diff --git a/all/ipv6.txt b/all/ipv6.txt
index 782a43e4..1b85a8f4 100644
--- a/all/ipv6.txt
+++ b/all/ipv6.txt
@@ -12773,6 +12773,5 @@
 2800:3f0::/32
 2803:6080::/29
 2803:6083:179b:400::/54
-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 31a279a9..491a9267 100644
--- a/facebook/ipv6.txt
+++ b/facebook/ipv6.txt
@@ -543,4 +543,3 @@
 2620:10d:c099::/48
 2803:6080::/29
 2803:6083:179b:400::/54
-2803:6083:1644:400::/54