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
461,520
0.03% of hostnames
Disallow All
162,998
35% of mentions
Allow
98,740
21% of mentions
Disallow All
+ Allow Some
271
0% of mentions
Disallow Some
14,455
3% of mentions
Disallow Some
+ Allow Some
1,174
0% of mentions
No Directives
183,881
39% of mentions
Average Crawl Delay
28
(when set)