AS15135 Oracle Corporation
2001:500:96::/48 - DYNINC-IPV6-MICRO1
V6NetHandle: NET6-2001-500-90-2 OrgID: DNS-33 Parent: NET6-2001-500-90-1 NetName: DYNINC-IPV6-MICRO1 NetRange: 2001:500:90:: - 2001:500:97:FFFF:FFFF:FFFF:FFFF:FFFF NetType: reassignment OriginAS: 33517 RegDate: 2018-07-02 Updated: 2018-07-02 Source: ARIN OrgID: DNS-33 OrgName: Dynamic Network Services, Inc. CanAllocate: Street: 150 Dow St. City: Manchester State/Prov: NH Country: US PostalCode: 03101 RegDate: 2004-01-06 Updated: 2018-06-30 OrgTechHandle: IAA29-ARIN OrgNOCHandle: NOC1473-ARIN OrgAdminHandle: IAA29-ARIN OrgAbuseHandle: ABUSE514-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.