NetHandle: NET-139-181-0-0-1 OrgID: MGC-3 Parent: NET-139-0-0-0-0 NetName: MENTORG11 NetRange: 126.96.36.199 - 188.8.131.52 NetType: allocation RegDate: 1990-03-26 Updated: 2012-03-02 Source: ARIN OrgID: MGC-3 OrgName: Mentor Graphics Corporation CanAllocate: Street: 8005 SW Boeckman Road City: Wilsonville State/Prov: OR Country: US PostalCode: 97070-7777 RegDate: 1990-01-03 Updated: 2017-01-28 OrgTechHandle: MAT52-ARIN OrgAdminHandle: MAA23-ARIN OrgAbuseHandle: MAA24-ARIN 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.