diff --git a/apps/tgbot/tgbot/handlers/base.py b/apps/tgbot/tgbot/handlers/base.py
index 551b26b..d62037d 100644
--- a/apps/tgbot/tgbot/handlers/base.py
+++ b/apps/tgbot/tgbot/handlers/base.py
@@ -96,6 +96,7 @@ class CheckerBaseHandler(SimpleCommandHandler):
         te = time()
         logger.info(f"func {__name__} took {te - ts} sec")
 
+    # TODO: Validation classes
     async def validate_target(self, target: str):
         if validate_local(target):
             raise LocalhostForbidden()
diff --git a/apps/tgbot/tgbot/handlers/default/ipcalc.py b/apps/tgbot/tgbot/handlers/default/ipcalc.py
index e6cee69..8b02503 100644
--- a/apps/tgbot/tgbot/handlers/default/ipcalc.py
+++ b/apps/tgbot/tgbot/handlers/default/ipcalc.py
@@ -3,6 +3,7 @@ from typing import Union
 import ipaddress
 
 from tgbot.handlers.base import SimpleCommandHandler, NotEnoughArgs
+from tgbot.middlewares.throttling import rate_limit
 
 ipcalc_help_message = """
 ❓ Калькулятор IP подсетей.
@@ -20,6 +21,7 @@ class IPCalcCommandHandler(SimpleCommandHandler):
     def __init__(self):
         super().__init__()
 
+    @rate_limit
     async def handler(self, message: Message):
         try:
             args = await self.process_args(message.text)