To check DHCP options on your computer download powershell script and run it as administrator.

The output should look like this:

PS C:\Install\DHCPOptions> .\ReadDhcpOptions.ps1
Reading DHCP options of NIC [00000001] Intel(R) 82579LM Gigabit Network Connection

  IP address : 172.20.32.137
  DHCP server: 172.20.1.41
  Options    :
  - 1 (Subnet Mask): 255.255.255.0
  - 3 (Router): ? 

  - 6 (Domain Server): 172.20.1.41
  - 15 (Domain Name): mydom.hr
  - 43 (vendor specific)
     - 220 (NAP-SoH): NAP
  - 51 (Address Time): 691200 seconds
  - 53 (DHCP Msg Type): 5 (DHCPACK)
  - 54 (DHCP Server Id): 10.4.65.20
  - 58 (Renewal Time): 345600 seconds
  - 59 (Rebinding Time): 604800 seconds
  - 81 (Client FQDN): 03 FF 00 00