Stepik.org Catalog — Stepik

Promoting efficient learning by developing innovative educational technologies. Create an interactive lesson and employ automated grading software for...

Stepik.org Quick Summary

Status

Online

Server IP address resolved: Yes

Http response code: 200

Response time: 2.75 sec.

Last Checked: 02/27/2021

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Stepik.org traffic estimate is about 113,655 unique visitors and 681,930 pageviews per day. The approximated value of stepik.org is 982,080 USD. Every unique visitor makes about 6 pageviews on average.

stepik.org is hosted by MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US. See the list of other websites hosted by MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US.

Stepik.org is registered under .ORG top-level domain. Check other websites in .ORG zone.

During the last check (November 27, 2019) stepik.org has an expired SSL certificate issued by Let's Encrypt (expired on January 17, 2020), 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, Symantec and Web of Trust stepik.org is pretty a safe domain.

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

Stepik.org General Information

Information not available

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Stepik.org Safety Information

Rankchart Summary

Unknown

Updated: 02/27/2021

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: 01/16/2021

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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

Unknown

Updated: 02/27/2021

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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: 02/23/2021

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McAfee assesses stepik.org 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 stepik.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Child safety is very good

Updated: 01/10/2019

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

Stepik.org SSL Information

Information about SSL/TLS certificates

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Domain	stepik.org
Issuer Organization	Let's Encrypt
Issuer	Let's Encrypt Authority X3
Algorithm	RSA-SHA256
Valid form	10/19/2019
Expiration	01/17/2020
Signed	Certificate is not self signed
Additional Domains	stepik.org www.stepik.org

SSL Checker

Stepik.org Server Information

Stepik.org Server Location

Where website hosting server is located?

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Stepik.org ASN Information

Information about IP address owner

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ASN ID: 8075

ASN Title: MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US

Updated: 07/05/2020

Raw ASN data:

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 8068 - 8075
ASName: MICROSOFT-CORP-MSN-AS-BLOCK
ASHandle: AS8068
RegDate: 1997-03-31
Updated: 2013-09-04
Ref: https://rdap.arin.net/registry/autnum/8068

OrgName: Microsoft Corporation
OrgId: MSFT
Address: One Microsoft Way
City: Redmond
StateProv: WA
PostalCode: 98052
Country: US
RegDate: 1998-07-09
Updated: 2017-01-28
Comment: To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to:
Comment: * https://cert.microsoft.com.
Comment:
Comment: For SPAM and other abuse issues, such as Microsoft Accounts, please contact:
Comment: * abuse@microsoft.com.
Comment:
Comment: To report security vulnerabilities in Microsoft products and services, please contact:
Comment: * secure@microsoft.com.
Comment:
Comment: For legal and law enforcement-related requests, please contact:
Comment: * msndcc@microsoft.com
Comment:
Comment: For routing, peering or DNS issues, please
Comment: contact:
Comment: * IOC@microsoft.com
Ref: https://rdap.arin.net/registry/entity/MSFT

OrgTechHandle: MRPD-ARIN
OrgTechName: Microsoft Routing, Peering, and DNS
OrgTechPhone: +1-425-882-8080
OrgTechEmail: IOC@microsoft.com
OrgTechRef: https://rdap.arin.net/registry/entity/MRPD-ARIN

OrgAbuseHandle: MAC74-ARIN
OrgAbuseName: Microsoft Abuse Contact
OrgAbusePhone: +1-425-882-8080
OrgAbuseEmail: abuse@microsoft.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/MAC74-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Geolocation

ASN Lookup

Stepik.org Domain Name Information

Stepik.org DNS Information

Domain name service records

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A
MX
NS
TXT
SOA

Host	A Record	TTL
stepik.org	13.69.75.239	600

Host	MX Record	Priority	TTL
stepik.org	ASPMX.L.GOOGLE.COM	1	3600
stepik.org	ALT1.ASPMX.L.GOOGLE.COM	5	3600
stepik.org	ALT2.ASPMX.L.GOOGLE.COM	5	3600
stepik.org	ALT3.ASPMX.L.GOOGLE.COM	10	3600
stepik.org	ALT4.ASPMX.L.GOOGLE.COM	10	3600

Host	NS Record	TTL
stepik.org	ns78.domaincontrol.com	3600
stepik.org	ns77.domaincontrol.com	3600

Host	TXT Record	TTL
stepik.org	v=spf1 mx ip4:13.69.75.239 ip4:95.213.151.43 ip4:104.47.158.169 include:spf.mandrillapp.com include:mail.zendesk.com include:sparkpostmail.com include:servers.mcsv.net include:_spf.google.com include:_spf.myjetbrains.com include:email.freshdesk.com ~all	1800
stepik.org	google-site-verification=e0C9HfpUIgVX6vyeBhrNHtqono16Gxn2D48tjm46JEI	1800
stepik.org	yandex-verification: fa6a64e3034dc7b7	1800
stepik.org	google-site-verification=F1_-uKpAc4KyTYHV6Ft_QOkSrfzPgyy_cv3Vw_hc7qc	1800
stepik.org	_globalsign-domain-verification=zukxRejq47RAnvHhoS1h0L3N1DqZKe6Vw4q4boswdf	1800

Stepik.org Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

Whois

DNS Lookup

Stepik.org HTML Validation

Stepik.org W3C HTML Markup Validation

HTML markup errors and warnings

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Errors:

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.

Bad value “x-dns-prefetch-control” for attribute “http-equiv” on element “meta”.

Attribute “imgfield” not allowed on element “img” at this point.

Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.

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

Attribute “bgimgfield” not allowed on element “div” at this point.

Attribute “field” not allowed on element “div” at this point.

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

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

Warnings:

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

HTML Validator

Stepik.org Desktop Performance

How Well Stepik.org Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

66%

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

Optimize images

Enable compression

Avoid landing page redirects

Leverage browser caching

Minify JavaScript

Minify HTML

Updated: 02/14/2018

Stepik.org Mobile Performance

How Optimized Is Stepik.org for Mobile Devices?

Tips on speeding up mobile site performance

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Usability
Speed
Resource Breakdown

Usability

100%

Updated: 06/04/2017

Stepik.org Nearest Competitors

Estimated Nearest Competitors Of Stepik.org

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stepik.org
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derivative-calculator.net
fullphim.net
gooten.com
planduringe.fun
madaluxevault.com
s*****x.com
shopify.co.uk

Stepik.org URL Typos

Most common user URL mistypes for stepik.org

www.stepik.com
www.stepik.net
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www.stepikm.org
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www.stepilk.org
www.stepio.org
www.stepiko.org

Total Resources	66
Number of Hosts	17
Static Resources	46
JavaScript Resources	16
CSS Resources	7

CSS	251.6 KBytes
Images	835.6 KBytes
HTML	70.0 KBytes
JavaScript	522.3 KBytes
Other	85.8 KBytes

Total Resources	50
Number of Hosts	13
Static Resources	9
JavaScript Resources	13
CSS Resources	5

CSS	155.4 KBytes
Images	74.1 KBytes
HTML	27.9 KBytes
JavaScript	372.9 KBytes
Other	33.0 KBytes