Identify which portion of the below host IP addresses are invalid and explain why it is invalid. Hint: If you aren't sure, convert to binary then answer.
1. 131.107.256.80
2. 222.222.255.222
3. 231.200.1.1
4. 126.1.0.0
5. 0.127.4.100
6. 190.7.2.0
7. 127.1.1.1
8. 198.121.254.255
9. 255.255.255.255
10. 1.1.1.1