188.8.131.52/24 - PREBON-AMS
inetnum: 184.108.40.206 - 220.127.116.11 netname: PREBON-AMS descr: Tullett Prebon Group Ltd org: ORG-TPGL1-RIPE country: SG admin-c: GDNT1-RIPE tech-c: GDNT1-RIPE mnt-by: RIPE-NCC-END-MNT mnt-by: TULLETT-MNT status: ASSIGNED PI created: 1970-01-01T00:00:00Z last-modified: 2016-04-14T09:54:43Z source: RIPE organisation: ORG-TPGL1-RIPE org-name: Tullett Prebon Group Ltd org-type: LIR address: Tullett Prebon Group Ltd address: Warren Griffiths address: 155 Bishopsgate address: EC2M 3TQ address: London address: UNITED KINGDOM phone: +442072007437 fax-no: +442072007309 e-mail: email@example.com abuse-c: AR17956-RIPE mnt-ref: TULLETT-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT created: 2013-05-03T13:27:19Z last-modified: 2013-12-18T14:39:51Z source: RIPE person: Global Data Network Team address: Tullett Prebon Group Limited address: 155 Bishopsgate address: London address: EC2M 3TQ address: UK phone: +44 (0)20 7200 7779 fax-no: +44 (0)20 7895 0819 e-mail: firstname.lastname@example.org nic-hdl: GDNT1-RIPE notify: email@example.com mnt-by: TULLETT-MNT created: 2003-10-01T10:11:08Z last-modified: 2013-06-15T19:05:20Z source: RIPE route: 18.104.22.168/24 descr: PREBON-AMS origin: AS29400 mnt-by: TULLETT-MNT created: 2013-06-15T19:18:36Z last-modified: 2013-06-15T19:18:36Z source: RIPE
IP Addresses in this 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.