18.104.22.168/21 - NOWO
inetnum: 22.214.171.124 - 126.96.36.199 netname: NOWO descr: Viseu Residential Customers country: PT admin-c: CNT4-RIPE tech-c: CNT4-RIPE status: ASSIGNED PA remarks: INFRA-AW remarks: IMPORTANT: To report intrusion attempts, hacking, remarks: IMPORTANT: spamming, or other unaccepted behavior remarks: IMPORTANT: by a NOWO customer, please remarks: IMPORTANT: send a message to email@example.com mnt-by: AS13156-MNT mnt-lower: AS13156-MNT mnt-routes: AS13156-MNT created: 2008-01-24T12:40:11Z last-modified: 2018-02-09T15:41:27Z source: RIPE role: NOWO Network Team address: NOWO COMMUNICATIONS, S.A. address: Lugar de pocos address: Palmela address: Portugal phone: +351 21 080 10 80 fax-no: +351 21 080 10 01 e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: AL3206-RIPE admin-c: LP1252-RIPE admin-c: JR2638-RIPE tech-c: LP1252-RIPE tech-c: AL3206-RIPE tech-c: JR2638-RIPE nic-hdl: CNT4-RIPE mnt-by: AS13156-MNT created: 2003-12-12T22:40:41Z last-modified: 2018-02-12T10:13:17Z source: RIPE route: 188.8.131.52/15 descr: NOWO COMMUNICATIONS, S.A. descr: Internet Service Provider origin: AS13156 mnt-by: AS13156-MNT remarks: IMPORTANT: To report intrusion attempts, hacking, remarks: IMPORTANT: spamming, or other unaccepted behavior remarks: IMPORTANT: by a NOWO customer, please remarks: IMPORTANT: send a message to firstname.lastname@example.org created: 2004-05-28T17:28:27Z last-modified: 2018-02-09T17:41:42Z 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.