V6NetHandle: NET6-2607-9A00-1 OrgID: CALPO-4 Parent: NET6-2600-1 NetName: MULTA2 NetRange: 2607:9A00:: - 2607:9A00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 14542 RegDate: 2011-03-08 Updated: 2015-09-24 TechHandle: NOC1793-ARIN NOCHandle: NOC1793-ARIN AbuseHandle: NOC1793-ARIN Source: ARIN OrgID: CALPO-4 OrgName: CALPOP.COM, INC. CanAllocate: Street: 600 W. 7th Street Street: Suite 360 City: Los Angeles State/Prov: CA Country: US PostalCode: 90017 RegDate: 2009-03-17 Updated: 2015-08-11 ReferralServer: rwhois://rwhois.calpop.com:4321 OrgAdminHandle: NOC1793-ARIN OrgNOCHandle: NOC1793-ARIN OrgTechHandle: NOC1793-ARIN OrgAbuseHandle: ABUSE898-ARIN Source: ARIN
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.