Note According to RFC 9309 standard (2.2.1), this user-agent name is technically incorrect.

Non-Standard User-Agent Name

Sogou inst spider

Mentions
335,888
0.03% of hostnames
Disallow All
138,674
41% of mentions
Allow
33,051
9% of mentions
Disallow All
+ Allow Some
198
0% of mentions
Disallow Some
8,807
2% of mentions
Disallow Some
+ Allow Some
731
0% of mentions
No Directives
154,425
45% of mentions
Average Crawl Delay
25
(when set)