diff --git a/all/ipv6.txt b/all/ipv6.txt
index 4f1470fa..bc5b0652 100644
--- a/all/ipv6.txt
+++ b/all/ipv6.txt
@@ -265228,6 +265228,7 @@
 2631:0:2::/48
 2631:0:3::/48
 2631:0:4::/48
+2631:0:1800::/39
 2631:1:4c00::/48
 2631:1:4c40::/48
 2631:1:4cc0::/48
diff --git a/all/ipv6_merged.txt b/all/ipv6_merged.txt
index 4e84082c..c4345ebb 100644
--- a/all/ipv6_merged.txt
+++ b/all/ipv6_merged.txt
@@ -12012,6 +12012,7 @@
 2620:108:d000::/44
 2620:120:e000::/40
 2631:0:4::/48
+2631:0:1800::/39
 2631:1:4c00::/48
 2631:1:4c40::/48
 2631:1:4cc0::/48
diff --git a/amazon/ipv6.txt b/amazon/ipv6.txt
index 0d62ee3b..aed470d1 100644
--- a/amazon/ipv6.txt
+++ b/amazon/ipv6.txt
@@ -2318,6 +2318,7 @@
 2631:0:2::/48
 2631:0:3::/48
 2631:0:4::/48
+2631:0:1800::/39
 2631:1:4c00::/48
 2631:1:4c40::/48
 2631:1:4cc0::/48
diff --git a/amazon/ipv6_merged.txt b/amazon/ipv6_merged.txt
index 2e1677fb..e953f1f3 100644
--- a/amazon/ipv6_merged.txt
+++ b/amazon/ipv6_merged.txt
@@ -1648,6 +1648,7 @@
 2620:108:7000::/44
 2620:108:d000::/44
 2631:0:4::/48
+2631:0:1800::/39
 2631:1:4c00::/48
 2631:1:4c40::/48
 2631:1:4cc0::/48