ealmr's wiki

zmap -w IP.txt -p 80 -o 80.txt

cat 80.txt | banner-grab-tcp -c 1500 -d http-req -f ascii -p 80 -t 30 -r 30 > result.txt 

get IP by country

http://www.ip2location.com/free/visitor-blocker

wget ftp://ftp.apnic.net/public/apnic/stats/apnic/delegated-apnic-latest

IP lookup:

https://d3u5fqukq7qrhd.cloudfront.net/lookup/

http://geo.getiantem.org/lookup/