classoos.com
Classoos | Digital textbooks | Online Textbooks | E-Textbooks

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Online textbooks for KS3, KS4, GCSE, IGCSE, A-Level, BTEC and KS5 as well as IB curricula offering more than 20,000 textbooks from leading UK publishers

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Technical Rating

XSS attack - not protected. HTTP header "X-XSS-Protection" not found

User Interface redress attack - not protected. HTTP header "X-Frame-Options" not found

HTTP request response - 200

HTTPS request response - 200

Redirect from HTTP to HTTPS

iHTTP redirect: https://www.classoos.com

iHTTPS redirect: https://www.classoos.com/

Server response time 0,681 sec

HTML load time 1,012 sec

iHTML length: 654873

A link to a favicon is specified

iNumber of IMGs: 135

!The ALT attribute is not set for all IMGs

Adapted for mobile devices. It uses the VIEWPORT tag

!W3C Validation. Number of HTML errors: 21

W3C Validation. Number of HTML warnings: 9

Uses robots.txt

!Doesn't use a sitemap

DNS MX record is available. Anti-spam DMARC and ADSP records are available

Exact physical location of Classoos.com

iUS Seattle 410 Terry Ave N.

Amazon.com Invictus, 410, Terry Avenue North, South Lake Union, Belltown, Seattle, King County, Washington, 98109-5210, United States

Technical Information

iServer: Apache

iClassoos.com created 9 year(s) 3 month(s) 17 day(s) ago (2015-11-10)

iRegistration period ends in (2021-11-10)

iClassoos.com is registered in the GODADDY.COM, LLC

iClassoos.com registered to Registration Private

iСontacts: [email protected]

iNameservers: NS-1161.AWSDNS-17.ORG, NS-251.AWSDNS-31.COM, NS-644.AWSDNS-16.NET, NS-2011.AWSDNS-59.CO.UK

iIPv4: 52.213.149.216

iDNS TXT Records: "MS=ms47439832"
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"v=spf1 mx include:_spf.google.com include:amazonses.com include:mail.tranzila.com include:servers.mcsv.net include:spf.sendinblue.com ~all"

iDNS Mail Records: 10 aspmx.l.google.com., 20 alt1.aspmx.l.google.com., 30 alt2.aspmx.l.google.com., 40 aspmx2.googlemail.com., 50 aspmx3.googlemail.com.

iDMARC Mail Anti Spam Records: 52.213.149.216

iAuthor Domain Signing Practices Mail Records: 52.213.149.216

iRaw DNS Information

A: 52.213.149.216

TXT: "MS=ms47439832"
TXT: "Sendinblue-code:602eb130710a38e41ca6a719743d18c9"
TXT: "google-site-verification=U4aI115fNvQbDas3jLelCK7hQZuNRyPDJlmlUv1HSKU"
TXT: "google-site-verification=jLq0SbLjYymNzr64Wegmf7zQncFGDbgfT0jOxBT4ZHw"
TXT: "v=spf1 mx include:_spf.google.com include:amazonses.com include:mail.tranzila.com include:servers.mcsv.net include:spf.sendinblue.com ~all"

MX: 10 aspmx.l.google.com.
MX: 20 alt1.aspmx.l.google.com.
MX: 30 alt2.aspmx.l.google.com.
MX: 40 aspmx2.googlemail.com.
MX: 50 aspmx3.googlemail.com.

DMARC: 52.213.149.216

ADSP: 52.213.149.216