2a01:8840:4f::/48 - IE-AFILIAS-LTD
inet6num: 2a01,8840,,/32 netname: IE-AFILIAS-LTD country: IE org: ORG-AL250-RIPE admin-c: AFAR-RIPE tech-c: AFTR-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-lower: MAINT-AFILIAS mnt-routes: MAINT-AFILIAS notify: firstname.lastname@example.org mnt-domains: MAINT-AFILIAS created: 2012-07-11T12,43,46Z last-modified: 2016-04-14T10,43,56Z source: RIPE organisation: ORG-AL250-RIPE org-name: Afilias Ltd org-type: LIR address: 3 Harbourmaster Place IFSC address: D01 K8F1 address: Dublin address: IRELAND e-mail: email@example.com abuse-c: AR15499-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: MAINT-AFILIAS mnt-by: RIPE-NCC-HM-MNT created: 2012-07-10T12,52,18Z last-modified: 2015-11-18T15,33,55Z source: RIPE phone: +35318541100 fax-no: +35317918569 role: Afilias TLD Operations - Administrative Role account address: 2 La Touche House address: IFSC address: Dublin 1 address: Ireland e-mail: firstname.lastname@example.org admin-c: AFAR-RIPE tech-c: AFAR-RIPE nic-hdl: AFAR-RIPE mnt-by: PV51549-MNT mnt-by: MAINT-AFILIAS created: 2012-06-13T22,01,13Z last-modified: 2012-06-13T22,54,30Z source: RIPE role: Afilias TLD Operations - Technical Role account address: 2 La Touche House address: IFSC address: Dublin 1 address: Ireland e-mail: email@example.com admin-c: AFTR-RIPE tech-c: AFTR-RIPE nic-hdl: AFTR-RIPE mnt-by: PV51549-MNT mnt-by: MAINT-AFILIAS created: 2012-06-13T22,30,47Z last-modified: 2012-06-13T22,54,01Z source: RIPE route6: 2a01,8840,,/32 descr: Afilias Ltd RIPE IPv6 Route object origin: AS12041 mnt-by: MAINT-AFILIAS created: 2012-07-12T09,51,20Z last-modified: 2012-07-12T09,51,20Z source: RIPE
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.