2001:1938::/32 - HIGHWINDS6
V6NetHandle: NET6-2001-1938-1 OrgID: HNG-3 Parent: NET6-2001-1800-0 NetName: HIGHWINDS6 NetRange: 2001:1938:: - 2001:1938:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation RegDate: 2004-02-23 Updated: 2012-02-24 Source: ARIN OrgID: HNG-3 OrgName: Highwinds Network Group, Inc. CanAllocate: Street: 2021 McKinney Avenue Suite 1100 City: Dallas State/Prov: TX Country: US PostalCode: 75201 RegDate: 2006-12-21 Updated: 2018-03-02 OrgNOCHandle: HNOC5-ARIN OrgTechHandle: HIA3-ARIN OrgAdminHandle: HIA3-ARIN OrgAbuseHandle: HAR8-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.