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Yahoo Japan SEO Crawler

GoodBotVerifiedBOT

A web crawler operated by Yahoo! JAPAN used to index content and analyze web pages for the Yahoo! JAPAN search engine ecosystem. Operated by LY Corporation.

GoodBot
Assessment
Search Engine Crawler
Category
BOT
Kind
1
Data sources
AI-generated summary, drawn from Cloudflare, operator docs, and community data

What is Yahoo Japan SEO Crawler?

Y!J-BRW is a specialized crawler deployed by LY Corporation to support the indexing and search functionality of Yahoo! JAPAN. Unlike the legacy Slurp bot associated with Yahoo.com, this specific user-agent is tailored for the Japanese market, ensuring that local content is accurately represented in search queries. It operates as a standard search engine crawler, respecting robots.txt directives to maintain site performance and relevance.

Helpful — This is a legitimate search engine crawler that helps websites appear in Yahoo! JAPAN search results.

Identification

Bot name
Yahoo Japan SEO Crawler
Operator
LY Corporation
Category
Search Engine Crawler
Kind
BOT
Verification
Verified bot
Cloudflare slug
yahoo-jp-seo
User-agent patterns
J-BRWJ-BRW/
User-agent string
Y!J-BRW/1.0 (https://support.yahoo-net.jp/PccSearch/s/article/H000007955)
Main use cases
Web page indexingSearch engine result generationContent discovery for Yahoo! JAPAN

Why it crawls your site

The bot crawls the web to build and maintain the index for Yahoo! JAPAN's search services, allowing users to find relevant information efficiently. By visiting websites, it gathers metadata and content to determine ranking and categorization within the search engine. Site owners can verify the bot's authenticity by checking the official Yahoo! JAPAN support documentation and ensuring the source IP addresses originate from verified LY Corporation network ranges.

Block or allow Yahoo Japan SEO Crawler

Block it

Add a Disallow rule for J-BRW in your robots.txt file. You can also block at the server level using your web server configuration or CDN firewall rules to filter requests matching the user-agent string.

# Block Yahoo Japan SEO Crawler from crawling your entire site
User-agent: J-BRW
Disallow: /

# Allow Yahoo Japan SEO Crawler full access
User-agent: J-BRW
Allow: /
Allow & verify

Ensure your robots.txt allows J-BRW. Verify requests by checking the user-agent string.

Traffic & trends

Cloudflare Radar traffic

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Google Trends interest

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Related bots

Other crawlers operated by LY Corporation.

Data sources

This profile is compiled from the following sources.

CloudflareRadar
Last updated July 26, 2026