster page load time. See the list of other websites hosted by SURFnet bv.

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

During the last check (December 16, 2021) duo.nl has an expired SSL certificate issued by QuoVadis Trustlink B.V. (expired on August 11, 2022), please click the “Refresh” button for SSL Information at the Safety Information section. Check other websites using SSL certificates issued by QuoVadis Trustlink B.V..

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

Relying on Google Mobile-Friendly test duo.nl is well optimized for mobile and tablet devices, however website page loading time may be improved.

Duo.nl General Information

Duo.nl Audience Geography

Where are website visitors coming from?

Visitors
Pageviews
Ranks

Country	Visitors
Netherlands NL	90%
Germany DE	1.2%
United States US	0.9%
United Kingdom GB	0.9%
Sweden SE	0.6%
Other	6.3%

Country	Rank
Netherlands NL	212
Sweden SE	20877
Germany DE	67104
United Kingdom GB	75601
United States US	332634

Duo.nl Traffic Distribution

Where do visitors go on duo.nl?

Subdomain Traffic
Views per User
Subdomain Reach

Subdomain	Pageviews
duo.nl	43.26%
mijn.duo.nl	41.04%
siam.duo.nl	12.46%
apps.duo.nl	2.18%
tools.duo.nl	0.56%
other	0.51%

Subdomain	Views per User
apps.duo.nl	3.6
mijn.duo.nl	3.5
duo.nl	2.6
tools.duo.nl	2
siam.duo.nl	1.1

Subdomain	Reach
duo.nl	93.79%
mijn.duo.nl	66.01%
siam.duo.nl	64.61%
apps.duo.nl	3.4%
tools.duo.nl	1.5%

Duo.nl Popularity

How popular is duo.nl?

Global Rank
Pageviews
Reach

Period	Global Rank	Global Rank Delta
past 3 months	32012	-8396
past month	31658	4820
past week	30175	40
yesterday	23909	-3249

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	22835	-7807	309	38%	5.75	10%
30	22885	3750	311	-17.04%	5.7	-1.9%
7	22422	89	32	-0.613%	5.5	-1.26%
1	17935	-2692	43	10%	5.7	1%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	38632	-9122	199	24%
30	38141	5462	20	-15.43%
7	36361	-73	22	0.6%
1	29315	-3908	28	10%

Press rescan to collect fresh statistics for this website...

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Duo.nl Safety Information

Rankchart Summary

Safe

Updated: 04/19/2024

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: 03/21/2024

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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: 02/09/2019

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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: 02/22/2021

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

Web of Trust

Child safety is very good

Updated: 01/09/2019

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

Duo.nl SSL Information

Information about SSL/TLS certificates

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Domain	www.duo.nl
Issuer Organization	QuoVadis Trustlink B.V.
Issuer	QuoVadis PKIoverheid Server CA 2020
Algorithm	RSA-SHA256
Valid form	08/11/2021
Expiration	08/11/2022
Signed	Certificate is not self signed
Additional Domains	www.duo.nl duo.nl data.duo.nl mijnduo.nl www.mijnduo.nl diplomaregister.nl www.diplomaregister.nl examenloket.nl www.examenloket.nl bron.nl www.bron.nl bezwaarschriftenocw.nl www.bezwaarschriftenocw.nl rio-kennisbank.duo.nl mijndiploma.nl www.mijndiploma.nl mijndiplomas.nl www.mijndiplomas.nl

SSL Checker

Duo.nl Server Information

Duo.nl Server Location

Where website hosting server is located?

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Duo.nl ASN Information

Information about IP address owner

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ASN ID: 1103

ASN Title: SURFnet bv

Updated: 10/03/2023

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 'AS1101 - AS1200'

as-block: AS1101 - AS1200
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: 2002-08-22T14:57:50Z
last-modified: 2014-02-24T13:15:15Z
source: RIPE

% Information related to 'AS1103'

% Abuse contact for 'AS1103' is 'cert@surfnet.nl'

