Training · NICT (Japan)
ICC-Crawler
A research crawler run by Japan's National Institute of Information and Communications Technology to build language corpora.
- Operator
- NICT (Japan)
- Purpose
- Training crawlers
- Feeds
- NICT corpus
- robots.txt token
ICC-Crawler- Honours robots.txt
- Honours robots.txt
- Documentation
- ucri.nict.go.jp
What it looks like in server logs
A representative user-agent string. Version numbers change; the ICC-Crawler token does not. Paste your own log line into the user-agent checker to confirm a match.
Mozilla/5.0 (compatible; ICC-Crawler/1.0; +https://ucri.nict.go.jp/en/icccrawler.html)How to block ICC-Crawler
Add this to the robots.txt at the root of your domain. Robots.txt is advisory: it works only on crawlers that choose to read it. This one is honours robots.txt according to its operator.
User-agent: ICC-Crawler
Disallow: /
To block every training crawler at once, or to block training while keeping AI search citations, use the robots.txt generator.
How to allow ICC-Crawler while blocking others
A more specific User-agent group wins over a wildcard. Place this above any User-agent: * block that disallows paths, and ICC-Crawler keeps full access.
User-agent: ICC-Crawler
Allow: /
How to verify a genuine hit
The user-agent string is self-asserted: anyone can send it from a laptop, and scrapers routinely impersonate well-known crawlers to slip past filters aimed at unknown ones.
No published ranges.
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