www.estadodemexico.com.mx-nmap_results

Starting nmap V. 2.54BETA2 ( www.insecure.org/nmap/ )
Insufficient responses for TCP sequencing (3), OS detection will be MUCH less reliable
Interesting ports on na-148-243-159-184.na.avantel.net.mx (148.243.159.184):
Port       State       Service
80/tcp     open        http                    

Remote operating system guess: FreeBSD 2.2.1 - 4.1

Nmap run completed -- 1 IP address (1 host up) scanned in 6 seconds