The Duplicate IP Scanner
Tool scans your subnet (or a range within
your subnet) looking for duplicate IPv4
addresses in use by two or more devices. Any
duplicates found are shown with their IPv4
address, MAC address, network interface
manufacturer name and hostname.
is used for scanning and since ARP packets
are not routable, only the current subnet
can be scanned.
Purpose of this tool
The purpose of this tool is to
rapidly determine if any two or more devices are
sharing the same IPv4 address on a subnet. Devices
using the same IPv4 address confuse other devices
and make it difficult to route IP packet traffic to
the correct device. Duplicate IP addresses are
supposed to be found by the operating systems during
the DHCP address assignment process, but there may
be situations where a duplicate address is assigned
like when a 'rogue' DHCP server is added to a
Checks every IPv4
address in the range specified and looks for two or more
devices using the same IP address.
Scans the IPv4 devices in the subnet using ARP and
collects the responses. Any responses from different
devices using the same IPv4 address are noted and
Displays Duplicate IP Addresses along with the MAC
Addresses of the Duplicates.
all duplicates along with the IPv4 address, MAC of each
device, the manufacturer
of each remote device's network interface and the hostname for each IP address
A video of the Duplicate IP Scanner Tool in action!
Watch the Duplicate IP Scanner look for duplicate IP addresses on the local subnet.
Click below if the video does not appear automatically.
Copyright 1995-2016 Northwest Performance Software, Inc. DBA NetScanTools.com. All Rights Reserved.
'NetScanTools Pro', 'NetScanTools Standard', 'NetScanTools LE', 'NetScan', 'ipPulse', 'Northwest Performance Software' and 'NetScanTools.com'
are trademarks of Northwest Performance Software, Inc.
'NetScanTools' is a registered trademark of Northwest Performance Software, Inc.