diff --git a/xos/hpc_observer/steps/sync_sitemap.py b/xos/hpc_observer/steps/sync_sitemap.py
new file mode 100644
index 0000000..f62f63a
--- /dev/null
+++ b/xos/hpc_observer/steps/sync_sitemap.py
@@ -0,0 +1,96 @@
+import os
+import sys
+import base64
+from django.db.models import F, Q
+from xos.config import Config
+from observer.syncstep import SyncStep
+from core.models import Service
+from hpc.models import ServiceProvider, ContentProvider, CDNPrefix
+from util.logger import Logger, logging
+
+# hpclibrary will be in steps/..
+parentdir = os.path.join(os.path.dirname(__file__),"..")
+sys.path.insert(0,parentdir)
+
+from hpclib import HpcLibrary
+
+logger = Logger(level=logging.INFO)
+
+class SyncCDNPrefix(SyncStep, HpcLibrary):
+    provides=[CDNPrefix]
+    requested_interval=0
+
+    def __init__(self, **args):
+        SyncStep.__init__(self, **args)
+        HpcLibrary.__init__(self)
+
+    def fetch_pending(self, deleted):
+        #self.consistency_check()
+
+        return SyncStep.fetch_pending(self, deleted)
+
+    def consistency_check(self):
+        # set to true if something changed
+        result=False
+
+        # sanity check to make sure our PS objects have CMI objects behind them
+        all_p_ids = [x["cdn_prefix_id"] for x in self.client.onev.ListAll("CDNPrefix")]
+
+        all_p_ids = []
+        all_origins = {}
+        for x in self.client.onev.ListAll("CDNPrefix"):
+            id = x["cdn_prefix_id"]
+            all_p_ids.append(id)
+            all_origins[id] = x.get("default_origin_server", None)
+
+        for p in CDNPrefix.objects.all():
+            if (p.cdn_prefix_id is None):
+                continue
+
+            if (p.cdn_prefix_id not in all_p_ids):
+                logger.info("CDN Prefix %s was not found on CMI" % p.cdn_prefix_id)
+                p.cdn_prefix_id=None
+                p.save()
+                result = True
+
+            if (p.defaultOriginServer!=None) and (all_origins.get(p.cdn_prefix_id,None) != p.defaultOriginServer.url):
+                logger.info("CDN Prefix %s does not have default origin server on CMI" % str(p))
+                p.save() # this will set updated>enacted and force observer to re-sync
+                result = True
+
+        return result
+
+    def sync_record(self, cp):
+        logger.info("sync'ing cdn prefix %s" % str(cp))
+
+        if (not cp.contentProvider) or (not cp.contentProvider.content_provider_id):
+            return
+
+        cpid = cp.contentProvider.content_provider_id
+
+        cp_dict = {"service": "HyperCache", "enabled": cp.enabled, "content_provider_id": cpid, "cdn_prefix": cp.prefix}
+
+        if cp.defaultOriginServer and cp.defaultOriginServer.url:
+            if (not cp.defaultOriginServer.origin_server_id):
+                # It's probably a bad idea to try to set defaultOriginServer before
+                # we've crated defaultOriginServer.
+                logger.info("   cdn prefix %s is waiting for it's default origin server to get an id" % str(cp))
+                return
+
+            cp_dict["default_origin_server"] = cp.defaultOriginServer.url
+
+        #print cp_dict
+
+        if not cp.cdn_prefix_id:
+            id = self.client.onev.Create("CDNPrefix", cp_dict)
+            cp.cdn_prefix_id = id
+        else:
+            del cp_dict["content_provider_id"]  # this can't be updated
+            del cp_dict["cdn_prefix"] # this can't be updated either
+            self.client.onev.Update("CDNPrefix", cp.cdn_prefix_id, cp_dict)
+
+        cp.save()
+
+    def delete_record(self, m):
+        if m.cdn_prefix_id is not None:
+            self.client.onev.Delete("CDNPrefix", m.cdn_prefix_id)