FIGS. 1A-1C are simplified examples of communication systems 100 that may be used to implement a managed network service in accordance with some embodiments. In the example illustrated in FIG. 1A, the communication system 100 may include a UE device 102, a personal computer 104, a DNS server 106, a web server 107, and a DNS administrator 108 that may be coupled directly or indirectly to the communication network 110 via wired or wireless communication links 112-122, base stations 124 and/or customer premise equipment (CPE) 126. The DNS server 106 may include or have access to various databases, such as the illustrated public IP address datastore 130, the source client list datastore 132, and the fully qualified domain name (FQDN) mappings datastore 134.

The CPE 126 device may include a cable modem, digital subscriber line modem, router, switch, firewall, packet filter, wireless access point, and/or a residential gateway that provides network connectivity to a home or small office network. In particular, the CPE 126 device may allow UE devices (e.g., UE device 102) on the local area network (LAN) to connect to a wide area network (WAN) and ultimately the Internet.