NetHandle: NET-155-91-0-0-1 OrgID: MERCKA Parent: NET-155-0-0-0-0 NetName: MERCK1 NetRange: 188.8.131.52 - 184.108.40.206 NetType: assignment RegDate: 1991-10-31 Updated: 2006-01-12 TechHandle: AS213-ARIN Source: ARIN OrgID: MERCKA OrgName: Merck and Co., Inc. CanAllocate: Street: 126 East Lincoln Avenue City: Rahway State/Prov: NJ Country: US PostalCode: 07095 RegDate: 1992-03-17 Updated: 2005-12-21 OrgTechHandle: WHITE7-ARIN OrgAbuseHandle: WHITE7-ARIN OrgNOCHandle: WHITE7-ARIN OrgAdminHandle: WHITE7-ARIN Source: ARIN
IP Addresses in this 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.