diff --git a/main.py b/main.py
index 9dc664c..2ba7a98 100755
--- a/main.py
+++ b/main.py
@@ -23,6 +23,7 @@ app.secret_key = "6ab77f3c45447429c2ae163c260a626029519a66450e474c"
 users_file = "/etc/freeradius/dpto2/users"
 dhcp_hosts_file = "/etc/dnsmasq.d/dpto2/dhcp-hosts"
 dhcp_opts_file = "/etc/dnsmasq.d/dpto2/dhcp-opts"
+dnsmasq_leases = "/var/lib/misc/dnsmasq.leases"
 impossible_mac = "ff:ff:ff:ff:ff:fe"
 
 class Lock:
@@ -219,7 +220,7 @@ def list_users():
     lines = render_users_tree(tree)
     return render_template("users.html", users=lines)
 
-mac_re = re.compile("(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}")
+mac_re = re.compile("(?:[0-9a-fA-F]{2}[:-]){5}[0-9a-fA-F]{2}")
 ip_re_str = "\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}"
 ip_re = re.compile(ip_re_str)
 DhcpHostLine = namedtuple("DhcpHostLine","macs ip tag")
@@ -310,11 +311,37 @@ def load_ips():
     ipmap["prefix"] = prefix
     return ipmap
 
+def load_leases():
+    leases = {}
+    with open(dnsmasq_leases) as f:
+        for line in f:
+            parts = line.strip().split()
+            try:
+                ip = int(parts[2].split(".")[-1])
+            except IndexError:
+                continue
+            except ValueError:
+                continue
+            try:
+                lease = [
+                    int(parts[0]),  # expiration timestamp
+                    parts[1],       # client mac address
+                    parts[2],       # leased ip
+                    parts[3],       # host name or * if no name sent
+                    parts[4],       # client id or * if no id sent
+                ]
+            except IndexError:
+                # line is shorter than I thought, skippping
+                continue
+            leases[ip] = lease
+    return leases
+
 @app.route("/ips")
 @login_required
 def ips():
     ipmap = load_ips()
-    return render_template("ips.html", ipmap=ipmap)
+    leases = load_leases()
+    return render_template("ips.html", ipmap=ipmap, leases=leases)
 
 def parse_macs(macs):
     r = []
@@ -324,7 +351,7 @@ def parse_macs(macs):
         p = p.strip()
         m = mac_re.match(p)
         if m:
-            r.append(m.group(0))
+            r.append(m.group(0).replace("-",":"))
     return r
 
 def rename(src, dst):
@@ -411,12 +438,33 @@ def ip(last_byte):
         return redirect(url_for('ips'))
     else:
         ipmap = load_ips()
+        leases = load_leases()
+        lease = None
+        try:
+            if last_byte in leases:
+                lease = leases[last_byte]
+                today = time.localtime().tm_wday
+                expiry_t = time.localtime(int(lease[0]))
+                expiry_day = expiry_t.tm_wday
+                expiry_hour = time.strftime("%I:%M %p", expiry_t)
+                if today == expiry_day:
+                    lease[0] = "las " + expiry_hour
+                elif (today + 1) % 7 == expiry_day:
+                    lease[0] = "ma\N{LATIN SMALL LETTER N WITH TILDE}ana a las " + expiry_hour
+                else:
+                    lease[0] = time.strftime("%B %d, ", expiry_t) + expiry_hour
+        except ValueError:
+            pass
+        except IndexError:
+            pass
+
         addr = "{}.{}".format(ipmap["prefix"], last_byte)
         return render_template(
                 "ip.html",
                 addr=addr,
                 valid_colors=valid_colors,
                 meta=ipmap[last_byte],
+                lease=lease,
         )
 
 @app.route("/logout")
diff --git a/static/css/dpto2.css b/static/css/dpto2.css
index 464a308..b732f2c 100644
--- a/static/css/dpto2.css
+++ b/static/css/dpto2.css
@@ -103,6 +103,18 @@ span.lock {
     color: #aaa;
     font-size: small;
 }
+span.leased {
+    position: absolute;
+    bottom: 2px;
+    left: 0.6em;
+    color: #66BB6A;
+    font-size: x-small;
+}
+
+div.lease {
+    color: #66bb6a;
+    margin-bottom: 5px;
+}
 
 div.ips-cell.dhcp-pool {
     background-color: #bed;
diff --git a/templates/ip.html b/templates/ip.html
index 64c2555..44618d2 100644
--- a/templates/ip.html
+++ b/templates/ip.html
@@ -99,10 +99,25 @@
        </div>
      </div>
    </div>
+
    </fieldset>
   </div>
   </div>
 
+  {% if lease %}
+  <div class="form-group">
+    <div class="col-xs-12">
+     <div class="lease">
+      <i class="fa fa-circle"></i>
+      Otorgado a {{ lease[1] }}
+      {% if lease[3] != "*" %} ({{ lease[3] }}) {% endif %}<br>
+      <i class="fa fa-circle" style="visibility: hidden;"></i>
+      hasta {{ lease[0] }}
+     </div>
+   </div>
+  </div>
+  {% endif %}
+
   {% if create_error %}
   <center>
   <p>Error: {{ errormsg }}</p>
diff --git a/templates/ips.html b/templates/ips.html
index e7836aa..57da517 100644
--- a/templates/ips.html
+++ b/templates/ips.html
@@ -51,6 +51,9 @@
           {% if ipmap[ip].locked %}
               <span class="lock"><i class="fa fa-lock"></i></span>
           {% endif %}
+          {% if not ipmap[ip].locked and ip in leases %}
+              <span class="leased"><i class="fa fa-circle"></i></span>
+          {% endif %}
           <span class="ip">.{{ row*16 + col }}</span>
           {% endif %}
         </div>