2620:106:7000::/48 - SIELLC
V6NetHandle: NET6-2620-106-7000-1 OrgID: SIEL-2 Parent: NET6-2620-1 NetName: SIELLC NetRange: 2620:106:7000:: - 2620:106:70FF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment RegDate: 2011-08-04 Updated: 2018-09-25 Source: ARIN OrgID: SIEL-2 OrgName: Sony Interactive Entertainment LLC. CanAllocate: Street: 10075 Barnes Canyon Road City: San Diego State/Prov: CA Country: US PostalCode: 92121 RegDate: 2018-06-15 Updated: 2018-06-15 OrgNOCHandle: SIEWW-ARIN OrgAdminHandle: SIEWW-ARIN OrgAbuseHandle: SIEWW-ARIN OrgTechHandle: SIEWW-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.