Im running sygate, it blocks the following:

Blocked ICMP Outgoing 224.0.0.C:\WINDOWS\SYSTEM\MSGSRV32.EXE

Who is:

IANA (NET-MCAST-NET)
Internet Assigned Numbers Authority
4676 Admiralty Way, Suite 330
Marina del Rey, CA 90292-6695
US

Netname: MCAST-NET
Netblock: 224.0.0.0 - 239.255.255.255

Coordinator:
Internet Corporation for Assigned Names and Numbers (IANA-ARIN) res-ip@iana.org
(310) 823-9358

Domain System inverse mapping provided by:

FLAG.EP.NET 198.32.4.13
STRUL.STUPI.SE 192.108.200.1 192.36.143.3
NS.ISI.EDU 128.9.128.127
NIC.NEAR.NET 192.52.71.4

Is this who assigns my "IP" number for the net...? Should I allow this?