FYI: it might be better to search by port:23 https://www.shodan.io/search?query=port%3A23 https://www.shodan.io/search?query=port%3A23 Or to filter by product

FYI: it might be better to search by port:23 https://www.shodan.io/search?query=port%3A23 https://www.shodan.io/search?query=port%3A23 Or to filter by product:telnetd https://www.shodan.io/search?query=product%3Atelnetd https://www.shodan.io/search?query=product%3Atelnetd A query of "telnet" searches Shodan for banners where the "data" property contains the string "telnet": https://book.shodan.io/getting-started/query-syntax/ https://book.shodan.io/getting-started/query-syntax/