diff --git a/all/ipv6.txt b/all/ipv6.txt
index 6b12a131..5347d2de 100644
--- a/all/ipv6.txt
+++ b/all/ipv6.txt
@@ -3932,7 +3932,6 @@
 2600:9000:4000::/36
 2600:9000:5200::/40
 2600:9000:5200::/48
-2600:9000:5201::/48
 2600:9000:5202::/48
 2600:9000:5203::/48
 2600:9000:5204::/48
diff --git a/amazon/ipv6.txt b/amazon/ipv6.txt
index ae1f3f8a..cb79d59c 100644
--- a/amazon/ipv6.txt
+++ b/amazon/ipv6.txt
@@ -1010,7 +1010,6 @@
 2600:9000:4000::/36
 2600:9000:5200::/40
 2600:9000:5200::/48
-2600:9000:5201::/48
 2600:9000:5202::/48
 2600:9000:5203::/48
 2600:9000:5204::/48