import socket

ips = []

with open('ips.txt', 'w') as out:
    for line in open('domains.txt'):
        l = line.strip()

        if l.startswith('#') or l == '':
            continue

        ips.append(socket.gethostbyname(l))
    
    ips = list(dict.fromkeys(ips))

    for ip in ips:
        out.write(ip + '\n')