2620:82:8000::/48 - WEBTR-V6-NET1
AS11944 Webtrends Corporation
V6NetHandle: NET6-2620-82-8000-1 OrgID: WEBTR-2 Parent: NET6-2620-1 NetName: WEBTR-V6-NET1 NetRange: 2620:82:8000:: - 2620:82:8000:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 11944 RegDate: 2011-08-09 Updated: 2012-03-02 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.