2607:3d00::/28 - WIDEOPENWEST
V6NetHandle: NET6-2607-3D00-1 OrgID: WOPW Parent: NET6-2600-1 NetName: WIDEOPENWEST NetRange: 2607:3D00:: - 2607:3D0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 29737, 29895, 29859, 29780 Comment: Contact firstname.lastname@example.org for abuse requests. RegDate: 2012-03-28 Updated: 2018-08-27 TechHandle: KRB6-ARIN Source: ARIN OrgID: WOPW OrgName: WideOpenWest Finance LLC CanAllocate: Street: 1674 Frontenac Rd City: Naperville State/Prov: IL Country: US PostalCode: 60563 RegDate: 2002-04-10 Updated: 2018-08-29 OrgTechHandle: IPADM669-ARIN OrgAdminHandle: KRB6-ARIN OrgAbuseHandle: IPADM469-ARIN OrgTechHandle: UNIXA3-ARIN OrgNOCHandle: IPADM669-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.