Looks to be the device requesting DHCP is doing so on a 10.0.0.0 /24 network which is not within the subnet of the DHCP pool you have created. I've seen this when there is a LAN network address on the router of a different subnet it is communicating with or if there are multiple VLANS on the LAN and you are getting broadcast from a different network.
I would check and make sure that you do have a 10.10.11.1 interface and also to run a "debug arp" along with the "debug ip dhcp server" while a device is requesting a network address. This will show you which device is sending the ARP as it may be a switch or other device and not the phone. Also, check in the phone to make sure there is no default gateway or VLAN ID in the advanced settings as this will sometimes override which network it is requesting an address from.