.readthedocs.io
Download .readthedocs.io domains
27,154 active domains
Public suffix · Under .io · Operated by Internet Computer Bureau
TLD suffix
Dataset updated · 2026-08-18
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About .readthedocs.io
.readthedocs.io is a multi-level public suffix sitting one level below .io. Suffixes like this exist because registries reserve a second level for specific registrant categories. Registrants treat them as if they were top-level TLDs, and so do webatla datasets.
At a glance
All figures as of Aug 18, 2026
New domain registrations
13
last week
15
last month
Active domains27,154
registered and active domains in .readthedocs.io zone
Active websites27,121
active websites in .readthedocs.io zone
DNS27,154
domains with DNS records
Countries1
countries represented (by hosting IP)
RDAP & WHOIS7,922
domains with RDAP & WHOIS records
Database preview of .readthedocs.io domains
5 sample rows from the live database. Switch the dataset to see what each one contains, then preview the file or buy the full dataset.
webatla-readthedocs-io-all-2026-08-18.jsonl.zst · 27,154 rows · 23 columns
Daily fresh export
| Domain | TLD suffix | TLD | Domain type |
|---|---|---|---|
| 1ceohuynhtrong.readthedocs.io | readthedocs.io | io | PRIVATE |
| 1ceonhattoan.readthedocs.io | readthedocs.io | io | PRIVATE |
| 2015-mar-semimodel.readthedocs.io | readthedocs.io | io | PRIVATE |
| 2015-may-nonmodel.readthedocs.io | readthedocs.io | io | PRIVATE |
| 2017-cicese-metagenomics.readthedocs.io | readthedocs.io | io | PRIVATE |
| … | … | … | … |
| Domain | TLD suffix | TLD | Domain type | Country by IP | PR value | Harmonic value | Domain creation date | Domain expiration date |
|---|---|---|---|---|---|---|---|---|
| 1ceohuynhtrong.readthedocs.io | readthedocs.io | io | PRIVATE | US | 0 | 0 | — | — |
| 1ceonhattoan.readthedocs.io | readthedocs.io | io | PRIVATE | US | 0 | 0 | — | — |
| 2015-mar-semimodel.readthedocs.io | readthedocs.io | io | PRIVATE | US | 0 | 0 | — | — |
| 2015-may-nonmodel.readthedocs.io | readthedocs.io | io | PRIVATE | US | 0 | 0 | — | — |
| 2017-cicese-metagenomics.readthedocs.io | readthedocs.io | io | PRIVATE | US | 0 | 0 | — | — |
| … | … | … | … | … | … | … | … | … |
| Domain | TLD suffix | TLD | Domain type | HTTP status | IP address | Country by IP | Social networks | Technologies last data checked | Technologies | PR value | Harmonic value | Domain creation date | Domain expiration date |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1ceohuynhtrong.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/readthedocs/sphinx_rtd_theme"]} | 2026-07-19 | HSTS, HTTP/3, jQuery, Pygments, Cloudflare, Amazon Web Services, Cloudflare Bot Management | 0 | 0 | — | — |
| 1ceonhattoan.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/readthedocs/sphinx_rtd_theme"]} | 2026-07-19 | HSTS, HTTP/3, jQuery, Pygments, Cloudflare, Amazon Web Services, Cloudflare Bot Management | 0 | 0 | — | — |
| 2015-mar-semimodel.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/ngs-docs/angus"]} | 2026-07-19 | HSTS, HTTP/3, Sphinx 1.2.2, jQuery 2.0.3, MathJax, Pygments, Cloudflare, Underscore.js, jQuery Migrate 1.2.1, Amazon Web Services | 0 | 0 | — | — |
| 2015-may-nonmodel.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/ngs-docs/2015-may-nonmodel","https://github.com/ngs-docs/angus"]} | 2026-07-19 | HSTS, HTTP/3, Sphinx 1.3.1, jQuery 2.0.3, MathJax, Pygments, Cloudflare, Underscore.js, jQuery Migrate 1.2.1, Amazon Web Services | 0 | 0 | — | — |
| 2017-cicese-metagenomics.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/ngs-docs/2017-ucsc-metagenomics"]} | 2026-07-19 | HSTS, HTTP/3, Sphinx 1.5.3, jQuery 2.0.3, MathJax, Lightbox, Pygments, Bootstrap 3.3.7, Cloudflare, Underscore.js | 0 | 0 | — | — |
| … | … | … | … | … | … | … | … | … | … | … | … | … | … |
| Domain | TLD suffix | TLD | Domain type | DNS last data checked | DNS Status | DNS records |
|---|---|---|---|---|---|---|
| 1ceohuynhtrong.readthedocs.io | readthedocs.io | io | PRIVATE | 2026-08-07 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} |
