AS16430 University of Southern Mississippi
2620:f4:4000::/40 - USM
V6NetHandle: NET6-2620-F4-4000-1 OrgID: USM-2 Parent: NET6-2620-1 NetName: USM NetRange: 2620:F4:4000:: - 2620:F4:40FF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 16430 RegDate: 2016-01-15 Updated: 2016-01-21 Source: ARIN OrgID: USM-2 OrgName: University of Southern Mississippi CanAllocate: Street: 118 College Drive Box 5181 City: Hattiesburg State/Prov: MS Country: US PostalCode: 39406 RegDate: 1988-11-01 Updated: 2012-09-14 OrgTechHandle: ZU66-ARIN OrgAdminHandle: ZU66-ARIN OrgAbuseHandle: ZU66-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.