Cut-the-knot.org Interactive Mathematics Miscellany and Puzzles

An encyclopedic collection of math resources for all grades. Arithmetic games, problems, puzzles, and articles

Online Status
Online

Server IP address resolved: Yes
Http response code: 200
Response time: 0.23 sec.
Last Checked: 06/28/2024

Over the time cut-the-knot.org has been ranked as high as 21,343 in the world, while most of its traffic comes from United States, where it reached as high as 35,698 position.

Cut-the-knot.org receives about 6,379 unique visitors and 8,293 pageviews per day. The estimated value of cut-the-knot.org is 148,920 USD. Each unique visitor makes about 1.3 pageviews on average.

Cut-the-knot.org is registered under .ORG top-level domain. Check other websites in .ORG zone.

At the time of the last check (October 10, 2024) cut-the-knot.org has a valid and up-to-date SSL certificate issued by GoDaddy.com, Inc. that expires on November 12, 2024. Check other websites using SSL certificates issued by GoDaddy.com, Inc..

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust cut-the-knot.org is quite a safe domain.

Mobile-Friendly test indicates that cut-the-knot.org is well optimized for mobile and tablet devices.


Global Rank
83,151
Average Load Time
2.11sec
Links In Count
2,041
Website Value
$148,920

Overview
Last Updated: 11/01/2024
Overall result - "cut-the-knot.org" is SAFE.
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
Last Updated: 03/22/2024
cut-the-knot.org is safe.

Norton ConnectSafe evaluates cut-the-knot.org for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 02/13/2019
cut-the-knot.org is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "cut-the-knot.org".
"cut-the-knot.org" is not a phishing page.
"cut-the-knot.org" does not install unwanted software.
"cut-the-knot.org" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 02/22/2021
cut-the-knot.org is safe.

McAfee assesses cut-the-knot.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 cut-the-knot.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
cut-the-knot.org child safety isvery good.

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

SSL Information
Domain cut-the-knot.org
Issuer OrganizationGoDaddy.com, Inc.
Issuer Go Daddy Secure Certificate Authority - G2
Algorithm RSA-SHA256
Valid form 10/12/2023
Expiration 11/12/2024
SignedCertificate is not self signed
Additional Domains cut-the-knot.org
www.cut-the-knot.org
Server Location
Scottsdale
Arizona
United States
ASN Information

ASN ID: 400754
ASN Title: GO-DADDY-COM-LLC, US

Last Update: 07/19/2024

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
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# Copyright 1997-2023, American Registry for Internet Numbers, Ltd.
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ASNumber: 400746 - 400755
ASName: GO-DADDY-COM-LLC
ASHandle: AS400746
RegDate: 2022-05-27
Updated: 2022-05-27
Ref: https://rdap.arin.net/registry/autnum/400746

OrgName: GoDaddy.com, LLC
OrgId: GODAD
Address: 2155 E GoDaddy Way
City: Tempe
StateProv: AZ
PostalCode: 85284
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RegDate: 2007-06-01
Updated: 2022-08-02
Comment: Please send abuse complaints to abuse@godaddy.com
Ref: https://rdap.arin.net/registry/entity/GODAD

OrgNOCHandle: NOC124-ARIN
OrgNOCName: Network Operations Center
OrgNOCPhone: +1-480-505-8809
OrgNOCEmail: noc@godaddy.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC124-ARIN

OrgTechHandle: NOC124-ARIN
OrgTechName: Network Operations Center
OrgTechPhone: +1-480-505-8809
OrgTechEmail: noc@godaddy.com
OrgTechRef: https://rdap.arin.net/registry/entity/NOC124-ARIN

OrgAbuseHandle: ABUSE51-ARIN
OrgAbuseName: Abuse Department
OrgAbusePhone: +1-480-624-2505
OrgAbuseEmail: abuse@godaddy.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE51-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2023, American Registry for Internet Numbers, Ltd.
#

WHOIS

Domain Name: cut-the-knot.org
Registry Domain ID: 5fa5db41ae4844d0bcc0cd0c9e379083-LROR
Registrar WHOIS Server: http://whois.godaddy.com
Registrar URL: http://www.whois.godaddy.com
Updated Date: 2024-07-27T12:41:51Z
Creation Date: 2001-11-06T20:05:04Z
Registry Expiry Date: 2025-11-06T20:05:04Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
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Name Server: ns55.domaincontrol.com
Name Server: ns56.domaincontrol.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-09-20T16:22:45Z

DNS Records
HostA RecordTTL
cut-the-knot.org107.180.50.22710800
HostMX RecordPriorityTTL
HostNS RecordTTL
cut-the-knot.orgns55.domaincontrol.com3600
cut-the-knot.orgns56.domaincontrol.com3600
HostTXT RecordTTL

ns55.domaincontrol.com
TTL: 3600
Email address: dns.jomax.net
Serial: 2018120301
Refresh: 28800
Retry: 7200
Expire: 604800
Minimum: 600

Errors
Warnings

Last tested: 11/20/2016

Desktop
Desktop Speed
83%
Desktop Resource Breakdown
Total Resources240
Number of Hosts90
Static Resources39
JavaScript Resources59
CSS Resources3

Last tested: 11/20/2016

Mobile
Mobile Usability
82%
Mobile Speed
63%
Mobile Resource Breakdown
Total Resources125
Number of Hosts46
Static Resources85
JavaScript Resources71
CSS Resources7
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