diff --git a/data/cncity/310000.txt b/data/cncity/310000.txt
index abaa9c74..313ac0a4 100644
--- a/data/cncity/310000.txt
+++ b/data/cncity/310000.txt
@@ -679,7 +679,7 @@
 115.120.144.0/23
 115.120.148.0/22
 115.120.152.0/21
-115.120.184.0/21
+115.120.176.0/20
 115.120.192.0/18
 115.159.0.0/17
 115.159.128.0/18
diff --git a/data/cncity/500000.txt b/data/cncity/500000.txt
index d7fdb2a7..8da1034b 100644
--- a/data/cncity/500000.txt
+++ b/data/cncity/500000.txt
@@ -123,7 +123,6 @@
 114.117.192.0/18
 115.120.146.0/23
 115.120.160.0/20
-115.120.176.0/21
 115.168.52.0/24
 115.168.84.0/24
 115.169.18.0/24
diff --git a/data/country/CN/CN-CQ.txt b/data/country/CN/CN-CQ.txt
index d7fdb2a7..8da1034b 100644
--- a/data/country/CN/CN-CQ.txt
+++ b/data/country/CN/CN-CQ.txt
@@ -123,7 +123,6 @@
 114.117.192.0/18
 115.120.146.0/23
 115.120.160.0/20
-115.120.176.0/21
 115.168.52.0/24
 115.168.84.0/24
 115.169.18.0/24
diff --git a/data/country/CN/CN-SH.txt b/data/country/CN/CN-SH.txt
index abaa9c74..313ac0a4 100644
--- a/data/country/CN/CN-SH.txt
+++ b/data/country/CN/CN-SH.txt
@@ -679,7 +679,7 @@
 115.120.144.0/23
 115.120.148.0/22
 115.120.152.0/21
-115.120.184.0/21
+115.120.176.0/20
 115.120.192.0/18
 115.159.0.0/17
 115.159.128.0/18
diff --git a/data/isp/drpeng.txt b/data/isp/drpeng.txt
index d9eb6c61..c8a881b0 100644
--- a/data/isp/drpeng.txt
+++ b/data/isp/drpeng.txt
@@ -197,7 +197,6 @@
 115.47.0.0/16
 115.120.146.0/23
 115.120.160.0/20
-115.120.176.0/21
 115.172.0.0/19
 115.172.40.0/22
 115.172.44.0/23
diff --git a/data/isp/huawei.txt b/data/isp/huawei.txt
index c593de80..b06cafdc 100644
--- a/data/isp/huawei.txt
+++ b/data/isp/huawei.txt
@@ -50,7 +50,7 @@
 115.120.144.0/23
 115.120.148.0/22
 115.120.152.0/21
-115.120.184.0/21
+115.120.176.0/20
 115.120.192.0/18
 115.173.0.0/19
 115.175.0.0/16