Nikoli.co.jp Nikoli - The leading company of the logic puzzles

パズル通信「ニコリ」で有名なパズル出版社「ニコリ」の公式サイト。各種ペンシルパズルの紹介、オリジナルパズルの制作も承っております。

Nikoli.co.jp Quick Summary

Status

Offline

Server IP address resolved: No

Http response code: None

Last Checked: 08/24/2025

Nikoli.co.jp traffic estimate is about 405 unique visitors and 810 pageviews per day. The approximated value of nikoli.co.jp is 8,760 USD. Every unique visitor makes about 2 pageviews on average.

Alexa Traffic Rank estimates that nikoli.co.jp is ranked number 21,698 in the world.

Nikoli.co.jp server is located in United States, 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 XSERVER Xserver Inc., JP.

Nikoli.co.jp is registered under .JP top-level domain. Check other websites in .JP zone.

During the last check (July 15, 2024) nikoli.co.jp has an expired SSL certificate issued by Let's Encrypt (expired on October 11, 2024), please click the “Refresh” button for SSL Information at the Safety Information section. Check other websites using SSL certificates issued by Let's Encrypt.

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust nikoli.co.jp is pretty a safe domain.

Relying on Google Mobile-Friendly test nikoli.co.jp is well optimized for mobile and tablet devices.

Nikoli.co.jp General Information

Nikoli.co.jp Audience Geography

Where are website visitors coming from?

Country	Visitors

Nikoli.co.jp Traffic Distribution

Where do visitors go on nikoli.co.jp?

Subdomain	Pageviews

Nikoli.co.jp Popularity

How popular is nikoli.co.jp?

Period	Global Rank	Global Rank Delta
past 3 months	836023	-994472
past month	877763	-258494
past week	5807673	5369620

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1134666	-1179403	2	200%	2	-2.6%
30	1020188	-644770	3	100%	2	80%
7	5587305	5133462	0	-99.297%	2	-12.46%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	752734	-947903	55	200%
30	861566	-81969	5	20%
7	6004912	5519428	1	-99.121%

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

(Rescan now...)

Nikoli.co.jp Safety Information

Rankchart Summary

Safe

Updated: 08/24/2025

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: 03/28/2025

(Rescan now...)

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

Google Safe Search

Safe

Updated: 11/28/2016

(Rescan now...)

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

(Rescan now...)

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

(Rescan now...)

McAfee assesses nikoli.co.jp 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 nikoli.co.jp for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Child safety is very good

Updated: 01/10/2019

(Rescan now...)

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

Nikoli.co.jp SSL Information

Information about SSL/TLS certificates

(Rescan now...)

Domain	www.nikoli.co.jp
Issuer Organization	Let's Encrypt
Issuer	R10
Algorithm	RSA-SHA256
Valid form	07/13/2024
Expiration	10/11/2024
Signed	Certificate is not self signed
Additional Domains	nikoli.co.jp www.nikoli.co.jp

SSL Checker

Nikoli.co.jp Server Information

Nikoli.co.jp Server Location

Where website hosting server is located?

(Rescan now...)

Nikoli.co.jp ASN Information

Information about IP address owner

(Rescan now...)

ASN ID: 131965

ASN Title: XSERVER Xserver Inc., JP

Updated: 07/20/2025

Raw ASN data:

Geolocation

ASN Lookup

Nikoli.co.jp Domain Name Information

Nikoli.co.jp DNS Information

Domain name service records

(Rescan now...)

Host	A Record	TTL
nikoli.co.jp	162.43.120.199	3600

Host	MX Record	Priority	TTL
nikoli.co.jp	mail.nikoli.co.jp	100	3600

Host	NS Record	TTL
nikoli.co.jp	ns-1143.awsdns-14.org	172800
nikoli.co.jp	ns-1603.awsdns-08.co.uk	172800
nikoli.co.jp	ns-22.awsdns-02.com	172800
nikoli.co.jp	ns-517.awsdns-00.net	172800

Host	TXT Record	TTL
nikoli.co.jp	v=spf1 ip4:164.46.123.63 ip4:162.43.120.199 ip4:163.43.102.59 include:sv14198.xserver.jp ~all	3600

Nikoli.co.jp Whois Information

Information about registered users or assignees of an Internet resource

(Rescan now...)

Raw WHOIS data:

Whois

DNS Lookup

Nikoli.co.jp HTML Validation

Nikoli.co.jp W3C HTML Markup Validation

HTML markup errors and warnings

(Rescan now...)

Errors:

Malformed byte sequence: “a5”.

Malformed byte sequence: “ba”.

Malformed byte sequence: “eb”.

Malformed byte sequence: “bb”.

Malformed byte sequence: “ef”.

Malformed byte sequence: “b3”.

Malformed byte sequence: “ea”.

Malformed byte sequence: “c4”.

Malformed byte sequence: “ae”.

Malformed byte sequence: “bf”.

Malformed byte sequence: “f4”.

Malformed byte sequence: “c6”.

Malformed byte sequence: “c8”.

Malformed byte sequence: “eb”, “a5”.

Malformed byte sequence: “a1”.

Malformed byte sequence: “ea”, “a1”.

Malformed byte sequence: “c7”.

Malformed byte sequence: “a4”.

Malformed byte sequence: “eb”, “bd”.

Malformed byte sequence: “d0”.

Malformed byte sequence: “f8”.

Malformed byte sequence: “bc”.

Malformed byte sequence: “b0”.

