diff --git a/plstackapi/core/api/subnets.py b/plstackapi/core/api/subnets.py
new file mode 100644
index 0000000..ad53da0
--- /dev/null
+++ b/plstackapi/core/api/subnets.py
@@ -0,0 +1,61 @@
+import re
+from plstackapi.openstack.client import OpenStackClient
+from plstackapi.openstack.driver import OpenStackDriver
+from plstackapi.core.api.auth import auth_check
+from plstackapi.core.models import Subnet
+from plstackapi.core.api.slices import _get_slices
+
+def _get_subnets(filter):
+    if isinstance(filter, int):
+        subnets = Subnet.objects.filter(id=filter)
+    elif isinstance(filter, StringTypes):
+        subnets = Subnet.objects.filter(name=filter)
+    elif isinstance(filer, dict):
+        subnets = Subnet.objects.filter(**filter)
+    else:
+        subnets = []
+    return subnets
+
+def add_subnet(auth, fields):
+    driver = OpenStackDriver(client = auth_check(auth))
+    slices = _get_slice(fields.get('slice')) 
+    if slices: fields['slice'] = slices[0]     
+    subnet = Subnet(**fields)
+    # create quantum subnet
+    subnet = driver.create_subnet(network_name=subnet.name,
+                                  cidr_ip = subnet.cidr,
+                                  ip_version=subnet.ip_version,
+                                  start = subnet.start,
+                                  end = subnet.end,
+                                  dns_nameservers = ['8.8.8.8', '8.8.4.4'])
+
+    subnet.subnet_id=subnet.id
+
+    # add subnet as interface to slice's router
+    driver.add_router_interface(subnet.slice.router_id, subnet.subnet_id)     
+    
+    subnet.save()
+    return subnet
+
+def update_subnet(auth, subnet, **fields):
+    return  
+
+def delete_subnet(auth, filter={}):
+    driver = OpenStackDriver(client = auth_check(auth))   
+    subnets = Subnet.objects.filter(**filter)
+    for subnet in subnets:
+        driver.delete_router_interface(subnet.slice.router_id, subnet.subnet_id)
+        driver.delete_subnet(subnet.subnet_id) 
+        subnet.delete()
+    return 1
+
+def get_subnets(auth, filter={}):
+    client = auth_check(auth)
+    if 'slice' in filter:
+        slice = _get_slice(filter.get('slice'))
+        if slice: filter['slice'] = slice
+    subnets = Subnet.objects.filter(**filter)
+    return subnets             
+        
+
+