Bot intelligence record
Nutch
Review firstUse the Nutch identifier to separate Apache Nutch search indexing or content discovery traffic from normal visitor requests in server logs.
- Operator
- Apache Nutch
- Family
- Apache Nutch
- Type
- Search
- Source type
- Official
- Last checked
- 2026-05-20
User-Agent Pattern
Apache NutchNutch
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: Nutch Disallow: /Click the snippet to copy it, or highlight the text manually.
Handling Guidance
DependsUse this record as bot intelligence, then verify the request source and behavior before allowing, blocking, or rate limiting.
Search indexing, content discovery, rendering, or search-result freshness checks.
Record Details
Structured data- Operator
- Apache Nutch
- Family
- Apache Nutch
- Type
- Search
- Purpose
- Indexing
- Identity type
- Official Documented
- Confidence
- High
- Last verified
- 2026-04-01
- Last checked
- 2026-05-20
- Source type
- Official
- Verification
- Official Apache Nutch sysadmin/webmaster guidance; match the Nutch agent token, but note that Nutch deployments are not centrally operated by Apache.
- Spoofing risk
- User-agent strings for Nutch can be spoofed. Treat user-agent detection as a classification signal, then verify with published IP ranges, reverse DNS, signatures, operator documentation, or published operator documentation, IP ranges, reverse DNS, signatures, or other verified identity signals before allow-listing.
Notes
Nutch is listed in the Botcrawl directory as a search crawler from Apache Nutch. The primary identifier for log review is Nutch.
Identification
- User-agent pattern:
Nutch - Family: Apache Nutch
- Type: Search
- Kind: Crawler
Common use
Search indexing, content discovery, rendering, or search-result freshness checks.
Verification and handling
Official Apache Nutch sysadmin/webmaster guidance; match the Nutch agent token, but note that Nutch deployments are not centrally operated by Apache.
Directory guidance marks the risk level as Neutral 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
- Official Apache Nutch sysadmin/webmaster guidance; match the Nutch agent token, but note that Nutch deployments are not centrally operated by Apache.
- Match `Nutch` as a case-insensitive substring in HTTP user-agent logs. Review bot_aliases for alternate names or product labels. 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 for Nutch can be spoofed. Treat user-agent detection as a classification signal, then verify with published IP ranges, reverse DNS, signatures, operator documentation, or published operator documentation, IP ranges, reverse DNS, signatures, or other verified identity signals before allow-listing.
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.