cs61a.org ▷ CS 61A Fall 2023

Quick Summary

Online Status

Online

Server IP address resolved: Yes
Http response code: 200
Response time: 0.67 sec.
Last Checked: 04/20/2024

Cs61a.org traffic volume is 2,384 unique daily visitors and their 7,152 pageviews. The web value rate of cs61a.org is 132,787 USD. Each visitor makes around 3.21 page views on average.

By Alexa's traffic estimates cs61a.org placed at 17,175 position over the world, while the largest amount of its visitors comes from United States, where it takes 37,940 place.

Cs61a.org registered under .ORG top-level domain. Check other websites in .ORG zone.

The last verification results, performed on (September 25, 2022) cs61a.org show that cs61a.org has an expired SSL certificate issued by Google Trust Services LLC (expired on December 01, 2022). Click “Refresh” button for SSL Information at the Safety Information section. Check the list of websites using SSL certificates issued by Google Trust Services LLC.

In accordance with Google Safe Browsing, Google Safe Search and Symantec cs61a.org is pretty a safe domain.

Relying Google MobileFriendly test cs61a.org is well optimized for mobile and tablet devices.

Cs61a.org General Information

Global Rank

100,275

Average Load Time

0.53sec

Links In Count

Website Value

$124,100

Audience Geography. Where are cs61a.org visitors located?

Country	Visitors
United States US	80.7%
Australia AU	10.1%
India IN	1.8%
Other	7.5%

Country	Pageviews
United States US	72.6%
Australia AU	20.8%
India IN	0.9%
Other	5.7%

Country	Rank
Australia AU	18702
United States US	37940
India IN	303181

Where do visitors go on cs61a.org?

Subdomain	Pageviews
cs61a.org	93.34%
scheme.cs61a.org	5.35%
other	1.31%

Subdomain	Pageviews per User
cs61a.org	3.5
scheme.cs61a.org	1

Subdomain	Reach
cs61a.org	97.34%
scheme.cs61a.org	19.7%

How popular is cs61a.org?

Period	Global Rank	Global Rank Delta
past 3 months	100275	-31775
past month	159634	56092
past week	115066	-103168
yesterday	323807	168335

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	103667	-24283	52	33%	3	-9.366%
30	146768	25289	34	-19.88%	3.7	50%
7	116831	-76218	47	89%	3.2	-20%
1	489957	334544	6	-82.93%	1	-66.667%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	105157	-37433	64	47%
30	177466	74559	34	-48.097%
7	124172	-127604	54	100%
1	260772	96989	2	-48.799%

Cs61a.org Safety Information

Overview

Last Updated: 04/20/2024

Overall result - cs61a.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: 03/24/2024

cs61a.org is safe.

Norton ConnectSafe evaluates cs61a.org for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 02/19/2019

cs61a.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

cs61a.org is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

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: 02/23/2021

cs61a.org is safe.

McAfee assesses cs61a.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 cs61a.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 04/20/2024

cs61a.org child safety is unknown.

The WOT calculates reputation of the cs61a.org. This reputation system receives ratings from users and information from third-party sources, assesses the cs61a.org for safety features and confirms, whether cs61a.org is suitable for children.

SSL Information

SSL Checker Tool

Domain	cs61a.org
Issuer Organization	Google Trust Services LLC
Issuer	GTS CA 1D4
Algorithm	RSA-SHA256
Valid form	09/02/2022
Expiration	12/01/2022
Signed	Certificate is not self signed
Additional Domains	cs61a.org

Cs61a.org Server Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 15169
ASN Title: GOOGLE - Google LLC, US

Last Update: 10/06/2023

ASN Whois

#
# 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: 15169
ASName: GOOGLE
ASHandle: AS15169
RegDate: 2000-03-30
Updated: 2012-02-24
Ref: https://rdap.arin.net/registry/autnum/15169

OrgName: Google LLC
OrgId: GOGL
Address: 1600 Amphitheatre Parkway
City: Mountain View
StateProv: CA
PostalCode: 94043
Country: US
RegDate: 2000-03-30
Updated: 2017-12-21
Ref: https://rdap.arin.net/registry/entity/GOGL

OrgAbuseHandle: ABUSE5250-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-650-253-0000
OrgAbuseEmail: network-abuse@google.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE5250-ARIN

OrgTechHandle: ZG39-ARIN
OrgTechName: Google LLC
OrgTechPhone: +1-650-253-0000
OrgTechEmail: arin-contact@google.com
OrgTechRef: https://rdap.arin.net/registry/entity/ZG39-ARIN

RTechHandle: ZG39-ARIN
RTechName: Google LLC
RTechPhone: +1-650-253-0000
RTechEmail: arin-contact@google.com
RTechRef: https://rdap.arin.net/registry/entity/ZG39-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.
#

Cs61a.org Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain Whois

Domain Name: CS61A.ORG
Registry Domain ID: D173079261-LROR
Registrar WHOIS Server: whois.google.com
Registrar URL: https://domains.google.com
Updated Date: 2017-05-24T12:51:45Z
Creation Date: 2014-06-23T04:48:18Z
Registry Expiry Date: 2023-06-23T04:48:18Z
Registrar Registration Expiration Date:
Registrar: Google LLC
Registrar IANA ID: 895
Registrar Abuse Contact Email: registrar-abuse@google.com
Registrar Abuse Contact Phone: +1.8772376466
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: Contact Privacy Inc. Customer 12492218
Registrant State/Province: ON
Registrant Country: CA
Name Server: NS-CLOUD-C1.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-C2.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-C4.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-C3.GOOGLEDOMAINS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2021-05-12T18:02:14Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

Cs61a.org HTML Validation

HTML Validation Tool

Errors

Bad value “https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.

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

Bad value “https://sequoia-tree.github.io/#Textbook/The Terminal” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “https://sequoia-tree.github.io/#Textbook/Counting Problems” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “https://sequoia-tree.github.io/#Textbook/Orders of Growth” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “http://owenjow.xyz/cs61a/fa16/oog_review/OoG%20Review%20[Owen;%20Fall%202016].pdf” for attribute “href” on element “a”: Illegal character in path segment: “[” is not allowed.

Bad value “https://sequoia-tree.github.io/#Textbook/Iterators and Generators” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Warnings

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Cs61a.org Desktop Insights

Last tested: 12/21/2016

Desktop

Desktop Speed

86%

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

Leverage browser caching

Prioritize visible content

Minify HTML

Enable compression

Desktop Resource Breakdown

Total Resources	10
Number of Hosts	3
Static Resources	9
JavaScript Resources	5
CSS Resources	3

Cs61a.org Mobile Insights

Last tested: 08/15/2018

Mobile

Mobile Usability

99%

Size tap targets appropriately

Mobile Speed

67%

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

Prioritize visible content

Leverage browser caching

Minify CSS

Mobile Resource Breakdown

Total Resources	14
Number of Hosts	4
Static Resources	8
JavaScript Resources	3
CSS Resources	4

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Cs61a.org CS 61A Fall 2023

CS 61A: Structure and Interpretation of Computer Programs

Quick Summary

Cs61a.org General Information

Cs61a.org Safety Information

Cs61a.org Server Information

Cs61a.org Domain Name Information

Cs61a.org HTML Validation

Cs61a.org Desktop Insights

Cs61a.org Mobile Insights

Cs61a.org Nearest Competitors

Cs61a.org Typos