General Info




National Wetlands Research Center, United States Geological Survey


AS22284 Department of the Interior, Office of theSecretary

United States


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Whois Details

NetHandle:      NET-159-189-0-0-1
OrgID:          NWRCSGS
Parent:         NET-159-0-0-0-0
NetName:        NWRC-USGS
NetRange: -
NetType:        assignment
RegDate:        1992-05-11
Updated:        2012-03-02
Source:         ARIN

OrgID:          NWRCSGS
OrgName:        National Wetlands Research Center, United States Geological Survey
Street:         12201 Sunrise Valley  Drive
City:           Reston
State/Prov:     VA
Country:        US
PostalCode:     20192
RegDate:        2000-04-24
Updated:        2015-04-15
OrgTechHandle:  HOSTM550-ARIN
OrgAdminHandle: HOSTM550-ARIN
OrgAbuseHandle: HOSTM550-ARIN
Source:         ARIN


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.