With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swDHCPServerPoolDomainName
Switch DHCP Server Pool Domain Name
1.3.6.1.4.1.171.12.38.3.2.1.1.4
The domain name for the client if the server allocates the address for the client from this pool.
Back to DHCP-Server-MIB MIB page.
IPHost Network monitor allows you to monitor swDHCPServerPoolDomainName on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link VPN routers right now.