2620:0:2830::/48 - ICANN-DC-IPV6
V6NetHandle: NET6-2620-2830-1 OrgID: ICANN Parent: NET6-2620-1 NetName: ICANN-DC-IPV6 NetRange: 2620:0:2830:: - 2620:0:2830:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 16876 RegDate: 2009-07-14 Updated: 2012-02-24 Source: ARIN OrgID: ICANN OrgName: ICANN CanAllocate: Street: 12025 Waterfront Dr. Street: Suite 300 City: Los Angeles State/Prov: CA Country: US PostalCode: 90094 RegDate: 2001-03-30 Updated: 2019-05-31 OrgTechHandle: MANDE13-ARIN OrgTechHandle: KARAD8-ARIN OrgTechHandle: JENKI373-ARIN OrgTechHandle: DSO63-ARIN OrgTechHandle: DCL131-ARIN OrgAdminHandle: JENKI373-ARIN OrgAbuseHandle: ICANN-NET Source: ARIN POCHandle: JENKI373-ARIN IsRole: N LastName: Jenkins FirstName: Josh Street: 12025 Waterfront Dr Street: Suite 300 City: Los Angeles State/Prov: CA Country: US PostalCode: 90094 RegDate: 2018-04-04 Updated: 2019-04-12 OfficePhone: +1-310-578-8699 Mailbox: firstname.lastname@example.org Source: ARIN POCHandle: ICANN-NET IsRole: Y LastName: Internet Corporation for Assigned Names and Number FirstName: Street: 12025 Waterfront Dr. Street: Suite 300 City: Los Angeles State/Prov: CA Country: US PostalCode: 90094 RegDate: 2001-06-26 Updated: 2018-10-15 OfficePhone: +1-310-301-3889 Mailbox: email@example.com 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.