AS7018 AT&T Services, Inc.
220.127.116.11/19 - BLS-68-158-0-0
NetHandle: NET-68-158-0-0-1 OrgID: C02435373 Parent: NET-68-152-0-0-1 NetName: BLS-68-158-0-0 NetRange: 18.104.22.168 - 22.214.171.124 NetType: reassignment RegDate: 2010-03-03 Updated: 2010-11-05 Source: ARIN OrgID: C02435373 OrgName: ATL ADSL PPP CanAllocate: Street: 575 Morosgo Dr. NE City: Atlanta State/Prov: GA Country: US PostalCode: 30324 RegDate: 2010-03-03 Updated: 2018-09-10 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.