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Q: 

[Networking] Is my computer hacked?

I am using windows 7, in commond prompt "arp -a"

Besides my wifi ip address, i will always see. Is my computer hacked?

149.171.11.255        ff-ff-ff-ff-ff-ff     static
224.0.0.22            01-00-5e-00-00-16     static
224.0.0.252           01-00-5e-00-00-fc     static
239.255.255.250       01-00-5e-7f-ff-fa     static
255.255.255.255       ff-ff-ff-ff-ff-ff     static

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