Entries in "Access" which I've not created myself

This morning, under "Access" I've found several connections which have not been created by myself:

These are the funny entries:

Name:WIN-U9ELNVPPAD0
Organization:
Hosts Connected:
Guests Connected:
Guest Last Connected:2h 48m
Logged On User: WIN-U9ELNVPPAD0
Idle Time:2h 54m
Machine:WORKGROUP\WIN-U9ELNVPPAD0
Operating System:Windows 7 Professional (6.1.7601)
Processor(s):Intel(R) Xeon(R) CPU X5550 @ 2.67GHz (1 virtual)
Available Memory:1635 MB / 2047 MB
Network Address:80.130.94.223
Client Version:6.6.18120.6697
Now
12-12 08:07:19
12-12 05:24:43
12-12 05:21:22
12-12 05:21:22
Guest

Name:ODOMTDWGTKC
Organization:
Hosts Connected:
Guests Connected:
Guest Last Connected:2h 52m
Logged On User:ODOMTDWGTKC\Administrator
Idle Time:2h 54m
Machine:WORKGROUP\ODOMTDWGTKC
Operating System:Windows 7 Professional (6.1.7601)
Processor(s):Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz (2 virtual)
Available Memory:1035 MB / 2047 MB
Network Address:80.130.94.223
Client Version:6.6.18120.6697
Now
12-12 08:07:28
12-12 05:24:09
12-12 05:21:40
12-12 05:21:40
Guest

Name:
Organization:
Hosts Connected:
Guests Connected:
Guest Last Connected:4h 4m
Logged On User:
Idle Time:
Machine:
Operating System:
Processor(s):
Available Memory:
Network Address:71.138.129.33
Client Version:6.6.18120.6697
Now
12-12 08:07:10
12-12 04:11:36
12-12 04:08:22
Guest