| 1ceonhattoan.readthedocs.io | readthedocs.io | io | PRIVATE | 2026-08-18 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} |
| 2015-mar-semimodel.readthedocs.io | readthedocs.io | io | PRIVATE | 2026-08-16 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} |
| 2015-may-nonmodel.readthedocs.io | readthedocs.io | io | PRIVATE | 2026-08-09 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} |
| 2017-cicese-metagenomics.readthedocs.io | readthedocs.io | io | PRIVATE | 2026-08-14 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} |
| … | … | … | … | … | … | … |
| Domain | RDAP/WHOIS last data checked | RDAP/WHOIS method | Domain creation date | Domain expiration date | Domain last changed | Registrar | RDAP/WHOIS Record | Response Status RDAP/WHOIS |
|---|---|---|---|---|---|---|---|---|
| 1ceohuynhtrong.readthedocs.io | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 1ceonhattoan.readthedocs.io | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 2015-mar-semimodel.readthedocs.io | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 2015-may-nonmodel.readthedocs.io | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 2017-cicese-metagenomics.readthedocs.io | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| … | … | … | … | … | … | … | … | … |
| Domain | TLD suffix | TLD | Domain type | HTTP status | IP address | Country by IP | Social networks | Technologies last data checked | Technologies | DNS last data checked | DNS Status | DNS records | PR value | Harmonic value | RDAP/WHOIS last data checked | RDAP/WHOIS method | Domain creation date | Domain expiration date | Domain last changed | Registrar | RDAP/WHOIS Record | Response Status RDAP/WHOIS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1ceohuynhtrong.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/readthedocs/sphinx_rtd_theme"]} | 2026-07-19 | HSTS, HTTP/3, jQuery, Pygments, Cloudflare, Amazon Web Services, Cloudflare Bot Management | 2026-08-07 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} | 0 | 0 | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 1ceonhattoan.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/readthedocs/sphinx_rtd_theme"]} | 2026-07-19 | HSTS, HTTP/3, jQuery, Pygments, Cloudflare, Amazon Web Services, Cloudflare Bot Management | 2026-08-18 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} | 0 | 0 | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 2015-mar-semimodel.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/ngs-docs/angus"]} | 2026-07-19 | HSTS, HTTP/3, Sphinx 1.2.2, jQuery 2.0.3, MathJax, Pygments, Cloudflare, Underscore.js, jQuery Migrate 1.2.1, Amazon Web Services | 2026-08-16 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} | 0 | 0 | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 2015-may-nonmodel.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/ngs-docs/2015-may-nonmodel","https://github.com/ngs-docs/angus"]} | 2026-07-19 | HSTS, HTTP/3, Sphinx 1.3.1, jQuery 2.0.3, MathJax, Pygments, Cloudflare, Underscore.js, jQuery Migrate 1.2.1, Amazon Web Services | 2026-08-09 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} | 0 | 0 | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| 2017-cicese-metagenomics.readthedocs.io | readthedocs.io | io | PRIVATE | HTTP 200 | 104.16.253.120 | US | {"github":["https://github.com/ngs-docs/2017-ucsc-metagenomics"]} | 2026-07-19 | HSTS, HTTP/3, Sphinx 1.5.3, jQuery 2.0.3, MathJax, Lightbox, Pygments, Bootstrap 3.3.7, Cloudflare, Underscore.js | 2026-08-14 | TRUE | {"A":["104.16.253.120","104.16.254.120"],"AAAA":["2606:4700::6810:fd78","2606:4700::6810:fe78"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.16.253.120,104.16.254.120","ipv6hint=2606:4700::6810:fd78,2606:4700::6810:fe78"],"target":"","priority":1}]} | 0 | 0 | — | — | — | — | — | The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritati | — | — |
| … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … | … |
Showing 5 of 27,154 rows · All active domains · Every live domain with its TLD and domain type.
