What is Y!J-BRZ/YATSHA crawler?
Y!J-BRZ/YATSHA crawler is a search engine crawler operated by Yahoo Japan that indexes web pages for inclusion in Yahoo Japan's search results. This bot visits websites to discover and analyze content as part of Yahoo Japan's web crawling operations. Agent Analytics can track when it visits your website.
Overview
| Operated By | Yahoo |
| Source | Official Website |
| Expected To Follow Robots.txt | Yes |
| Insights Last Updated | July 31, 2026 |
Do you operate this agent? Contact us to suggest an update.
Category
Expected Behavior
Y!J-BRZ/YATSHA crawler crawls on a schedule set by algorithms, not a calendar. Expect visit frequency to track your site's popularity, how often your content changes, and your domain authority. It throttles itself to avoid loading your server and follows crawl rules better than almost any other category of bot.
How To Block Y!J-BRZ/YATSHA crawler With Robots.txt
Add this rule to your robots.txt file to block Y!J-BRZ/YATSHA crawler from accessing your entire website, or use Automatic Robots.txt to block all search engine crawlers at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: Y!J-BRZ/YATSHA crawler # https://knownagents.com/agents/yj-brzyatsha-crawler
Disallow: /Global Insights for Y!J-BRZ/YATSHA crawler
As of July 31, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the world's top 1000 websites and their robots.txt files.
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
0% of top websites block Y!J-BRZ/YATSHA crawler in their robots.txt files.
Overall Search Engine Crawler Traffic
12.7% of all web traffic came from search engine crawlers.
Frequently Asked Questions
Should I Block Y!J-BRZ/YATSHA crawler?
No, unless you want your pages out of search results. Y!J-BRZ/YATSHA crawler feeds a search engine index, and blocking it erases your visibility and organic traffic from that engine. This is the one category almost every website should allow. Almost none of the top websites we track have robots.txt rules for Y!J-BRZ/YATSHA crawler right now.
Does Y!J-BRZ/YATSHA crawler Follow Robots.txt Rules?
Yes. Y!J-BRZ/YATSHA crawler is expected to follow robots.txt rules, so a disallow rule is the right first move. Automatic Robots.txt adds and maintains that rule for you, and Agent Analytics confirms Y!J-BRZ/YATSHA crawler actually follows it.
Does Y!J-BRZ/YATSHA crawler Access Private Content?
No. Y!J-BRZ/YATSHA crawler indexes public pages only and does not sign in anywhere. Watch for accidentally public content though, because anything reachable without a login can end up in search results.
Why Is Y!J-BRZ/YATSHA crawler Visiting My Website?
Y!J-BRZ/YATSHA crawler is keeping its search index current. Links, sitemaps, or direct submission brought it to your site, and it comes back at a rate tuned to how often your content changes and how popular your site is.
How Can I Tell if Y!J-BRZ/YATSHA crawler Is Visiting My Website?
Agent Analytics tracks Y!J-BRZ/YATSHA crawler visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user agent string contains "Y!J-BRZ/YATSHA crawler". Look for steady recurring visits spread across your site. Keep in mind that Y!J-BRZ/YATSHA crawler doesn't publish a verification method, so any client can claim its user agent string and a log match is a hint rather than proof.