AS13543 City of Cookeville
2620:f4:c000::/48 - COOKEVILLE-IPV6-NET
V6NetHandle: NET6-2620-F4-C000-1 OrgID: CC-873 Parent: NET6-2620-1 NetName: COOKEVILLE-IPV6-NET NetRange: 2620:F4:C000:: - 2620:F4:C000:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 13543 Comment: http://www.cookeville-tn.gov RegDate: 2016-01-19 Updated: 2016-01-19 Source: ARIN OrgID: CC-873 OrgName: City of Cookeville CanAllocate: Street: 45 E Broad St City: Cookeville State/Prov: TN Country: US PostalCode: 38501 Comment: http://www.cookeville-tn.org RegDate: 2014-02-03 Updated: 2014-02-24 OrgTechHandle: CORDE21-ARIN OrgNOCHandle: STAMM1-ARIN OrgNOCHandle: CORDE21-ARIN OrgAdminHandle: CORDE21-ARIN OrgAbuseHandle: STAMM1-ARIN OrgAbuseHandle: CORDE21-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.