NetHandle: NET-138-39-0-0-1 OrgID: DPL-1 Parent: NET-138-0-0-0-0 NetName: DELMARVA NetRange: 18.104.22.168 - 22.214.171.124 NetType: assignment RegDate: 1990-01-31 Updated: 2017-11-30 TechHandle: JKS23-ARIN TechHandle: NOC1756-ARIN TechHandle: ECRET-ARIN Source: ARIN OrgID: DPL-1 OrgName: Delmarva Power and Light Company CanAllocate: Street: PHI Service Co. Street: P.O. Box 6066 / MS 92DC88 City: Newark State/Prov: DE Country: US PostalCode: 19714-6066 RegDate: 1990-01-31 Updated: 2012-03-08 OrgTechHandle: JKS23-ARIN OrgTechHandle: ECRET-ARIN OrgAdminHandle: JKS23-ARIN OrgAbuseHandle: JKS23-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.