Bot IP: 5.255.231.166

Name: Bot IP Lookup: 5.255.231.166 (Yandex Bot)
Creator: Track-A-Bot

Yandex Bot is the primary web crawler used by Yandex, a major Russian search engine, to index and update web content for its search results.

Likely legitimate

Track-A-Bot Trust Score: 73/100

score

0255075100

Why Track-A-Bot rated this IP (tap to expand)

Identity

✅ Marked as bot traffic
✅ Bot name present
✅ User-agent matches bot name
✅ User-agent includes identity link/email

Hostname

✅ Hostname observed
ℹ️ Hostname does not resemble bot name
✅ Hostname status marked verified
✅ No hostname mismatch flags

Behavior

✅ Requested /robots.txt
✅ No referrer (typical crawler behavior)
✅ Mostly 200/304 responses
📌 Visits: 13
⏱️ Age: 14128h

Penalties

✅ No major spoof pattern
⚠️ Browser fingerprint fields present
⚠️ Cookies enabled (browser-like)
⚠️ Connection type reported (browser-like)

Total visits: 13 First seen: May 3rd, 2024 2:28 AM Last seen: Dec 12th, 2025 7:23 PM

Known Hostname(s)

5-255-231-166.spider.yandex.com

Known User Agent(s)

Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)
Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0

Known Accepted Encoding(s)

identity
gzip,deflate

Known Screen Resolution(s)

800x600

Known Battery Level(s)

100%

Known Connection Type(s)

Known CPU Cores

Known Device Memory

Known Plugins

PDF Viewer, Chrome PDF Viewer, Chromium PDF Viewer, Microsoft Edge PDF Viewer, WebKit built-in PDF

Cookies Enabled

✅ Yes

Known Platform(s)

Linux x86_64

Common User-Agent Tokens

These are identifiers found inside user-agent strings we observed for yandexbot.

Token

Seen

First seen

Last seen

yandexbot/3.0

5,867

3/16/24

12/12/25

yandexbot/3.0 5,867 seen

First 3/16/24

Last 12/12/25

yandexfavicons/1.0

10/15/24

12/12/25

yandexfavicons/1.0 88 seen

First 10/15/24

Last 12/12/25

yandeximages/3.0

4/6/24

7/24/24

yandeximages/3.0 4 seen

First 4/6/24

Last 7/24/24

yandexrenderresourcesbot/1.0

7/7/24

4/12/25

yandexrenderresourcesbot/1.0 4 seen

First 7/7/24

Last 4/12/25

build/mmb29k

5/10/24

12/12/25

build/mmb29k 2 seen

First 5/10/24

Last 12/12/25

sm-g570f

5/10/24

12/12/25

sm-g570f 2 seen

First 5/10/24

Last 12/12/25

yandexmetrika/3.0

5/10/24

12/12/25

yandexmetrika/3.0 2 seen

First 5/10/24

Last 12/12/25

ytranslate

5/10/24

12/12/25

ytranslate 2 seen

First 5/10/24

Last 12/12/25

yadirectfetcher/1.0

12/12/25

yadirectfetcher/1.0 1 seen

First 12/12/25

Last 12/12/25

Identity Links

These are URLs we observed in association with yandexbot (often used as an identity, help, or policy link).

URL

Seen

First seen

Last seen

yandex.com/bots

5,966

3/16/24

12/12/25

yandex.com/bots 5,966 seen yandex.com

First 3/16/24

Last 12/12/25

Bot FAQ for this IP

Why is yandexbot visiting my website?

Yandexbot is a web crawler operated by Yandex, a major search engine. The visits from IP address 5.255.231.166, using the user agent 'Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)', are consistent with automated indexing activity. Yandexbot typically visits websites to fetch pages and resources, such as /robots.txt and other URLs, to update its search index. This helps Yandex provide up-to-date search results. If Yandexbot is visiting your site, it is likely attempting to discover and index your content for inclusion in Yandex search results.

What does yandexbot do?

Yandexbot is designed to automatically crawl and index web content for the Yandex search engine. It systematically visits websites, retrieves publicly available pages, and processes information to update Yandex’s search database. The bot respects standard web crawling protocols, such as robots.txt, which allows site owners to control which parts of their site are accessible to crawlers. Yandexbot’s activity can be identified by its user agent string and reverse DNS hostname (e.g., spider.yandex.com).

Is yandexbot safe?

Yandexbot is a legitimate search engine crawler and is generally considered safe when operating within normal parameters. Its requests are typically identifiable by the user agent and reverse DNS hostname. However, as with any automated traffic, it is important to monitor for unusual activity or excessive requests. To verify authenticity, check the reverse DNS for spider.yandex.com and confirm the user agent. Site owners can manage Yandexbot’s access using robots.txt, implement rate limiting if needed, add or remove it from allow/block lists, and monitor server logs for any unexpected behavior.

This page provides a detailed lookup for the bot with the IP address of 5.255.231.166, based on real-world traffic observed across websites using Track-A-Bot software. Use this information to verify whether activity from this IP belongs to a legitimate search engine crawler, or to analyze bot behavior on your website.