Unrecognized IPs on my network.

I have IPs on my network that I don't recognize. Should I be posting this elsewhere?

What are they?

Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\e>arp -a

Interface: 192.168.1.164 --- 0xb

Internet Address Physical Address Type

224.0.0.22................01-00-5e-00-00-16....static

224.0.0.251...............01-00-5e-00-00-fb....static

224.0.0.252...............01-00-5e-00-00-fc....static

239.255.255.250........01-00-5e-7f-ff-fa......static

239.255.255.253........01-00-5e-7f-ff-fd......static

255.255.255.255........ff-ff-ff-ff-ff-ff............static

C:\Users\e>