V6NetHandle: NET6-2620-106-B000-1 OrgID: MLBAML Parent: NET6-2620-1 NetName: MLBAMLV6 NetRange: 2620:106:B000:: - 2620:106:B00F:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 11880, 11251 RegDate: 2011-08-24 Updated: 2012-03-02 Source: ARIN OrgID: MLBAML OrgName: Major League Baseball Advanced Media, LP CanAllocate: Street: 75 Ninth Avenue Street: 5th Floor City: New York State/Prov: NY Country: US PostalCode: 10011 RegDate: 2001-09-26 Updated: 2010-11-15 OrgAdminHandle: KPA34-ARIN OrgTechHandle: KPA34-ARIN OrgTechHandle: NETWO879-ARIN OrgAbuseHandle: NETWO879-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.