inetnum: 18.104.22.168 - 22.214.171.124 netname: IAS-16-004-0777-1 descr: T-Systems International descr: Saonestr. 3 descr: 60528 Frankfurt; Germany descr: Address Range for Viessmann IT Services GmbH remarks: country: DE admin-c: TL4899-RIPE tech-c: TL4899-RIPE status: ASSIGNED PA mnt-domains: DE-TSBS-R-MNT mnt-by: DE-TSBS-A-MNT notify: email@example.com created: 2016-07-11T09,16,21Z last-modified: 2016-07-11T09,16,21Z source: RIPE person: Theo Leyhe address: Viessmann IT Service GmbH address: Viessmannstrasse 1 address: D-35108 Allendorf phone: +49 6452703321 e-mail: firstname.lastname@example.org nic-hdl: TL4899-RIPE mnt-by: DE-TSI-MNT notify: email@example.com created: 2016-07-11T09,13,34Z last-modified: 2016-07-11T09,13,34Z source: RIPE route: 126.96.36.199/22 descr: T-Systems International descr: for IAS origin: AS48951 mnt-by: DE-TSBS-R-MNT notify: firstname.lastname@example.org created: 2012-12-04T16,13,47Z last-modified: 2012-12-04T16,13,47Z source: RIPE
IP address subranges within this IP range
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.