Bot IP: 157.55.39.49

Name: Bot IP Lookup: 157.55.39.49 (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: 139
⏱️ Age: 14343h

Penalties

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

Total visits: 139 First seen: Apr 24th, 2024 4:07 AM Last seen: Dec 12th, 2025 7:23 PM

Known Hostname(s)

msnbot-157-55-39-49.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 for the Bing search engine. Its visits are typically for the purpose of indexing website content so that pages can appear in Bing search results. The recent activity from IP address 157.55.39.49 shows requests to various site pages and sitemaps, which is consistent with standard search engine crawling behavior. If a website is publicly accessible, search engine bots like bingbot may visit it regularly to keep their search indexes up to date. To manage or control bingbot's access, consider updating your robots.txt file, monitoring server logs for unusual activity, and using allow/block lists as needed.

What does bingbot do?

Bingbot systematically scans and indexes web pages for inclusion in the Bing search engine. It follows links, reads content, and processes sitemaps to understand website structure and updates. The user agent and reverse DNS for 157.55.39.49 indicate it is identifying as bingbot, and the hostname resolves to msnbot-157-55-39-49.search.msn.com, which aligns with Microsoft's documented crawler infrastructure. To verify bingbot, perform a reverse DNS lookup and confirm the hostname ends with 'search.msn.com', then forward-resolve it to the same IP. Website owners can control bingbot's behavior using the robots.txt protocol, monitor crawl frequency, and adjust server settings if needed.

Is bingbot safe?

Bingbot is generally considered safe and is a legitimate crawler used by Microsoft Bing. Its activity is typically non-malicious and focused on indexing content for search. However, as with any automated traffic, it is important to verify authenticity. Confirm the bot's identity by checking the user agent string, performing reverse DNS lookups to ensure the hostname ends with 'search.msn.com', and matching the forward DNS to the originating IP. To mitigate potential issues, use robots.txt to set crawl rules, monitor for excessive requests, implement rate limiting if necessary, and consider adding bingbot to allow or block lists based on site requirements.

This page provides a detailed lookup for the bot with the IP address of 157.55.39.49, 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.