aut-num: AS1103
as-name: SURFNET-NL
descr: SURFnet, The Netherlands
org: ORG-Sb3-RIPE
remarks: For security/abuse issues:
remarks: "mnt-irt: irt-SURFnet-CERT" or
remarks: contact
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export: to AS25152 announce ANY
export: to AS25182 announce AS-SURFNET
export: to AS25220 announce AS-SURFNET
export: to AS25459 announce AS-SURFNET
export: to AS25542 announce AS-SURFNET
export: to AS25596 announce AS-SURFNET
export: to AS28685 announce AS-SURFNET
export: to AS28757 announce AS-SURFNET
export: to AS28788 announce AS-SURFNET
export: to AS28876 announce AS-SURFNET
export: to AS28929 announce AS-SURFNET
export: to AS29075 announce AS-SURFNET
export: to AS29208 announce AS-SURFNET
export: to AS29263 announce AS-SURFNET
export: to AS29396 announce AS-SURFNET
export: to AS29462 announce AS-SURFNET
export: to AS30094 announce AS-SURFNET
export: to AS30132 announce AS-SURFNET
export: to AS30781 announce AS-SURFNET
export: to AS30889 announce AS-SURFNET
export: to AS31019 announce AS-SURFNET
export: to AS31027 announce AS-SURFNET
export: to AS31216 announce AS-SURFNET
export: to AS31477 announce AS-SURFNET
export: to AS31500 announce AS-SURFNET
export: to AS31529 announce AS-SURFNET
export: to AS31800 announce AS-SURFNET
export: to AS32787 announce AS-SURFNET
export: to AS32934 announce AS-SURFNET
export: to AS33891 announce AS-SURFNET
export: to AS33915 announce AS-SURFNET
export: to AS34106 announce AS-SURFNET
export: to AS34141 announce AS-SURFNET
export: to AS34177 announce AS-SURFNET
export: to AS34288 announce AS-SURFNET
export: to AS34305 announce AS-SURFNET
export: to AS34307 announce AS-SURFNET
export: to AS34309 announce AS-SURFNET
export: to AS34655 announce AS-SURFNET
export: to AS34762 announce AS-SURFNET
export: to AS34968 announce AS-SURFNET
export: to AS35332 announce AS-SURFNET
export: to AS35745 announce AS-SURFNET
export: to AS36408 announce AS-SURFNET
export: to AS36692 announce AS-SURFNET
export: to AS37100 announce AS-SURFNET
export: to AS37271 announce AS-SURFNET
export: to AS37468 announce AS-SURFNET
export: to AS39309 announce AS-SURFNET
export: to AS39326 announce AS-SURFNET
export: to AS39647 announce AS-SURFNET
export: to AS39704 announce AS-SURFNET
export: to AS41552 announce AS-SURFNET
export: to AS41692 announce AS-SURFNET
export: to AS41695 announce AS-SURFNET
export: to AS41887 announce AS-SURFNET
export: to AS41913 announce AS-SURFNET
export: to AS42165 announce AS-SURFNET
export: to AS42385 announce AS-SURFNET
export: to AS42707 announce AS-SURFNET
export: to AS43437 announce AS-SURFNET
export: to AS44654 announce AS-SURFNET
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export: to AS47886 announce AS-SURFNET
export: to AS48283 announce AS-SURFNET
export: to AS49544 announce AS-SURFNET
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export: to AS50056 announce AS-SURFNET
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export: to AS50295 announce AS-SURFNET
export: to AS51088 announce AS-SURFNET
export: to AS54113 announce AS-SURFNET
export: to AS57866 announce AS-SURFNET
export: to AS57976 announce AS-SURFNET
export: to AS59964 announce AS-SURFNET
export: to AS60144 announce AS-SURFNET
export: to AS62402 announce AS-SURFNET
export: to AS197000 announce AS-SURFNET
export: to AS197219 announce AS-SURFNET
export: to AS199524 announce AS-SURFNET
export: to AS203769 announce AS-SURFNET
export: to AS206130 announce AS-SURFNET
export: to AS206350 announce AS-SURFNET
admin-c: SNS1-RIPE
tech-c: SNS1-RIPE
status: LEGACY
mnt-by: RIPE-NCC-LEGACY-MNT
mnt-by: AS1103-MNT
created: 2002-09-23T12:44:58Z
last-modified: 2018-06-12T11:42:55Z
source: RIPE

organisation: ORG-Sb3-RIPE
org-name: SURFnet bv
org-type: LIR
address: P.O. Box 19035
address: 3501 DA
address: Utrecht
address: NETHERLANDS
phone: +31887873000
admin-c: HT3384-RIPE
admin-c: MK512-RIPE
admin-c: SNS1-RIPE
admin-c: JK9622-RIPE
admin-c: RVR19-RIPE
admin-c: WB311-RIPE
admin-c: NO17-RIPE
admin-c: RS957-RIPE
admin-c: SM12780-RIPE
abuse-c: SNS1-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: SN-LIR-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: SN-LIR-MNT
created: 2004-04-17T11:43:29Z
last-modified: 2017-08-25T09:59:29Z
source: RIPE # Filtered

role: SURFnet Network Services
address: Kantoren Hoog Overborch (Hoog Catharijne)
address: Moreelsepark 48, 3511 EP Utrecht
address: Postbus 19035, 3501 DA Utrecht
phone: +31 88 7873000
admin-c: JK9622-RIPE
tech-c: NO17-RIPE
tech-c: JK9622-RIPE
tech-c: MK512-RIPE
nic-hdl: SNS1-RIPE
abuse-mailbox: cert@surfnet.nl
mnt-by: AS1103-MNT
created: 2002-07-09T10:06:06Z
last-modified: 2017-08-25T12:01:47Z
source: RIPE # Filtered

