Fw: nmap bug

["james23" <james_liu () ms23 url com tw>]

Hi
Sorry ,My english is terrible.
I scan internet but it always crash by next command  
nmap -v -PN -sV --version-all 203.65.42.255 -p T:25,53,80,443,8080,1863,8000

It is same by IP 210.69.244.255 and 210.69.160.255
I think that it is .255   of the IP at the end.

I want to scan a big range ,but I can't know the .255 of the IP at the end is legal or  illegal. 
What can I do ? 

Best Regard


James

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