diff --git a/lib/srv.py b/lib/srv.py
index 9ec98d5..1d05b4b 100644
--- a/lib/srv.py
+++ b/lib/srv.py
@@ -12,7 +12,6 @@ import os
 import re
 import requests
 import socket
-import time
 import json
 
 import geoip2.database
@@ -41,8 +40,9 @@ from globals import GEOLITE, \
                     IATA_CODES_FILE, \
                     log, \
                     LISTEN_PORT, LISTEN_HOST, PLAIN_TEXT_AGENTS, PLAIN_TEXT_PAGES, \
-                    IP2LOCATION_KEY
+                    IP2LOCATION_KEY, MY_EXTERNAL_IP
 
+from limits import Limits
 from wttr import get_wetter, get_moon
 
 # pylint: enable=wrong-import-position,wrong-import-order
@@ -57,61 +57,7 @@ MY_LOADER = jinja2.ChoiceLoader([
 ])
 APP.jinja_loader = MY_LOADER
 
-class Limits:
-    def __init__(self):
-        self.intervals = ['min', 'hour', 'day']
-        self.divisor = {
-            'min':      60,
-            'hour':     3600,
-            'day':      86400,
-            }
-        self.counter = {
-            'min':      {},
-            'hour':     {},
-            'day':      {},
-            }
-        self.limit = {
-            'min':      30,
-            'hour':     600,
-            'day':      1000,
-            }
-        self.last_update = {
-            'min':      0,
-            'hour':     0,
-            'day':      0,
-            }
-        self.clear_counters()
-
-    def check_ip(self, ip_address):
-        """
-        check if connections from `ip_address` are allowed
-        and raise a RuntimeError exception if they are not
-        """
-        if ip_address == '5.9.243.177':
-            return
-        self.clear_counters()
-        for interval in self.intervals:
-            if ip_address not in self.counter[interval]:
-                self.counter[interval][ip_address] = 0
-            self.counter[interval][ip_address] += 1
-            if self.limit[interval] <= self.counter[interval][ip_address]:
-                log("Too many queries: %s in %s for %s"
-                    % (self.limit[interval], interval, ip_address))
-                raise RuntimeError(
-                    "Not so fast! Number of queries per %s is limited to %s"
-                    % (interval, self.limit[interval]))
-
-    def clear_counters(self):
-        """
-        Initialize counters for new interval
-        """
-        t_int = int(time.time())
-        for interval in self.intervals:
-            if t_int / self.divisor[interval] != self.last_update[interval]:
-                self.counter[interval] = {}
-                self.last_update[interval] = t_int / self.divisor[interval]
-
-LIMITS = Limits()
+LIMITS = Limits(whitelist=[MY_EXTERNAL_IP], limits=(30, 60, 100))
 
 def is_ip(ip_addr):
     """