Htdp.org How to Design Programs
Htdp.org Overview
Website Overview: htdp.org - How to Design Programs
htdp.org is a website dedicated to teaching and promoting the principles and techniques of program design. The site provides valuable resources and guidance for individuals interested in learning how to develop efficient and well-structured computer programs.
The website attracts a considerable amount of traffic with 790 unique users per day, averaging around 2212 pageviews. This indicates that there is a steady audience actively engaging with the content provided on htdp.org.
In terms of monetary value, the site is estimated to be worth approximately 39,420 US dollars. This valuation takes into account various factors such as website traffic, quality of content, and potential revenue generation through advertisements or partnerships.
The site is hosted by FASTLY, a renowned hosting provider based in the United States. FASTLY is known for its reliable and high-performance infrastructure, ensuring that htdp.org can handle the incoming traffic efficiently.
The website's domain, htdp.org, has a Top Level Domain (TLD) of .ORG. This TLD is commonly associated with non-profit organizations and educational institutions, indicating that htdp.org is likely to provide educational content rather than commercial services.
The SSL certificate for htdp.org is issued by Internet2, a respected provider of network and security services. This SSL certificate ensures that communication between users and the website is encrypted and secure, protecting sensitive information from unauthorized access.
From a family-friendly perspective, it is reasonable to assume that htdp.org is suitable for all audiences. Given its focus on teaching computer programming, the content is likely to be informative and educational without promoting any inappropriate or unsafe practices.
According to PageSpeed Insights, htdp.org scores an impressive speed of 96, indicating that the website is optimized for fast loading times. This is crucial for providing a smooth and user-friendly browsing experience, ensuring that visitors can access information quickly.
Additionally, htdp.org has 1193 external backlinks, indicating that other websites find the content on htdp.org valuable enough to link to. This demonstrates the reputation and authority of htdp.org within the programming and educational communities.
Overall, htdp.org stands as a valuable resource for individuals looking to learn how to design programs effectively. With its reliable hosting, secure communication, family-friendly content, and high-performance optimization, it offers an enriching experience for its users.
Htdp.org Rank Summary
Audience Geography. Where are htdp.org visitors located?
| Country | Visitors |
|---|---|
 United States US | 46.1% |
| Russian Federation RU | 1.9% |
| Other | 52.2% |
| Country | Pageviews |
|---|---|
| United States US | 40.3% |
| Russian Federation RU | 3.7% |
| Other | 55.9% |
| Country | Rank |
|---|---|
| United States US | 156603 |
| Russian Federation RU | 371013 |
Where do visitors go on htdp.org?
| Subdomain | Pageviews |
|---|---|
| htdp.org | 100% |
| Subdomain | Pageviews per User |
|---|---|
| htdp.org | 2.5 |
| Subdomain | Reach |
|---|---|
| htdp.org | 100% |
How popular is htdp.org?
| Period | Global Rank | Global Rank Delta |
|---|---|---|
| past 3 months | 302607 | 11137 |
| past month | 397475 | -2592 |
| past week | 558777 | -14957 |
| yesterday | 479344 | -60566 |
| Days | Pageviews Rank | Pageviews Rank Delta | Pageviews per Million | Pageviews per Million Delta | Pageviews per User | Pageviews per User Delta |
|---|---|---|---|---|---|---|
| 90 | 320744 | 57402 | 12 | -21.32% | 2.8 | -25.27% |
| 30 | 447998 | 14330 | 8 | -6.677% | 2.5 | -7.547% |
| 7 | 473117 | -65672 | 8 | 30% | 4 | 30% |
| 1 | 251737 | -172827 | 2 | 100% | 9 | 100% |
| Days | Reach Rank | Reach Rank Delta | Reach per Million | Reach per Million Delta |
|---|---|---|---|---|
| 90 | 315904 | -9194 | 16 | 5% |
| 30 | 405294 | -10784 | 12 | 0.6% |
| 7 | 667551 | 30825 | 8 | 8% |
| 1 | 678633 | 1011 | 8 | -1.7% |
Htdp.org Website Safety
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 ConnectSafe evaluates htdp.org for any unsafe and insecure content. The results are critical for families with young children.
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.
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.
