Overview
YandexAdditionalBot is a search crawler from Yandex used for search indexing, URL discovery, page rendering, result freshness, and search-quality checks.
Its primary user-agent pattern is YandexAdditionalBot; related patterns include YandexAdditionalBot Yandex robot; a representative HTTP user-agent is Mozilla/5.0 (compatible; YandexAdditionalBot/1.0; +http://yandex.com/bots).
YandexAdditionalBot is verified with High confidence. The identity type is Official Documented, and the evidence basis is official operator documentation.
YandexAdditionalBot is marked as respecting robots.txt directives for crawler access control.
YandexAdditionalBot should be reviewed against site policy, source evidence, crawl rate, and requested paths before a permanent allow or block rule is created.
Identity
- User-Agent Pattern
-
YandexAdditionalBot - Aliases
- YandexAdditionalBot Yandex robot
- HTTP Agent Examples
-
Mozilla/5.0 (compatible; YandexAdditionalBot/1.0; +http://yandex.com/bots) - Robots Token
- YandexAdditionalBot
- Identity Type
- Officially documented
- Evidence Method
- Verify YandexAdditionalBot by matching `YandexAdditionalBot` to Yandex evidence, then checking reverse DNS, source-network ownership, signed request data, or published crawler documentation when available.
Classification
- Type
- Search
- Kind
- Crawler
- Family
- Yandex
- Purpose
- Indexing
Behavior and handling
- Common Use
- YandexAdditionalBot is used for search indexing, URL discovery, page rendering, result freshness, and search-quality checks.
- Detection Notes
- YandexAdditionalBot traffic is primarily detected by the `YandexAdditionalBot` user-agent pattern; related patterns include `YandexAdditionalBot Yandex robot`; a representative HTTP user-agent is `Mozilla/5.0 (compatible; YandexAdditionalBot/1.0; +http://yandex.com/bots)`. Compare source IPs, reverse DNS, request paths, and crawl cadence with Yandex infrastructure before trusting the traffic.
- Respects robots.txt
- Yes
- Spoofing Risk
- YandexAdditionalBot has medium spoofing risk because the user-agent can be copied, even when the bot has strong source or documentation support.
- Risk
- Neutral
- Recommended Handling
- Depends
Rules and controls
- Robots.txt Snippet
-
User-agent: YandexAdditionalBot Disallow: /
Relationships
- Operator
- Yandex Checked 2026-06-23
Relationships without an Evidence link are normalized from the canonical directory record. They should not be interpreted as independent proof of physical presence or request origin.