diff --git a/pywb/framework/proxy.py b/pywb/framework/proxy.py
index 315594c9..ba6d3266 100644
--- a/pywb/framework/proxy.py
+++ b/pywb/framework/proxy.py
@@ -55,6 +55,7 @@ class ProxyRouter(object):
 
     PAC_PATH = '/proxy.pac'
     BLOCK_SIZE = 4096
+    DEF_MAGIC_NAME = 'pywb.proxy'
 
     def __init__(self, routes, **kwargs):
         self.hostpaths = kwargs.get('hostpaths')
@@ -65,13 +66,16 @@ class ProxyRouter(object):
         if proxy_options:
             proxy_options = proxy_options.get('proxy_options', {})
 
+        self.magic_name = proxy_options.get('magic_name')
+        if not self.magic_name:
+            self.magic_name = self.DEF_MAGIC_NAME
+            proxy_options['magic_name'] = self.magic_name
+
         if proxy_options.get('cookie_resolver'):
             self.resolver = CookieResolver(routes, proxy_options)
         else:
             self.resolver = ProxyAuthResolver(routes, proxy_options)
 
-        self.magic_name = proxy_options.get('magic_name', 'pywb-proxy.com')
-
         self.insert_banner = proxy_options.get('banner_only_replay', False)
         self.unaltered = proxy_options.get('unaltered_replay', False)
 
@@ -134,10 +138,10 @@ class ProxyRouter(object):
             if parts.query:
                 env['pywb.proxy_req_uri'] += '?' + parts.query
 
-        # static
-        static_prefix = 'static.' + self.magic_name
+        # select prefix
+        env['pywb_proxy_select'] = 'select.' + self.magic_name
 
-        if env['pywb.proxy_host'] == static_prefix:
+        if env['pywb.proxy_host'] == self.magic_name:
             env['REL_REQUEST_URI'] = env['pywb.proxy_req_uri']
             return None
 
@@ -147,13 +151,12 @@ class ProxyRouter(object):
             if response:
                 return response
 
-        host_prefix = env['pywb.proxy_scheme'] + '://' + static_prefix
+        host_prefix = env['pywb.proxy_scheme'] + '://' + self.magic_name
 
         wbrequest = route.request_class(env,
                               request_uri=url,
                               wb_url_str=url,
                               coll=coll,
-            #                  host_prefix=self.hostpaths[0],
                               host_prefix=host_prefix,
                               wburl_class=route.handler.get_wburl_type(),
                               urlrewriter_class=HttpsUrlRewriter,
diff --git a/pywb/framework/proxy_resolvers.py b/pywb/framework/proxy_resolvers.py
index 1b33be01..9062bafd 100644
--- a/pywb/framework/proxy_resolvers.py
+++ b/pywb/framework/proxy_resolvers.py
@@ -119,7 +119,7 @@ class CookieResolver(BaseCollResolver):  # pragma: no cover
     def __init__(self, routes, config):
         config['pre_connect'] = False
         super(CookieResolver, self).__init__(routes, config)
-        self.magic_name = config.get('magic_name', 'pywb-proxy.com')
+        self.magic_name = config['magic_name']
         self.cookie_name = config.get('cookie_name', '__pywb_coll')
         self.proxy_select_view = config.get('proxy_select_view')
 
diff --git a/pywb/framework/wsgi_wrappers.py b/pywb/framework/wsgi_wrappers.py
index 85e23aaa..d1a4f772 100644
--- a/pywb/framework/wsgi_wrappers.py
+++ b/pywb/framework/wsgi_wrappers.py
@@ -135,14 +135,12 @@ class WSGIApp(object):
             logging.info(err_msg)
             err_details = None
 
-        is_proxy_mode = env.get('pywb.proxy_host') is not None
-
         if error_view:
             return error_view.render_response(exc_type=type(exc).__name__,
                                               err_msg=err_msg,
                                               err_details=err_details,
                                               status=status,
-                                              is_proxy_mode=is_proxy_mode,
+                                              env=env,
                                               err_url=err_url)
         else:
             return WbResponse.text_response(status + ' Error: ' + err_msg,
diff --git a/pywb/static/wb.js b/pywb/static/wb.js
index 4a23b03c..fb2c3ac3 100644
--- a/pywb/static/wb.js
+++ b/pywb/static/wb.js
@@ -70,8 +70,9 @@ function init_banner() {
 
     text += "<b id='_wb_capture_info'>" + capture_str + "</b>";
 
-    if (wbinfo.is_proxy_mode && wbinfo.url) {
-        text += '<br/><a href="//select.pywb-proxy.com/' + wbinfo.url + '">Switch Collection</a>';
+    if (wbinfo.proxy_select && wbinfo.url) {
+        full_url = wbinfo.proxy_select + "/" + wbinfo.url;
+        text += '<br/><a href="//' + full_url + '">Switch Collection</a>';
     }
     
     banner.innerHTML = text;
diff --git a/pywb/ui/error.html b/pywb/ui/error.html
index d7231893..6453e987 100644
--- a/pywb/ui/error.html
+++ b/pywb/ui/error.html
@@ -10,9 +10,9 @@
 </p>
 {% endif %}
 
-{% if is_proxy_mode and err_url and status == '404 Not Found' %}
+{% if env.pywb_proxy_select and err_url and status == '404 Not Found' %}
 <p>
-<a href="//select.pywb-proxy.com/{{ err_url }}">Try Different Collections</a>
+<a href="//{{ env.pywb_proxy_select }}/{{ err_url }}">Try Different Collections</a>
 </p>
 {% endif %}
 
diff --git a/pywb/ui/head_insert.html b/pywb/ui/head_insert.html
index d9e1207b..98330da9 100644
--- a/pywb/ui/head_insert.html
+++ b/pywb/ui/head_insert.html
@@ -20,7 +20,7 @@
   wbinfo.is_frame_mp = {{"true" if wbrequest.wb_url.mod == 'mp_' else "false"}};
   wbinfo.canon_url = "{{ canon_url }}";
   wbinfo.is_live = {{ "true" if cdx.is_live else "false" }};
-  wbinfo.is_proxy_mode = {{ "true" if wbrequest.options.is_proxy else "false" }};
+  wbinfo.proxy_select = "{{ wbrequest.env.pywb_proxy_select }}";
 </script>
 <script src='{{ wbrequest.host_prefix }}/{{ static_path }}/wb.js'> </script>
 <link rel='stylesheet' href='{{ wbrequest.host_prefix }}/{{ static_path }}/wb.css'/>