msnbot
by Microsoft
Search engine UA + IP range
Crawls pages for a traditional search index, which is what lets them rank.
Legacy Microsoft crawler used for search indexing, now largely superseded by Bingbot.
What it usually means
An older Microsoft crawler fetched this page for the Bing index.
How to identify it
User-Agent tokens
msnbot robots.txt stanza
User-agent: msnbot How it's verified
Published IP-range endpoints
Currently loaded ranges (sample) Refreshed Jul 20, 2026
157.55.39.0/24207.46.13.0/2440.77.167.0/2413.66.139.0/2413.66.144.0/2452.167.144.0/2413.67.10.16/2813.69.66.240/2813.71.172.224/28139.217.52.0/28 1 IP source configured
Reverse DNS suffixes
.search.msn.com Sources
More from Microsoft
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Baiduspider
Baidu Baidu's crawler for its search index.
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