quote:

Whois IP 239.255.255.250
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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
OriginAS:
Organization: Internet Assigned Numbers Authority (IANA)
RegDate: 1991-05-22
Updated: 2013-08-30
Comment: Addresses starting with a number between 224 and 239 are used for IP multicast. IP multicast is a technology for efficiently sending the same content to multiple destinations. It is commonly used for distributing financial information and video streams, among other things.
Comment:
Comment: A full list of IPv4 multicast assignments can be found at:
Comment:
Comment: http://www.iana.org/assignments/multicast-addresses
Comment:
Comment: A document describing the policies for assigning multicast addresses can be found at:
Comment: http://datatracker.ietf.org/doc/rfc5771
Ref: https://whois.arin.net/rest/net/NET-224-0-0-0-1


OrgName: Internet Assigned Numbers Authority
OrgId: IANA
Address: 12025 Waterfront Drive
Address: Suite 300
City: Los Angeles
StateProv: CA
PostalCode: 90292
Country: US
RegDate:
Updated: 2012-08-31
Ref: https://whois.arin.net/rest/org/IANA


OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName: ICANN
OrgAbusePhone: +1-310-301-5820
OrgAbuseEmail: email@iana.org
OrgAbuseRef: https://whois.arin.net/rest/poc/IANA-IP-ARIN

OrgTechHandle: IANA-IP-ARIN
OrgTechName: ICANN
OrgTechPhone: +1-310-301-5820
OrgTechEmail: email@iana.org
OrgTechRef: https://whois.arin.net/rest/poc/IANA-IP-ARIN


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quote:

MTRACE.MCAST.NET

224.0.1.32 A multicast version of traceroute.


224.2.0.0-224.2.255.255 The Multicast Backbone on the Internet (MBONE) addresses are reserved for multimedia conference calls, i.e., audio, video, whiteboard, and shared web browsing between many people.


224.2.2.2 Port 9,875 on this address is used to broadcast the currently available MBONE programming. You can look at this with the X Window utility sdr or the Windows/Unix multikit program.


239.0.0.0-239.255.255.255 Administrative scope, in contrast to TTL scope, uses different ranges of multicast addresses to constrain multicast traffic to a particular region or group of routers. For example, the IP addresses from 239.178.0 to 239.178.255 might be an administrative scope for the state of New York. Data addressed to one of those addresses would not be forwarded outside of New York. The idea is to allow the possible group membership to be established in advance without relying on lessthan- reliable TTL values. The exact divisions of this range into particular scopes remains to be defined.

quote:

Originally posted by sigmonkey:
Your PC is broadcasting to that IP using Simple Service Discovery Protocol and or Plug and Play services.


Go to services and stop them and see if it helps.

You might need to disable them, then reboot.