diff --git a/all/ipv6.txt b/all/ipv6.txt
index 041898c0..30b7ec1d 100644
--- a/all/ipv6.txt
+++ b/all/ipv6.txt
@@ -237391,6 +237391,7 @@
 2406:e500:2602:3::288/125
 2406:e500:2602:3::b0/125
 2406:e500:2602:3::b8/125
+2406:e500:2602:4::/122
 2406:e500:2602:400::2c0/124
 2406:e500:2602:400::2d8/125
 2406:e500:2602:400::2e0/123
diff --git a/microsoft/ipv6.txt b/microsoft/ipv6.txt
index f4e7bbb0..feee0e88 100644
--- a/microsoft/ipv6.txt
+++ b/microsoft/ipv6.txt
@@ -2076,6 +2076,7 @@
 2406:e500:2602:3::288/125
 2406:e500:2602:3::b0/125
 2406:e500:2602:3::b8/125
+2406:e500:2602:4::/122
 2406:e500:2602:400::2c0/124
 2406:e500:2602:400::2d8/125
 2406:e500:2602:400::2e0/123