AS23655 Snap Internet Limited
2406:e000:9800::/37 - SNAPNET-20070927
inet6num: 2406:e000:8000::/33 netname: SNAPNET-20070927 descr: Snap Internet Limited descr: Internet Service Provider descr: North Island country: NZ admin-c: MP212-AP tech-c: NO53-AP tech-c: MP212-AP status: ASSIGNED NON-PORTABLE mnt-by: MAINT-NZ-SNAP last-modified: 2018-02-06T22:18:38Z mnt-irt: IRT-2DEGREES-NZ source: APNIC irt: IRT-2DEGREES-NZ address: Two Degrees Mobile Limited address: Newmarket address: Auckland address: New Zealand e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: PH340-AP tech-c: PH340-AP auth: # Filtered mnt-by: MAINT-11-NZCOMMS last-modified: 2015-05-20T03:26:01Z source: APNIC person: James Burnett nic-hdl: MP212-AP e-mail: firstname.lastname@example.org address: Level 4, 2degrees House, 351 Lincoln Road, Addington, Christchurch phone: +64 3 345 7801 country: NZ mnt-by: MAINT-11-NZCOMMS last-modified: 2015-09-25T02:04:41Z source: APNIC
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.