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

Geolocation

ASN Lookup

Duo.nl Domain Name Information

Duo.nl DNS Information

Domain name service records

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A
MX
NS
TXT
SOA

Host	A Record	TTL
duo.nl	194.171.77.135	900

Host	MX Record	Priority	TTL
duo.nl	grnms101.duo.nl	10	900
duo.nl	relay.surfnet.nl	100	900
duo.nl	grnms102.duo.nl	10	900

Host	NS Record	TTL
duo.nl	ns2.surfnet.nl	900
duo.nl	ns1.duo.nl	900

Host	TXT Record	TTL
duo.nl	v=spf1 mx a ip4:52.19.108.181 ip4:62.112.225.180 ip4:89.221.178.154 ip4:212.159.201.77 ip4:212.159.201.78 ~all	900
duo.nl	MS=2A35729DF7B6879605A380199134229FA98192DC	900

Duo.nl Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

Whois

DNS Lookup

Duo.nl HTML Validation

Duo.nl W3C HTML Markup Validation

HTML markup errors and warnings

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Warnings:

The “type” attribute is unnecessary for JavaScript resources.

The “banner” role is unnecessary for element “header”.

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

Empty heading.

The first occurrence of ID “search_fat” was here.

Errors:

The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.

Duplicate ID “search_fat”.

Bad value “https://apps.duo.nl/SRVS/CGI-BIN/WEBCGI.EXE?New,Kb=Kennisbank,Company={DBD42CAE-B941-4CF4-960D-5F5C917B6281},decision_tree=ref(start),t=startup” for attribute “href” on element “a”: Illegal character in query: “{” is not allowed.

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

Bad value “#deze wordt vervangen door feedback.js op basis van (#enquetebut) #” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

The “aria-describedby” attribute must point to an element in the same document.

HTML Validator

Duo.nl Desktop Performance

How Well Duo.nl Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

54%

Enable compression

Optimize images

Leverage browser caching

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

Avoid landing page redirects

Minify JavaScript

Minify HTML

Minify CSS

Updated: 12/12/2019

Duo.nl Mobile Performance

How Optimized Is Duo.nl 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: 12/11/2019

Duo.nl Nearest Competitors

Estimated Nearest Competitors Of Duo.nl

semantic-ui.com
hansvoss.online
vlib.org
news-postseven.com
tvmao.com
tastemade.com
targetjobs.co.uk
scouts.org.uk
kidneyfund.org
fragrancex.com
duo.nl
s*******c.com
redandblack.com
quip.com
nirandfar.com
pdfescape.com
softgarden.io
sitra.fi
modernamuseet.se
freeconferencecall.com
artbreeder.com
opinionstage.com

Duo.nl URL Typos

Most common user URL mistypes for duo.nl

www.duo.com
www.duo.net
www.duo.org
www.duo.info
www.duo.biz
www.duo.us
www.duo.mobi
www.uo.nl
www.duo.nl
www.xuo.nl
www.dxuo.nl
www.xduo.nl
www.suo.nl
www.dsuo.nl
www.sduo.nl
www.euo.nl
www.deuo.nl
www.eduo.nl
www.ruo.nl
www.druo.nl
www.rduo.nl
www.fuo.nl
www.dfuo.nl
www.fduo.nl
www.cuo.nl
www.dcuo.nl
www.cduo.nl
www.do.nl
www.dyo.nl
www.duyo.nl
www.dyuo.nl
www.dho.nl
www.duho.nl
www.dhuo.nl
www.djo.nl
www.dujo.nl
www.djuo.nl
www.dio.nl
www.duio.nl
www.diuo.nl
www.du.nl
www.dui.nl
www.duoi.nl
www.duk.nl
www.duok.nl
www.duko.nl
www.dul.nl
www.duol.nl
www.dulo.nl
www.dup.nl
www.duop.nl
www.dupo.nl

Total Resources	43
Number of Hosts	9
Static Resources	30
JavaScript Resources	23
CSS Resources	5

CSS	171.4 KBytes
Images	270.7 KBytes
HTML	65.6 KBytes
JavaScript	751.2 KBytes
Other	261.0 KBytes

Total Resources	40
Number of Hosts	8
Static Resources	29
JavaScript Resources	21
CSS Resources	5

CSS	171.4 KBytes
Images	248.9 KBytes
HTML	65.6 KBytes
JavaScript	610.1 KBytes
Other	261.0 KBytes