Bot intelligence record
Yahoo! JAPAN J-DLC
Usually allowUse the J-DLC identifier to separate Yahoo! JAPAN search indexing or content discovery traffic from normal visitor requests in server logs.
- Operator
- Yahoo! JAPAN
- Family
- Yahoo! JAPAN
- Type
- Search
- Source type
- Verified Directory
- Last checked
- 2026-05-20
User-Agent Pattern
Yahoo! JAPANJ-DLC
User-agent strings are identification signals, not proof of identity. Confirm important allow, block, or rate-limit decisions with logs, DNS or IP evidence, request behavior, or operator documentation when available.
Robots.txt Snippet
Click snippet to copyUser-agent: J-DLC Disallow: /Click the snippet to copy it, or highlight the text manually.
Handling Guidance
DependsThis bot is usually safe to allow when the request source is verified and the traffic matches your site policy.
Search indexing, content discovery, rendering, or search-result freshness checks.
Record Details
Structured data- Operator
- Yahoo! JAPAN
- Family
- Yahoo! JAPAN
- Type
- Search
- Purpose
- Indexing
- Identity type
- Verified Bot
- Confidence
- Medium
- Last verified
- 2026-04-01
- Last checked
- 2026-05-20
- Source type
- Verified Directory
- Verification
- Validate the identifying user-agent or signature against the operator documentation before creating hard allow rules.
- Spoofing risk
- User-agent strings can be spoofed. For allow-listing or low-friction rules, pair the published identifier with operator documentation or cryptographic verification when available.
Notes
Yahoo! JAPAN J-DLC is listed in the Botcrawl directory as a search crawler from Yahoo! JAPAN. The primary identifier for log review is J-DLC.
Identification
- User-agent pattern:
J-DLC - Family: Yahoo! JAPAN
- Type: Search
- Kind: Crawler
Common use
Search indexing, content discovery, rendering, or search-result freshness checks.
Verification and handling
Confirm the user-agent against server logs and use published operator documentation, IP ranges, reverse DNS, or other trust signals when available.
Directory guidance marks the risk level as Safe and the blocking decision as Depends. Do not rely on the user-agent string alone because user-agent strings can be copied or spoofed.
Robots.txt handling: Yes.
Evidence and Source
- Validate the identifying user-agent or signature against the operator documentation before creating hard allow rules.
- Match `J-DLC` as a case-insensitive substring in HTTP user-agent logs. Review bot_aliases for alternate names or product labels. Use bot_http_agent for full user-agent examples when the client sends a longer browser-like string. Do not treat a user-agent match alone as proof of identity for allow-listing.
- Search indexing, content discovery, rendering, or search-result freshness checks.
- User-agent strings can be spoofed. For allow-listing or low-friction rules, pair the published identifier with operator documentation or cryptographic verification when available.
Monitor This Bot In Edge
Botcrawl EdgeUse Botcrawl Edge to see matching traffic, create allow or block rules, and control this bot across connected sites.