Blueno

Safe Block: Depends Verified robots.txt: Unknown

NAVER preview robot that collects link summary information in editors and similar workflows.

Collects summary preview information for links inserted in NAVER products.

Key facts

Source type: Unknown
Confidence: High
Last checked: 2026-04-03
Verification: Verify the user-agent and confirm the source IP reverse-resolves into .naver.com, then confirm forward DNS matches.
Operator URL: https://searchadvisor.naver.com/guide/seo-basic-firewall
Source URL: https://searchadvisor.naver.com/guide/seo-basic-firewall
Spoofing risk: User-agent strings can be spoofed. Verify with the operator’s published guidance before allow-listing.

Official NAVER Search Advisor documentation names Blueno as a specialist robot.

User-agent: Blueno
Disallow: /

(http.user_agent contains "Blueno")

Advanced server rules

RewriteCond %{HTTP_USER_AGENT} Blueno [NC]
RewriteRule .* - [F,L]

if ($http_user_agent ~* "Blueno") { return 403; }

NAVER documents Blueno as a specialist robot that collects preview information when links are inserted in products such as the blog editor.

Verify the user-agent and confirm the source IP reverse-resolves into .naver.com, then confirm forward DNS matches.
Official NAVER Search Advisor documentation names Blueno as a specialist robot.
Collects summary preview information for links inserted in NAVER products.
User-agent strings can be spoofed. Verify with the operator’s published guidance before allow-listing.