Verified Bots Directory

Directory / Social previews

Blueno

Verifiable

Naver's summary-information robot. When a user attaches or shares a link in Naver Blog, Cafe, SmartEditor and similar services, Blueno fetches the linked page to build the preview, reading Open Graph or Twitter Cards markup first and falling back to summarising the document. Naver documents that it runs on user-initiated requests rather than as a search crawler, caches each summary for a period to avoid repeat visits, and can be confirmed by a forward-confirmed reverse DNS lookup. Its user agent carries a facebookexternalhit prefix, so a pattern written for Meta's link preview fetcher will also match it.

Operated by Naver · Official documentation

User agents

Patterns this directory matches, with real observed strings.

  • regexBlueno/\d
  • observedfacebookexternalhit/1.1 (compatible; Blueno/1.0; +http://naver.me/scrap)

How to verify

Reverse-DNS check a client IP

dig -x <client-ip> +short   # expect a hostname matching *.naver.com

Reverse-DNS suffixes: *.naver.com, *.line-apps.com

Good Bot Practices scorecard

  • Identifies honestly

    Stable UA token documented (1 pattern)

  • Verifiable

    Verifiable

  • Respects robots.txt

    Does not honor robots.txt

  • Behaves

    Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset

  • Reachable operator

    Operator and documentation published

Measured against the Good Bot Practices.