diff --git a/all/ipv6.txt b/all/ipv6.txt
index 872db5f2..fce73959 100644
--- a/all/ipv6.txt
+++ b/all/ipv6.txt
@@ -238183,7 +238183,6 @@
 2600:f0f0:4::/48
 2600:f0f0:8::/48
 2600:f0f0:10::/48
-2600:f0f0:11ff::/48
 2600:f0f0:11::/48
 2600:f0f0:20::/48
 2600:f0f0:30e::/48
diff --git a/all/ipv6_merged.txt b/all/ipv6_merged.txt
index ecec579f..0cc526f4 100644
--- a/all/ipv6_merged.txt
+++ b/all/ipv6_merged.txt
@@ -11490,7 +11490,6 @@
 2600:f0f0:4::/48
 2600:f0f0:8::/48
 2600:f0f0:10::/47
-2600:f0f0:11ff::/48
 2600:f0f0:20::/48
 2600:f0f0:30e::/47
 2600:f0f0:30::/44
diff --git a/amazon/ipv6.txt b/amazon/ipv6.txt
index 9d17081d..0bc527b2 100644
--- a/amazon/ipv6.txt
+++ b/amazon/ipv6.txt
@@ -1563,7 +1563,6 @@
 2600:f0f0:4::/48
 2600:f0f0:8::/48
 2600:f0f0:10::/48
-2600:f0f0:11ff::/48
 2600:f0f0:11::/48
 2600:f0f0:20::/48
 2600:f0f0:30e::/48
diff --git a/amazon/ipv6_merged.txt b/amazon/ipv6_merged.txt
index 6f0dcdd8..4534503a 100644
--- a/amazon/ipv6_merged.txt
+++ b/amazon/ipv6_merged.txt
@@ -1283,7 +1283,6 @@
 2600:f0f0:4::/48
 2600:f0f0:8::/48
 2600:f0f0:10::/47
-2600:f0f0:11ff::/48
 2600:f0f0:20::/48
 2600:f0f0:30e::/47
 2600:f0f0:30::/44