McAfee assesses htdp.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 htdp.org for mature or inappropriate content, only security checks are evaluated.
The WOT calculates reputation of the htdp.org. This reputation system receives ratings from users and information from third-party sources, assesses the htdp.org for safety features and confirms, whether htdp.org is suitable for children.
| Domain | *.htdp.org |
| Issuer Organization | Internet2 |
| Issuer | InCommon RSA Server CA |
| Algorithm | RSA-SHA256 |
| Valid form | 10/18/2018 |
| Expiration | 10/17/2020 |
| Signed | Certificate is not self signed |
| Additional Domains |
*.htdp.org htdp.org |
Htdp.org Rank History
Alexa Rank shows how popular htdp.org is in comparison with other sites. The most popular site has Alexa Rank equals 1. If htdp.org has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to htdp.org and pageviews on htdp.org over the past 3 months.
Htdp.org Hosting Information
ASN ID: 54113
ASN Title: FASTLY - Fastly, USLast Update: 07/31/2024
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# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
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ASNumber: 54113
ASName: FASTLY
ASHandle: AS54113
RegDate: 2011-10-04
Updated: 2012-03-02
Comment: http://www.fastly.com/
Ref: https://rdap.arin.net/registry/autnum/54113
OrgName: Fastly
OrgId: SKYCA-3
Address: PO Box 78266
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2011-09-16
Updated: 2017-03-30
Ref: https://rdap.arin.net/registry/entity/SKYCA-3
OrgNOCHandle: FNO19-ARIN
OrgNOCName: Fastly Network Operations
OrgNOCPhone: +1-415-404-9374
OrgNOCEmail: noc@fastly.com
OrgNOCRef: https://rdap.arin.net/registry/entity/FNO19-ARIN
OrgTechHandle: FRA19-ARIN
OrgTechName: Fastly RIR Administrator
OrgTechPhone: +1-415-404-9374
OrgTechEmail: rir-admin@fastly.com
OrgTechRef: https://rdap.arin.net/registry/entity/FRA19-ARIN
OrgAbuseHandle: ABUSE4771-ARIN
OrgAbuseName: Abuse Account
OrgAbusePhone: +1-415-496-9353
OrgAbuseEmail: abuse@fastly.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE4771-ARIN
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# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
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# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
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Htdp.org Domain Registration and Settings
Domain Name: HTDP.ORG
Registry Domain ID: D74020628-LROR
Registrar WHOIS Server: whois.gandi.net
Registrar URL: http://www.gandi.net
Updated Date: 2021-01-30T18:20:11Z
Creation Date: 2001-06-29T14:32:48Z
Registry Expiry Date: 2022-06-29T14:32:48Z
Registrar Registration Expiration Date:
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: How to Design Programs
Registrant State/Province: RI
Registrant Country: US
Name Server: KATE.NS.CLOUDFLARE.COM
Name Server: CLYDE.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2021-05-30T16:25:51Z
| Host | A Record | TTL |
|---|---|---|
| htdp.org | 128.148.32.110 | 3600 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| htdp.org | aspmx.l.google.com | 0 | 3600 |
| htdp.org | aspmx2.googlemail.com | 10 | 3600 |
| htdp.org | aspmx3.googlemail.com | 10 | 3600 |
| htdp.org | alt1.aspmx.l.google.com | 5 | 3600 |
| htdp.org | alt2.aspmx.l.google.com | 5 | 3600 |
| Host | NS Record | TTL |
|---|---|---|
| htdp.org | ns-1106.awsdns-10.org | 172800 |
| htdp.org | ns-2035.awsdns-62.co.uk | 172800 |
| htdp.org | ns-372.awsdns-46.com | 172800 |
| htdp.org | ns-699.awsdns-23.net | 172800 |
| Host | TXT Record | TTL |
|---|---|---|
| htdp.org | v=spf1 -all | 3600 |
ns-699.awsdns-23.net
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400
Htdp.org HTML Check
Htdp.org Desktop Performance
Last tested: 12/05/2017
| Total Resources | 4 |
| Number of Hosts | 1 |
| Static Resources | 3 |
Htdp.org Mobile Insights
Last tested: 12/03/2017
| Total Resources | 4 |
| Number of Hosts | 1 |
| Static Resources | 3 |
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