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
318,483
0.03% of hostnames
Disallow All
130,507
40% of mentions
Allow
31,290
9% of mentions
Disallow All
+ Allow Some
195
0% of mentions
Disallow Some
9,387
2% of mentions
Disallow Some
+ Allow Some
703
0% of mentions
No Directives
146,399
45% of mentions
Average Crawl Delay
29
(when set)