out of 100, User Experience 88 out of 100.
rdrr.io is a comprehensive index of R packages and documentation from CRAN, Bioconductor, GitHub, and R-Forge. The website is a one-stop-shop for R users looking for information on R packages and their documentation. The site is hosted by AS-CHOOPA - Choopa, LLC, US hosting provider. The site has a top-level domain of .IO, and the SSL is issued by COMODO CA Limited.
The website is visited by 75160 unique users per day and generates 450960 page views. The site value of rdrr.io is estimated to be 649440 US dollars.
The website has a user-friendly interface that is easy to navigate. The site is also family-friendly, meaning that it does not contain any objectionable content that may not be suitable for minors.
The website provides information on the R programming language, packages and documentation. The homepage provides users with a search bar where they can search for packages and documentation by name, description or author. Users can also browse packages by category, popularity or date of release.
The website's header contains links to popular packages and documentation, making it easy for users to access them quickly. The footer of the website provides users with essential links, such as the About Us, FAQ, and Contact Us pages.
The site's landing pages provide users with in-depth information about specific packages. The pages provide users with information about the package, its author, dependencies, and installation instructions. Users can also view the package's functions, data sets, and examples.
The website's documentation pages provide users with information on how to use R and its various packages. The pages contain detailed explanations, code snippets, and examples. Users can also download the documentation in various formats, such as PDF and HTML.
The website's performance is impressive, with a PageSpeed Insights score of 77 out of 100. The website's user experience score is also high, with a score of 88 out of 100. The website loads quickly, making it easy for users to access information quickly.
In conclusion, rdrr.io is a comprehensive index of R packages and documentation that provides users with essential information on R and its various packages. The site is user-friendly, family-friendly, and provides accurate and detailed information.





| Domain | rdrr.io |
| Issuer Organization | Let's Encrypt |
| Issuer | R11 |
| Algorithm | RSA-SHA256 |
| Valid form | 05/16/2025 |
| Expiration | 08/14/2025 |
| Signed | Certificate is not self signed |
| Additional Domains |
*.ext.rdrr.io *.proxy.rdrr.io *.rdrr.io *.svc.rdrr.io rdrr.io |
Alexa Rank shows how popular rdrr.io is in comparison with other sites. The most popular site has Alexa Rank equals 1. If rdrr.io 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 rdrr.io and pageviews on rdrr.io over the past 3 months.
ASN ID: 20473
ASN Title: AS-CHOOPA - Choopa, LLC, USLast Update: 09/09/2025
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# If you see inaccuracies in the results, please report at
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Domain Name: rdrr.io
Registry Domain ID: ef08a6a5332243ea86b95e6087b3fdbd-DONUTS
Registrar WHOIS Server: whois.gandi.net
Registrar URL: https://www.gandi.net
Updated Date: 2021-12-21T20:43:11Z
Creation Date: 2015-01-20T09:01:22Z
Registry Expiry Date: 2023-01-20T09:01:22Z
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Registrar Abuse Contact Phone: +33.170377661
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Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
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DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-11-17T01:26:48Z
| Host | A Record | TTL |
|---|---|---|
| rdrr.io | 138.201.54.179 | 60 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| rdrr.io | aspmx.l.google.com | 1 | 300 |
| rdrr.io | alt3.aspmx.l.google.com | 10 | 300 |
| rdrr.io | alt4.aspmx.l.google.com | 10 | 300 |
| rdrr.io | alt1.aspmx.l.google.com | 5 | 300 |
| rdrr.io | alt2.aspmx.l.google.com | 5 | 300 |
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|---|---|---|
| rdrr.io | ns-1181.awsdns-19.org | 172800 |
| rdrr.io | ns-15.awsdns-01.com | 172800 |
| rdrr.io | ns-1820.awsdns-35.co.uk | 172800 |
| rdrr.io | ns-669.awsdns-19.net | 172800 |
| Host | TXT Record | TTL |
|---|---|---|
| rdrr.io | google-site-verification=gD2lbBR99ElUI15KAG_W6mYqXZ8uShHt7g5nDgYY7oY | 300 |
| rdrr.io | yandex-verification: 3ea3262abe63a8ad | 300 |
ns-669.awsdns-19.net
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400
Last tested: 05/20/2017

| Total Resources | 40 |
| Number of Hosts | 15 |
| Static Resources | 30 |
| JavaScript Resources | 9 |
| CSS Resources | 5 |
Last tested: 05/12/2017


| Total Resources | 42 |
| Number of Hosts | 14 |
| Static Resources | 31 |
| JavaScript Resources | 9 |
| CSS Resources | 5 |