diff --git a/proxy_scraper_checker/output.py b/proxy_scraper_checker/output.py
index d0001a0..ff731b5 100644
--- a/proxy_scraper_checker/output.py
+++ b/proxy_scraper_checker/output.py
@@ -27,7 +27,8 @@ def _create_proxy_list_str(
     return "\n".join(
         proxy.as_str(include_protocol=include_protocol)
         for proxy in proxies
-        if not anonymous_only or proxy.host != proxy.exit_ip
+        if not anonymous_only
+        or (proxy.exit_ip is not None and proxy.host != proxy.exit_ip)
     )
 
 
@@ -51,7 +52,7 @@ def save_proxies(*, settings: Settings, storage: ProxyStorage) -> None:
                     "exit_ip": proxy.exit_ip,
                     "timeout": round(proxy.timeout, 2),
                     "geolocation": mmdb_reader.get(proxy.exit_ip)
-                    if mmdb_reader is not None
+                    if mmdb_reader is not None and proxy.exit_ip is not None
                     else None,
                 }
                 for proxy in sorted(storage, key=sort.timeout_sort_key)
diff --git a/proxy_scraper_checker/proxy.py b/proxy_scraper_checker/proxy.py
index 6da2f36..8c5a18e 100644
--- a/proxy_scraper_checker/proxy.py
+++ b/proxy_scraper_checker/proxy.py
@@ -35,7 +35,7 @@ class Proxy:
     username: Optional[str]
     password: Optional[str]
     timeout: float = attrs.field(init=False, eq=False)
-    exit_ip: str = attrs.field(init=False, eq=False)
+    exit_ip: Optional[str] = attrs.field(init=False, eq=False)
 
     async def check(self, *, settings: Settings) -> None:
         async with settings.semaphore:
@@ -67,6 +67,8 @@ class Proxy:
             self.exit_ip = parse_ipv4(
                 get_response_text(response=response, content=content)
             )
+        else:
+            self.exit_ip = None
 
     def as_str(self, *, include_protocol: bool) -> str:
         with StringIO() as buf: