AS2386 AT&T Data Communications Services
220.127.116.11/24 - ATTENS-008939-002239
NetHandle: NET-63-240-120-0-1 OrgID: C00622985 Parent: NET-63-240-0-0-1 NetName: ATTENS-008939-002239 NetRange: 18.104.22.168 - 22.214.171.124 NetType: reassignment Comment: CERF-HM-ARIN RegDate: 2003-07-08 Updated: 2003-07-08 Source: ARIN OrgID: C00622985 OrgName: AT&T Managed Firewall Services NB2 CanAllocate: Street: 15B53 55 Corporate Drive City: Bridgewater State/Prov: NJ Country: US PostalCode: 08807 RegDate: 2003-07-08 Updated: 2011-03-19 Source: ARIN
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.