About: http://webisa.webdatacommons.org/109229386

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In the case of messages which are transmitted with the source subnet set to zero, a check is done to determine if the domain length is also zero and if the message is a broadcast message, block 503.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com