Top technologies on .readthedocs.io
| Technology | Sites | Share |
|---|---|---|
| HTTP/3 | 27K | 99.5% |
| Cloudflare | 27K | 99.5% |
| Cloudflare Bot Management | 27K | 99.4% |
| HSTS | 23K | 83.0% |
| Amazon Web Services | 21K | 78.4% |
Top countries on .readthedocs.io
| Country | Sites | Share |
|---|---|---|
| 🇺🇸 United States | 27K | 100.0% |
The .readthedocs.io dataset
Everything we have on 27,154 .readthedocs.io domains in one downloadable file, fresh export every day. Same columns and cadence as any top-level TLD.
Buy a dataset to download .readthedocs.io
The full .readthedocs.io slice (JSONL, fresh daily exports) lives inside each dataset. Get one from €29 to €599 per month and download immediately.
How to download the .readthedocs.io domain list
The complete .readthedocs.io domain list is available as one structured file. Every entry in the list is a single registered domain exported with its full record, so you can work it all offline instead of crawling it yourself.
Pick the dataset that fits your use case, then download the .readthedocs.io list in JSONL (zstd-compressed), the very same list that powers our API. A free sample of the list is available before you pay, and you can re-download the latest export any time during your access month.
Each .readthedocs.io list includes, for every domain:
- DNS, RDAP and WHOIS records, registrar and dates across the full list.
- Detected technologies for each site in the list.
- Hosting IP, country and PageRank / Harmonic ranking.
- A daily-refreshed export, so the list you receive is never stale.
Frequently asked questions
How many .readthedocs.io domains are there?
webatla tracks 27K active .readthedocs.io domains, re-exported every day, each with its DNS, RDAP/WHOIS, detected technologies, IP, hosting country and ranking.
Can I download the full list of .readthedocs.io domains?
Yes, the full .readthedocs.io list downloads as structured JSONL (zstd). A free sample is available first.
What's included for each domain, and how fresh is it?
Every domain carries the full schema (DNS, RDAP/WHOIS, technologies, IP & country, PageRank and Harmonic) re-exported daily.
How do I download the .readthedocs.io domain list?
Choose a dataset, and the full .readthedocs.io list is then yours as a single JSONL file in your account. You can re-download the list anytime during your access month, and a free sample is available to download first.
What format is the .readthedocs.io list in?
The list is yours to download as JSONL compressed with zstd, one domain per line, ready to load straight into any database or script. The exact same list is also reachable through our API.
Can I download just the .readthedocs.io domains, or the whole database?
Both. Each dataset is a single downloadable file, buy just the one you need for .readthedocs.io. Or buy All data for the entire database: every dataset combined (identity, ranking, technologies, DNS and RDAP/WHOIS) in one file. Daily fresh export.
Get the full list of .readthedocs.io domains
Pick the dataset that covers what you need. Each one includes .readthedocs.io and downloads as JSONL, rebuilt daily.
All active domains
4 columns
Every live domain with its TLD and domain type.
€29 / mo
Buy and download →
Websites + Ranking
9 columns
Active websites with country, PageRank, harmonic rank and domain dates.
€99 / mo
Buy and download →
Technologies
14 columns
Full website tech stack per site: CMS, payments, analytics, frameworks.
€159 / mo
Buy and download →
DNS
7 columns
Full DNS records for every domain across 21 record types, resolution status and per-record data, exported daily.
€199 / mo
Buy and download →
RDAP & WHOIS
9 columns
Registrar, registrant, registration history, RDAP and WHOIS records.
€299 / mo
Buy and download →
All data
23 columns
Everything we have, in a single package. The full webatla universe.
€599 / mo
Buy and download →
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