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4book.org is a safe website about "4book.org" in класс category. The server is running at ip address and there is a secure connection certificate between the website and the visitor. When we did a security search, no viruses or spam were detected on web page. 4book have daily 38K and monthly 1.1M unique visitors from Ukraine, Netherlands and United Kingdom. While 26% of users browse the site for a long time, 74% exit immediately. Also, 62% of visitors come from search engines such as Google, Bing, Yandex. According to our financial situation analysis, this website earns an estimated daily $170, weekly $729 and monthly $5K from online advertising. If you want to buy this domain, you need to revise $33425. Because the value of the website can range from at least $23219 to $43631. The vshkole.com, gdzonline.net, pidruchnyk.com.ua, ukrdz.in.ua similar & alternative web sites to 4book.org.

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4book Server Status History

DateServer StatusSpeed

Search Metrics

математика 4 класс богданович
русский язык 4 класс самонова
математика 3 класс богданович задача 22

☁ Page Metrics

  1. класс 14%
  2. учебники 2%
  3. гдз 2%
  4. решебники 2%
  5. все 1%
  6. авторское 1%
  7. підручники 1%
  8. онлайн 1%
  9. мова 1%
  10. зошитам 1%
  11. для 1%
  12. имеют 1%
  13. сайта 1%
  14. робочим 1%
  15. ответы 1%
  16. загрузка 1%
  17. материалы 1%
  18. відповіді 1%
  19. информации 1%
  20. запрещено 1%
  21. %

Website raw article content tells search engines what your web page content is about. The word usage rate is very important and the frequency of words used above 4% is perceived as spam.

☯ Technology Analysis

✇ DNS Records

AIN13 ip:
NSIN59 target: ns2.h04.hvosting.ua
NSIN59 target: ns1.h04.hvosting.ua
TXTIN59 txt: v=spf1 ip4: a mx ~all
entries: v=spf1 ip4: a mx ~all
TXTIN59 txt: recreativ-verification=xNnoRIgllHSo3QqjvT4Ww2YwY7LvqGAfcQU882GE
entries: recreativ-verification=xNnoRIgllHSo3QqjvT4Ww2YwY7LvqGAfcQU882GE
MXIN59 pri: 20
target: mail.4book.org
MXIN59 pri: 10
target: mail.4book.org
SOAIN59 mname: ns1.h04.hvosting.ua
rname: hostmaster.hvosting.ua
serial: 2013123027
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400

ℹ Domain WHOIS

✉ Server IP Details

☰ HTTP Headers

server nginx/1.13.3
date wed, 19 feb 2020 07
content-type text/html; charset=utf-8
transfer-encoding chunked
connection keep-alive
x-frame-options sameorigin
x-xss-protection 1; mode=block
x-content-type-options nosniff
etag w/"495032c09eb6f7cf32c01b794f4640b1"
x-request-id 9903e0db-8b09-490b-b711-7a517675d849
x-runtime 0.041656
cache-control no-cache, private, must-revalidate, max-age=0
x-cache-status hit
content-encoding gzip

✔ Robots.txt

User-agent: Mediapartners-Google Disallow: User-agent: * Sitemap: http://4book.org/sitemaps/sitemap.xml.gz

⚔ SSL Details

SubjectC = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Domain Validation Secure Server CA
IssuerC = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Certification Authority
Serial Number2b2e6eead975366c148a6edba37c8c07
Signature Algorithmsha384WithRSAEncryption
Public Key AlgorithmrsaEncryption
X509v3 Authority Key Identifierkeyid:BB:AF:7E:02:3D:FA:A6:F1:3C:84:8E:AD:EE:38:98:EC:D9:32:32:D4
X509v3 Subject Key Identifier90:AF:6A:3A:94:5A:0B:D8:90:EA:12:56:73:DF:43:B4:3A:28:DA:E7
X509v3 Key UsageDigitalSignature,CertificateSign,CRLSign
X509v3 Basic ConstraintsCA:TRUE,pathlen:0
X509v3 Extended Key UsageTLSWebServerAuthentication,TLSWebClientAuthentication
X509v3 Certificate PoliciesPolicy:X509v3AnyPolicy, Policy:
X509v3 CRL Distribution Points, FullName:, URI:http://crl.comodoca.com/COMODORSACertificationAuthority.crl
Authority Information AccessCAIssuers-URI:http://crt.comodoca.com/COMODORSAAddTrustCA.crt, OCSP-URI:http://ocsp.comodoca.com
Start dateFeb 12 00:00:00 2014 GMT
Expire dateFeb 11 23:59:59 2029 GMT
RSA Public Key2048

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