NetHandle: NET-45-74-128-0-2 OrgID: C05699481 Parent: NET-45-74-128-0-1 NetName: ACN-BB-CANADA-45-74-128--18 NetRange: 188.8.131.52 - 184.108.40.206 NetType: reassignment OriginAS: 19397 RegDate: 2015-04-28 Updated: 2015-04-28 Source: ARIN OrgID: C05699481 OrgName: ACN CanAllocate: Street: 1100 Ave. des Canadiens de Montreal City: Montreal State/Prov: QC Country: CA PostalCode: H3B 2S2 RegDate: 2015-04-27 Updated: 2015-04-27 Source: ARIN
IP address subranges within this IP range
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.