# Blueno

Operator: Naver
Purpose: Link previews
Reviewed: 2026-09-14
HTTP identifier: Blueno
robots.txt token: Not specified

## What is Blueno?

Fetches link-preview information for Naver services.

## How to identify it

Look for the Blueno identifier in a request’s User-Agent. This is a name match, not identity verification. Version strings may change.

## How to check identity

Use Naver’s current crawler IP information or forward-confirmed reverse DNS under naver.com, as described in Search Advisor.

## Access and robots.txt

robots.txt behavior is not established by the linked source. Confirm the current policy before relying on an opt-out.

## What it means in your analytics

Preview retrieval can happen while someone inserts a link in an editor.

## Useful measures

Shared URLs; Image responses; Preview fetch errors.

## What to check next

Test the shared URL’s title and image before changing your preview metadata.

## Sources

- [searchadvisor.naver.com](https://searchadvisor.naver.com/guide/seo-basic-firewall)

Operator facts are source-backed; interpretation and actions are Apostl guidance.

## Related profiles

- [Yeti](https://apostl.dev/bots/yeti)
- [Ads-Naver](https://apostl.dev/bots/ads-naver)
- [Slackbot-LinkExpanding](https://apostl.dev/bots/slackbot-linkexpanding)

[Start measuring agent traffic](https://apostl.dev/start/agent-analytics)