AS5671 AT&T Corp.
188.8.131.52/19 - NETBLK-CDPD-CBLK3
NetHandle: NET-198-225-0-0-1 OrgID: SPC-10 Parent: NET-198-0-0-0-0 NetName: NETBLK-CDPD-CBLK3 NetRange: 184.108.40.206 - 220.127.116.11 NetType: assignment RegDate: 1993-07-09 Updated: 2005-01-11 TechHandle: WDSPC-ARIN Source: ARIN OrgID: SPC-10 OrgName: Service Provider Corporation CanAllocate: Street: PO Box 1381 City: Doylestown State/Prov: PA Country: US PostalCode: 18901-0137 Comment: Please visit wirelessdataspco.org for further information about contacting us. RegDate: 1993-07-09 Updated: 2014-09-30 OrgAdminHandle: SAWYE3-ARIN OrgNOCHandle: WDSPC-ARIN OrgAbuseHandle: WDSPC-ARIN OrgTechHandle: WDSPC-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.