2607:b600::/48 - SPC-NET1
V6NetHandle: NET6-2607-B600-1 OrgID: SINGL-15 Parent: NET6-2600-1 NetName: SPC-NET1 NetRange: 2607:B600:: - 2607:B600:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 10397 RegDate: 2011-03-09 Updated: 2011-03-09 Source: ARIN OrgID: SINGL-15 OrgName: SinglePipe LLC CanAllocate: Street: 250 W. Main St Street: Suite 1920 City: Lexington State/Prov: KY Country: US PostalCode: 40507 RegDate: 2009-04-01 Updated: 2016-01-26 OrgAbuseHandle: IBBSN-ARIN OrgNOCHandle: IBBSN-ARIN OrgTechHandle: IBBSN-ARIN OrgAdminHandle: NETWO1770-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.