Search  Search Site Become a Facebook Fan Follow us on Twitter NetScanTools Blog NetScanTools YouTube Channel
DHCP Discovery
Home Products Download Social Media Support Contact us About us Search SiteMap
  NetScanToolsŪ Pro
NetScanToolsŪ LE
NetScanToolsŪ Basic
NetScanToolsŪ Std
Switch Port Mapping Tool
Product Pricing
How to Buy
Press Resources
Get the NetScanTools Pro demo here.


NEVER scan a computer you do not own or have the owner's permission to scan.

- Last Review: May 4, 2016

Home > NetScanTools Pro > Technical Details > DHCP Discovery Tool

DHCP Discovery Tool Description - Detect DHCP Servers and Show What They are Offering.

About the DHCP Server Discovery Tool

The NetScanTools Pro DHCP Server Discovery tool detects IPv4 Dynamic Host Configuration Protocol (DHCP or DHCPv4) servers on each of your local network subnets. It shows all responding DHCP servers both legitimate and servers that are not supposed to be on your network (sometimes called rogue DHCP servers). It can find DHCP servers on every network segment attached through one or more network interfaces.

Related Tools

  • N/A

Explore NetScanTools >>
See tool videos >>
Download a free demo >>

click for image gallery

Version 11 DHCP Discovery Tool Slideshow

Important Notes:

  • This tool discovers DHCP Servers on local network segments (subnets) connected to each network interface.

  • Currently IPv4 only.

Download NetScanTools Pro

Purpose of the DHCP Server Discovery Tool:

  • The purpose of this tool is to help you find IPV4 DHCP Servers on each of your network interfaces and see the information they are offering in response to a DHCP_DISCOVER query. You can specify which network interface you want to use to detect DHCP servers. It works with both wired and wireless 802.11 interfaces.

Tool Capabilities

The fields the tool can decode and display from a DHCP_OFFER packet are shown in this table:

DHCP Server IP Address DHCP Server Hostname Offered IP Address
Offered Subnet Mask IP Address Lease Time Renewal Time
Rebinding Time Domain Name DNS IP Address
Router IP Address NTP Server IP Address  

The option requests shown in bold can be turned on or off. The MAC address of the sending interface is used when sending a DHCP_DISCOVER broadcast packet to DHCP servers.

A video of the DHCP Discover Tool

Home | About us | Contact us | Privacy Policy | Search | Site Map

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.