| --- |
| license: cc-by-4.0 |
| pretty_name: Dead-Web Common Crawl (2018-2026) |
| tags: |
| - web |
| - link-rot |
| - common-crawl |
| - dead-domains |
| - reachability |
| configs: |
| - config_name: sample |
| data_files: data/sample.jsonl |
| --- |
| |
| # Dead-Web Common Crawl — a longitudinal host-reachability panel (2018-2026) |
|
|
| An open dataset labeling the reachability of **172,959,928 registered domains** across **80 monthly |
| Common Crawl archives** (2018-2026), built from Common Crawl's robotstxt subset and **calibrated |
| against a live re-probe** to separate genuinely-dead domains from those merely blocking crawlers or |
| dropped from the crawl. |
|
|
| **~40M domains (~23% of the 8-year union) are calibrated genuinely dead.** Of domains that disappeared |
| from Common Crawl, only **64.2% [63.5-64.9%]** are truly dead — 31% still resolve, 4.7% are blocked. |
| Domains last seen *blocked* are only 44.7% dead (the dead-vs-blocked distinction, measured). |
|
|
| Per-domain schema: domain, first_ord, last_ord, total_crawls(80), n_present, last_state, |
| recent_absence_streak, label (alive_present/dead_candidate/dark_ambiguous/intermittent). |
|
|
| Built with the open-source crawlora-deadweb CLI (https://github.com/Crawlora-org/crawlora-deadweb). |
| Source repo: https://github.com/Crawlora-org/dead-web-commoncrawl . License: CC BY 4.0. |
| ## Citation |
|
|
| If you use this dataset, please cite the Zenodo archive — concept DOI |
| **10.5281/zenodo.20814397** (always resolves to the latest version; this release, v1.0.0, |
| is `10.5281/zenodo.20814398`): |
|
|
| > Crawlora (2026). *Dead-Web Common Crawl: a longitudinal host-reachability panel (2018-2026)* |
| > [Data set]. Zenodo. https://doi.org/10.5281/zenodo.20814397 |
|
|
| **Mirrors:** [Zenodo (DOI)](https://doi.org/10.5281/zenodo.20814397) · |
| [GitHub](https://github.com/Crawlora-org/dead-web-commoncrawl) · |
| [Kaggle](https://www.kaggle.com/datasets/plantpark/dead-web-commoncrawl) |
|
|
