don't really know what to make out of this

[Hellfighter]

whoiswho>
The IP Address 239.255.255.250 falls within the Internet's
Private or Reserved IP Address Space.

If you have detected this address apparently assigned to a
remote computer, the IP address is in error or has been forged.

Details: This block, formerly known as the Class D address
space, is allocated for use in IPv4 multicast address
assignments. The IANA guidelines for assignments from this
space are described in [RFC3171].
==================================
security log:
2/25/2008 4:12:50 AM 32
Deny svchost
UDP
In
IP: 239.255.255.250
ISP: 64.24.220.237
Port: 1900
Blocked

========
all so check: whoiswho
OrgName: PaeTec Communications, Inc.
OrgID: PAET
Address: One PAETEC Plaza
Address: 600 Willowbrook Office Park
City: Fairport
StateProv: NY
PostalCode: 14450
Country: US

NetRange: 64.24.0.0 - 64.24.255.255
CIDR: 64.24.0.0/16
OriginAS: 4231, 4969, 1785, 15270
NetName: PAETECCOMM
NetHandle: NET-64-24-0-0-1
Parent: NET-64-0-0-0-0
NetType: Direct Allocation
NameServer: NS1.PAETEC.NET
NameServer: NS2.PAETEC.NET
NameServer: NS3.PAETEC.NET
Comment:
RegDate: 1999-12-29
Updated: 2007-09-20
OrgAbuseHandle: ABUSE741-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-877-340-2600
OrgAbuseEmail: abuse@paetec.com

OrgTechHandle: IP43-ARIN
OrgTechName: IP Administrator
OrgTechPhone: +1-877-340-2555
OrgTechEmail: ipadmin@paetec.com

don't know this is a hacker or what to make out of it, i block them from my system

[Hellfighter]

Application:SYSTEM
Direction: In
Local IP: 64.24.220.112
Remote IP: 67.223.130.202
Status/Bytes: RECV/75
Dated & Time: 2/25/2008 3:57:09
Descriription: AMICMP_ECHO(echo service)|RT:9|No.2 ICMP Rules
Full path: SYSTEM


reason block:

Port: 1090 Blocks Trojan: Extreme
====================
whoiswho: BTW totally clueless
No Default Regional Internet Registry was found for IP
Address.67.223.130.202

This may mean the IP Address has not yet been allocated to
any RIR, and should not be used on the Internet.

If this address has been used on the public Internet, it may
mean this program's 'C:\Documents and Settings\All
Users\Application Data\Karen's Power Tools\WhoIs\RirInfo2.dat
file is out-of-date. You are using version 2007/07/27 13:45:46

[Xx_jet_xX]

Final results obtained from whois.arin.net.
Results:

OrgName: Internet Assigned Numbers Authority
OrgID: IANA
Address: 4676 Admiralty Way, Suite 330
City: Marina del Rey
StateProv: CA
PostalCode: 90292-6695
Country: US

NetRange: 224.0.0.0 - 239.255.255.255
CIDR: 224.0.0.0/4
NetName: MCAST-NET
NetHandle: NET-224-0-0-0-1
Parent:
NetType: IANA Special Use
NameServer: FLAG.EP.NET
NameServer: STRUL.STUPI.SE
NameServer: NS.ISI.EDU
NameServer: NIC.NEAR.NET
Comment: This block is reserved for special purposes.
Comment: Please see RFC 3171 for additional information.
Comment:
RegDate: 1991-05-22
Updated: 2002-09-16

OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName: Internet Corporation for Assigned Names and Number
OrgAbusePhone: +1-310-301-5820
OrgAbuseEmail: abuse@iana.org

OrgTechHandle: IANA-IP-ARIN
OrgTechName: Internet Corporation for Assigned Names and Number
OrgTechPhone: +1-310-301-5820
OrgTechEmail: abuse@iana.org

# ARIN WHOIS database, last updated 2008-02-24 19:10
# Enter ? for additional hints on searching ARIN's WHOIS database.

send an email with the info you got to this ones abuse@iana.org