diff --git a/all/ipv6.txt b/all/ipv6.txt
index d27703e7..43bad4f7 100644
--- a/all/ipv6.txt
+++ b/all/ipv6.txt
@@ -12288,5 +12288,6 @@
 2800:3f0:4000::/36
 2800:3f0::/32
 2803:6080::/29
+2803:6083:1644:400::/54
 2804:800:0:7000::/56
 2804:800:ff00::/48
diff --git a/facebook/ipv6.txt b/facebook/ipv6.txt
index 783c918e..17d7d59d 100644
--- a/facebook/ipv6.txt
+++ b/facebook/ipv6.txt
@@ -529,3 +529,4 @@
 2620:10d:c098::/48
 2620:10d:c099::/48
 2803:6080::/29
+2803:6083:1644:400::/54