Malformed byte sequence: “b5”.

Malformed byte sequence: “a3”.

Malformed byte sequence: “ef”, “a5”.

Malformed byte sequence: “eb”, “a4”.

Malformed byte sequence: “aa”.

Malformed byte sequence: “ce”.

Malformed byte sequence: “c0”.

Malformed byte sequence: “a9”.

Malformed byte sequence: “ee”, “a4”.

Malformed byte sequence: “ea”, “a4”.

Malformed byte sequence: “b9”.

Internal encoding declaration “euc-jp” disagrees with the actual encoding of the document (“utf-8”).

Malformed byte sequence: “f1”, “bc”.

Malformed byte sequence: “bd”.

Malformed byte sequence: “a8”.

Malformed byte sequence: “ef”, “a4”.

Malformed byte sequence: “e4”.

Malformed byte sequence: “d4”.

Malformed byte sequence: “cb”.

Malformed byte sequence: “f2”.

Malformed byte sequence: “b7”.

Malformed byte sequence: “a2”.

Malformed byte sequence: “b2”.

Malformed byte sequence: “c1”.

Malformed byte sequence: “b8”.

Malformed byte sequence: “ec”, “a4”.

Malformed byte sequence: “c2”.

Malformed byte sequence: “af”.

Malformed byte sequence: “ab”.

Malformed byte sequence: “e9”.

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

Stray end tag “body”.

Warnings:

Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)

HTML Validator

Nikoli.co.jp Desktop Performance

How Well Nikoli.co.jp Performs On Desktops?

Website desktop performance and usability tips

(Rescan now...)

Speed

82%

Optimize images

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

Leverage browser caching

Enable compression

Minify CSS

Minify HTML

Updated: 11/26/2019

Nikoli.co.jp Mobile Performance

How Optimized Is Nikoli.co.jp for Mobile Devices?

Tips on speeding up mobile site performance

(Rescan now...)

Usability

71%

Size content to viewport

Updated: 11/04/2019

Nikoli.co.jp Nearest Competitors

Estimated Nearest Competitors Of Nikoli.co.jp

hnsky.org
nycteachingcollaborative.org
1010wcsi.com
dobermanplanet.com
drleonards.com
listsofbests.com
unite4buy.com
channelpartner.es
nip.gl
hpage.co.in
nikoli.co.jp
msreklam.com.tr
koha-ptfs.co.uk
compromat-base.com
frontiersinzoology.com
fxcintel.com
naturalgaseurope.com
neighborhoodarchive.com
robbies.com
salesfusion.com
scrive.com
sky100.com.hk

Nikoli.co.jp URL Typos

Most common user URL mistypes for nikoli.co.jp

www.nikoli.com
www.nikoli.net
www.nikoli.org
www.nikoli.info
www.nikoli.biz
www.nikoli.us
www.nikoli.mobi
www.ikoli.co.jp
www.nikoli.co.jp
www.bikoli.co.jp
www.nbikoli.co.jp
www.bnikoli.co.jp
www.hikoli.co.jp
www.nhikoli.co.jp
www.hnikoli.co.jp
www.jikoli.co.jp
www.njikoli.co.jp
www.jnikoli.co.jp
www.mikoli.co.jp
www.nmikoli.co.jp
www.mnikoli.co.jp
www.nkoli.co.jp
www.nukoli.co.jp
www.niukoli.co.jp
www.nuikoli.co.jp
www.njkoli.co.jp
www.nijkoli.co.jp
www.nkkoli.co.jp
www.nikkoli.co.jp
www.nkikoli.co.jp
www.nokoli.co.jp
www.niokoli.co.jp
www.noikoli.co.jp
www.nioli.co.jp
www.nijoli.co.jp
www.nikjoli.co.jp
www.niioli.co.jp
www.nikioli.co.jp
www.niikoli.co.jp
www.nimoli.co.jp
www.nikmoli.co.jp
www.nimkoli.co.jp
www.niloli.co.jp
www.nikloli.co.jp
www.nilkoli.co.jp
www.niooli.co.jp
www.nikooli.co.jp
www.nikli.co.jp
www.nikili.co.jp
www.nikoili.co.jp
www.nikkli.co.jp
www.nikokli.co.jp
www.niklli.co.jp
www.nikolli.co.jp
www.nikpli.co.jp
www.nikopli.co.jp
www.nikpoli.co.jp
www.nikoi.co.jp
www.nikopi.co.jp
www.nikolpi.co.jp
www.nikooi.co.jp
www.nikoloi.co.jp
www.nikoki.co.jp
www.nikolki.co.jp
www.nikol.co.jp
www.nikolu.co.jp
www.nikoliu.co.jp
www.nikolui.co.jp
www.nikolj.co.jp
www.nikolij.co.jp
www.nikolji.co.jp
www.nikolk.co.jp
www.nikolik.co.jp
www.nikolo.co.jp
www.nikolio.co.jp

Total Resources	12
Number of Hosts	3
Static Resources	7
JavaScript Resources	1
CSS Resources	1

CSS	9.1 KBytes
Images	282.4 KBytes
HTML	4.9 KBytes
JavaScript	44.0 KBytes
Other	2.6 KBytes

Total Resources	12
Number of Hosts	3
Static Resources	7
JavaScript Resources	1
CSS Resources	1

CSS	9.1 KBytes
Images	282.3 KBytes
HTML	4.9 KBytes
JavaScript	44.0 KBytes
Other	2.6 KBytes