diff --git a/respodns/dns.py b/respodns/dns.py
index b7e15cc..9f6b39b 100644
--- a/respodns/dns.py
+++ b/respodns/dns.py
@@ -1,4 +1,5 @@
 from .structs import Options
+from .ips import gfw_ips
 
 
 def detect_gfw(r, ip, check):
@@ -14,26 +15,15 @@ def detect_gfw(r, ip, check):
 
     if (
         (rs("31.13.") and not hosted) or
-        (rs("66.220.")) or
-        (rs("69.63.")) or
+        rs("66.220.") or
+        rs("69.63.") or
         (rs("69.171.") and not rs("69.171.250.")) or
-        (rs("74.86.")) or
-        (rs("75.126.")) or
-        (r == "64.13.192.74")
+        rs("74.86.") or
+        rs("75.126.") or
+        r in gfw_ips
     ):
         return True
 
-    # more non-facebook GFW stuff:
-    # 31.13.64.33
-    # 31.13.70.1
-    # 31.13.70.20
-    # 31.13.76.16
-    # 31.13.86.1
-    # 173.252.110.21
-    # 192.99.140.48
-    # 199.16.156.40
-    # 199.16.158.190
-
     return False
 
 
diff --git a/respodns/ips.py b/respodns/ips.py
index 2c0e197..5ff85c8 100644
--- a/respodns/ips.py
+++ b/respodns/ips.py
@@ -5,8 +5,15 @@ china = {
     "1.2.4.8",
     "1.8.1.8",
     "1.8.8.8",
+    "58.213.28.126",
+    "58.221.250.86",
+    "58.222.226.146",
     "114.254.201.131",
+#   "204.13.152.3",  # not china but seems to be poisoned
+    "218.94.128.126",
+    "218.94.193.170",
     "218.107.55.108",
+    "221.231.0.210",
     "222.216.2.236",
 }
 
@@ -80,6 +87,59 @@ for i in range(1, 255):
     blocks.add(f"156.154.175.{i}")
     blocks.add(f"156.154.176.{i}")
 
+gfw_ips = {
+    "4.36.66.178",
+    "8.7.198.45",
+    "8.7.198.46",
+    "46.82.174.68",
+    "46.82.174.69",
+    "49.2.123.56",
+    "54.76.135.1",
+    "59.24.3.173",
+    "59.24.3.174",
+    "64.13.192.74",
+    "67.15.100.252",
+    "67.15.129.210",
+    "67.228.102.32",
+    "67.228.235.91",
+    "67.228.235.93",
+    "77.4.7.92",
+    "78.16.49.15",
+    "88.191.249.182",
+    "88.191.249.183",
+    "88.191.253.157",
+    "93.46.8.89",
+    "93.46.8.90",
+    "173.252.73.48",
+    "173.252.100.21",
+    "173.252.100.32",
+    "173.252.102.16",
+    "173.252.102.241",
+    "173.252.103.64",
+    "173.252.110.21",
+    "174.36.196.242",
+    "174.36.228.136",
+    "174.37.54.20",
+    "174.37.154.236",
+    "174.37.175.229",
+    "199.16.158.190"
+    "199.59.148.97",
+    "199.59.148.209",
+    "199.59.149.136",
+    "199.59.149.244",
+    "199.59.150.49",
+    "203.98.7.65",
+    "203.161.230.171",
+    "205.186.152.122",
+    "208.43.170.231",
+    "208.43.237.140",
+    "208.101.21.43",
+    "208.101.60.87",
+    "243.185.187.39",
+    "249.129.46.48",
+    "253.157.14.165",
+}
+
 bogon_checks = [
     "0.",
     "10.",