Bot IP: 157.55.39.200

Name: Bot IP Lookup: 157.55.39.200 (Bingbot)
Creator: Track-A-Bot

Bot Name: Bingbot

Bingbot is the primary web crawler used by Microsoft Bing to discover and index web content for its search engine results.

Likely legitimate

Track-A-Bot Trust Score: 87/100

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
ℹ️ Hostname status not verified
✅ No hostname mismatch flags

Behavior

ℹ️ No /robots.txt request observed
✅ No referrer (typical crawler behavior)
✅ Mostly 200/304 responses
📌 Visits: 150
⏱️ Age: 14370h

Penalties

✅ No major spoof pattern
✅ No fingerprint fields
✅ Cookies not enabled
✅ No connection type

Total visits: 150 First seen: Apr 23rd, 2024 1:15 AM Last seen: Dec 12th, 2025 7:23 PM

Known Hostname(s)

msnbot-157-55-39-200.search.msn.com

Known User Agent(s)

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36

Known Accepted Encoding(s)

gzip, deflate, br

Common User-Agent Tokens

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

Token

Seen

First seen

Last seen

bingbot/2.0

40,280

3/17/24

12/12/25

bingbot/2.0 40,280 seen

First 3/17/24

Last 12/12/25

mobile/15e148

1/26/25

12/12/25

mobile/15e148 13 seen

First 1/26/25

Last 12/12/25

17_1

2/26/25

12/12/25

17_1 3 seen

First 2/26/25

Last 12/12/25

17_2

1/26/25

12/12/25

17_2 3 seen

First 1/26/25

Last 12/12/25

microsoftpreview/2.0

12/12/25

microsoftpreview/2.0 3 seen

First 12/12/25

Last 12/12/25

unknown

12/12/25

unknown 3 seen

First 12/12/25

Last 12/12/25

10_15_7

5/7/25

12/12/25

10_15_7 2 seen

First 5/7/25

Last 12/12/25

17_0

4/10/25

17_0 2 seen

First 4/10/25

Last 4/10/25

17_3

12/12/25

17_3 2 seen

First 12/12/25

Last 12/12/25

18_1_1

4/29/25

5/2/25

18_1_1 2 seen

First 4/29/25

Last 5/2/25

adidxbot/2.0

10/21/25

10/22/25

adidxbot/2.0 2 seen

First 10/21/25

Last 10/22/25

crios/131.0.6778.73

4/29/25

crios/131.0.6778.73 2 seen

First 4/29/25

Last 4/29/25

gecko/20100101

2/18/25

12/12/25

gecko/20100101 2 seen

First 2/18/25

Last 12/12/25

unique/97.7.7286.70

1/27/25

12/12/25

unique/97.7.7286.70 2 seen

First 1/27/25

Last 12/12/25

17_5_1

4/28/25

17_5_1 1 seen

First 4/28/25

Last 4/28/25

avastsecurebrowser/5.3.1

12/12/25

avastsecurebrowser/5.3.1 1 seen

First 12/12/25

Last 12/12/25

build/mmb29p

12/11/25

build/mmb29p 1 seen

First 12/11/25

Last 12/11/25

crios/122.0.6261.62

12/12/25

crios/122.0.6261.62 1 seen

First 12/12/25

Last 12/12/25

edga/121.0.0.0

2/20/25

edga/121.0.0.0 1 seen

First 2/20/25

Last 2/20/25

edgios/116.0.1938.56

3/1/25

edgios/116.0.1938.56 1 seen

First 3/1/25

Last 3/1/25

edgios/116.0.1938.79

4/10/25

edgios/116.0.1938.79 1 seen

First 4/10/25

Last 4/10/25

edgios/118.0.2088.68

2/26/25

edgios/118.0.2088.68 1 seen

First 2/26/25

Last 2/26/25

edgios/119.0.2151.78

12/12/25

edgios/119.0.2151.78 1 seen

First 12/12/25

Last 12/12/25

edgios/120.0.2210.126

12/12/25

edgios/120.0.2210.126 1 seen

First 12/12/25

Last 12/12/25

edgios/120.0.2210.141

2/25/25

edgios/120.0.2210.141 1 seen

First 2/25/25

Last 2/25/25

edgios/120.0.2210.86

1/26/25

edgios/120.0.2210.86 1 seen

First 1/26/25

Last 1/26/25

edgios/121.0.2277.107

12/12/25

edgios/121.0.2277.107 1 seen

First 12/12/25

Last 12/12/25

trailer/93.3.3516.28

4/16/25

trailer/93.3.3516.28 1 seen

First 4/16/25

Last 4/16/25

viewer/99.9.9009.89

12/12/25

viewer/99.9.9009.89 1 seen

First 12/12/25

Last 12/12/25

Identity Links

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

URL

Seen

First seen

Last seen

www.bing.com/bingbot.htm

40,282

3/17/24

12/12/25

www.bing.com/bingbot.htm 40,282 seen www.bing.com

First 3/17/24

Last 12/12/25

aka.ms/MicrosoftPreview

12/12/25

aka.ms/MicrosoftPreview 3 seen aka.ms

First 12/12/25

Last 12/12/25

Bot FAQ for this IP

Why is bingbot visiting my website?

Bingbot is a web crawler operated by Microsoft and is responsible for indexing content for the Bing search engine. Visits from bingbot, such as those from IP address 157.55.39.200, are typically part of the process of discovering and updating search engine listings. The bot accesses various pages on a website to gather information for Bing's search results. Verification steps include checking the user agent string (e.g., 'bingbot/2.0'), confirming the reverse DNS resolves to a Microsoft-owned domain (such as 'msnbot-157-55-39-200.search.msn.com'), and reviewing request patterns for consistency with known bingbot behavior. To manage bingbot's access, consider using robots.txt directives, monitoring server logs, and implementing rate limiting if necessary.

What does bingbot do?

Bingbot systematically crawls publicly accessible web pages to collect and update information for the Bing search engine index. This process helps ensure that Bing's search results are current and relevant. Bingbot identifies itself with a specific user agent and typically follows the rules set in a site's robots.txt file. The bot may visit multiple pages in quick succession, as seen in the recent activity from IP 157.55.39.200. To verify genuine bingbot activity, perform a reverse DNS lookup to confirm the hostname belongs to Microsoft, check the user agent string, and monitor for expected crawling patterns. If needed, adjust robots.txt settings or use firewall rules to control access.

Is bingbot safe?

Bingbot is generally considered safe and is a legitimate crawler operated by Microsoft for the Bing search engine. However, it is important to verify that requests are genuinely from bingbot, as some malicious actors may spoof its user agent. Recommended verification steps include: (1) performing a reverse DNS lookup to ensure the IP resolves to a Microsoft domain, (2) checking that the user agent matches official bingbot documentation, (3) monitoring request frequency for abnormal patterns, and (4) using robots.txt to manage crawl permissions. If unwanted or excessive crawling is observed, consider implementing rate limiting or updating firewall rules.

This page provides a detailed lookup for the bot with the IP address of 157.55.39.200, 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.