diff --git a/all/ipv6.txt b/all/ipv6.txt
index a3efaad6..d3e084cf 100644
--- a/all/ipv6.txt
+++ b/all/ipv6.txt
@@ -251258,6 +251258,7 @@
 2606:7b40:1b0f:200::/56
 2606:7b40:1b0f:300::/56
 2606:7b40:1b0f:400::/56
+2606:7b40:1b0f:500::/56
 2606:7b40:1b0f:4000::/56
 2606:7b40:1b0f:4100::/56
 2606:7b40:1b0f:4200::/56
diff --git a/all/ipv6_merged.txt b/all/ipv6_merged.txt
index 5bd72b0d..1fa20a3b 100644
--- a/all/ipv6_merged.txt
+++ b/all/ipv6_merged.txt
@@ -11745,7 +11745,7 @@
 2606:7b40:1b0e:200::/56
 2606:7b40:1b0e:4000::/56
 2606:7b40:1b0e::/55
-2606:7b40:1b0f:400::/56
+2606:7b40:1b0f:400::/55
 2606:7b40:1b0f:4000::/54
 2606:7b40:1b0f:8000::/55
 2606:7b40:1b0f:c000::/54
diff --git a/amazon/ipv6.txt b/amazon/ipv6.txt
index fafd57d6..713e78de 100644
--- a/amazon/ipv6.txt
+++ b/amazon/ipv6.txt
@@ -2226,6 +2226,7 @@
 2606:7b40:1b0f:200::/56
 2606:7b40:1b0f:300::/56
 2606:7b40:1b0f:400::/56
+2606:7b40:1b0f:500::/56
 2606:7b40:1b0f:4000::/56
 2606:7b40:1b0f:4100::/56
 2606:7b40:1b0f:4200::/56
diff --git a/amazon/ipv6_merged.txt b/amazon/ipv6_merged.txt
index 7d21f4aa..71cea887 100644
--- a/amazon/ipv6_merged.txt
+++ b/amazon/ipv6_merged.txt
@@ -1555,7 +1555,7 @@
 2606:7b40:1b0e:200::/56
 2606:7b40:1b0e:4000::/56
 2606:7b40:1b0e::/55
-2606:7b40:1b0f:400::/56
+2606:7b40:1b0f:400::/55
 2606:7b40:1b0f:4000::/54
 2606:7b40:1b0f:8000::/55
 2606:7b40:1b0f:c000::/54