Credit Kaeru in the header.

web/controls/DnsAddress.ascx

@@ -1,3 +1,5 @@
 <%@ Control Language="C#" AutoEventWireup="true" CodeBehind="DnsAddress.ascx.cs" Inherits="PkmnFoundations.Web.controls.DnsAddress" %>
 
-178.62.43.212
+178.62.43.212<asp:PlaceHolder ID="phAttribution" Visible="false" runat="server">
+    (<a href="https://kaeru.world/projects/wfc">Kaeru WFC</a>)
+</asp:PlaceHolder>

web/controls/DnsAddress.ascx.cs

@@ -13,5 +13,17 @@ namespace PkmnFoundations.Web.controls
         {
 
         }
+
+        public bool ShowAttribution
+        {
+            get
+            {
+                return phAttribution.Visible;
+            }
+            set
+            {
+                phAttribution.Visible = value;
+            }
+        }
     }
 }

web/controls/DnsAddress.ascx.designer.cs

@@ -3,7 +3,7 @@
 //     This code was generated by a tool.
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
-//     the code is regenerated.
+//     the code is regenerated. 
 // </auto-generated>
 //------------------------------------------------------------------------------
 
@@ -13,5 +13,14 @@ namespace PkmnFoundations.Web.controls
 
     public partial class DnsAddress
     {
+
+        /// <summary>
+        /// phAttribution control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.PlaceHolder phAttribution;
     }
 }

web/masters/MasterPage.master

@@ -36,7 +36,7 @@
 
             <div id="gtsHeadMain">
             <ul class="gtsHeadContent">
-                <li>DNS: <strong><pf:DnsAddress runat="server" /></strong></li>
+                <li>DNS: <strong><pf:DnsAddress ShowAttribution="true" runat="server" /></strong></li>
                 <li><asp:Literal ID="litPokemon" runat="server" />
                 Pokémon available for offer.</li>
                 <li><asp:Literal ID="litVideos" runat="server" />