diff --git a/data/cncity/100000.txt b/data/cncity/100000.txt
index d77bd760..b4764389 100644
--- a/data/cncity/100000.txt
+++ b/data/cncity/100000.txt
@@ -1484,7 +1484,6 @@
 139.197.0.0/16
 144.48.90.0/23
 144.48.156.0/22
-144.48.185.0/24
 144.48.186.0/23
 144.48.204.0/22
 150.242.92.0/22
diff --git a/data/cncity/510000.txt b/data/cncity/510000.txt
index bb70c536..00e11814 100644
--- a/data/cncity/510000.txt
+++ b/data/cncity/510000.txt
@@ -419,7 +419,7 @@
 140.143.96.0/22
 140.143.100.0/23
 144.48.180.0/22
-144.48.184.0/24
+144.48.184.0/23
 148.70.0.0/16
 157.15.104.0/23
 157.20.246.0/23
diff --git a/data/cncity/510100.txt b/data/cncity/510100.txt
index 2f82fee6..6085c2a3 100644
--- a/data/cncity/510100.txt
+++ b/data/cncity/510100.txt
@@ -688,7 +688,7 @@
 140.143.96.0/22
 140.143.100.0/23
 144.48.180.0/22
-144.48.184.0/24
+144.48.184.0/23
 148.70.0.0/16
 159.226.140.0/22
 159.226.167.0/24
diff --git a/data/country/CN/CN-SC.txt b/data/country/CN/CN-SC.txt
index bb70c536..00e11814 100644
--- a/data/country/CN/CN-SC.txt
+++ b/data/country/CN/CN-SC.txt
@@ -419,7 +419,7 @@
 140.143.96.0/22
 140.143.100.0/23
 144.48.180.0/22
-144.48.184.0/24
+144.48.184.0/23
 148.70.0.0/16
 157.15.104.0/23
 157.20.246.0/23