diff --git a/all/ipv4.txt b/all/ipv4.txt
index 3b165a42..f57e5195 100644
--- a/all/ipv4.txt
+++ b/all/ipv4.txt
@@ -101613,7 +101613,6 @@
 172.253.0.0/16
 172.253.56.0/21
 172.253.112.0/20
-172.253.112.0/21
 173.83.192.0/22
 173.83.196.0/23
 173.83.198.0/24
diff --git a/google/ipv4.txt b/google/ipv4.txt
index 23dccbdb..90e8c4e0 100644
--- a/google/ipv4.txt
+++ b/google/ipv4.txt
@@ -1056,7 +1056,6 @@
 172.253.0.0/16
 172.253.56.0/21
 172.253.112.0/20
-172.253.112.0/21
 173.194.0.0/16
 173.255.112.0/20
 173.255.112.0/21