NetHandle: NET-72-250-0-0-1 OrgID: TMOBI Parent: NET-72-0-0-0-0 NetName: TMOBILE-GPRS-I3 NetRange: 18.104.22.168 - 22.214.171.124 NetType: allocation RegDate: 2005-02-15 Updated: 2012-02-24 TechHandle: DNSAD11-ARIN Source: ARIN OrgID: TMOBI OrgName: T-Mobile USA, Inc. CanAllocate: Street: 12920 SE 38th Street City: Bellevue State/Prov: WA Country: US PostalCode: 98006 RegDate: 2003-01-02 Updated: 2017-01-28 OrgTechHandle: DNSAD11-ARIN OrgAbuseHandle: ABUSE4857-ARIN OrgAdminHandle: DNSAD11-ARIN Source: ARIN
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.