DNS缓存病毒又称DNS欺骗，是一种通过查找并利用DNS系统中存在的漏洞，将流量从合法服务器引导至虚假服务器上的攻击方式。
在实际的DNS解析过程中，用户请求某个网站，浏览器首先会查找本机中的DNS缓存，如果DNS缓存中记录了该网站和IP的映射关系，就会直接将结果返回给用户，用户对所得的IP地址发起访问。如果缓存中没有相关记录，才会委托递归服务器发起递归查询。
这种查询机制，缩短了全球查询的时间，可以让用户获得更快的访问体验，但也存在一定的安全风险。如果攻击者通过控制用户的主机或者使用恶意软件攻击用户的DNS缓存，就可以对DNS缓存中的域名映射关系进行篡改，将域名解析结果指向一个虚假IP。
最强防护段
43.227.220.1
43.227.220.2
43.227.220.3
43.227.220.4
43.227.220.5
43.227.220.6
43.227.220.7
43.227.220.8
43.227.220.9
43.227.220.10
43.227.220.11
43.227.220.12
43.227.220.13
43.227.220.14
43.227.220.15
43.227.220.16
43.227.220.17
43.227.220.18
43.227.220.19
43.227.220.20
43.227.220.21
43.227.220.22
43.227.220.23
43.227.220.24
43.227.220.25
43.227.220.26
43.227.220.27
43.227.220.28
43.227.220.29
43.227.220.30
43.227.220.31
43.227.220.32
43.227.220.33
43.227.220.34
43.227.220.35
43.227.220.36
43.227.220.37
43.227.220.38
43.227.220.39
43.227.220.40
43.227.220.41
43.227.220.42
43.227.220.43
43.227.220.44
43.227.220.45
43.227.220.46
43.227.220.47
43.227.220.48
43.227.220.49
43.227.220.50
43.227.220.51
43.227.220.52
43.227.220.53
43.227.220.54
43.227.220.55
43.227.220.56
43.227.220.57
43.227.220.58
43.227.220.59
43.227.220.60
43.227.220.61
43.227.220.62
43.227.220.63
43.227.220.64
43.227.220.65
43.227.220.66
43.227.220.67
43.227.220.68
43.227.220.69
43.227.220.70
43.227.220.71
43.227.220.72
43.227.220.73
43.227.220.74
43.227.220.75
43.227.220.76
43.227.220.77
43.227.220.78
43.227.220.79
43.227.220.80
43.227.220.81
43.227.220.82
43.227.220.83
43.227.220.84
43.227.220.85
43.227.220.86
43.227.220.87
43.227.220.88
43.227.220.89
43.227.220.90
43.227.220.91
43.227.220.92
43.227.220.93
43.227.220.94
43.227.220.95
43.227.220.96
43.227.220.97
43.227.220.98
43.227.220.99
43.227.220.100
43.227.220.101
43.227.220.102
43.227.220.103
43.227.220.104
43.227.220.105
43.227.220.106
43.227.220.107
43.227.220.108
43.227.220.109
43.227.220.110
43.227.220.111
43.227.220.112
43.227.220.113
43.227.220.114
43.227.220.115
43.227.220.116
43.227.220.117
43.227.220.118
43.227.220.119
43.227.220.120
43.227.220.121
43.227.220.122
43.227.220.123
43.227.220.124
43.227.220.125
43.227.220.126
43.227.220.127
43.227.220.128
43.227.220.129
43.227.220.130
43.227.220.131
43.227.220.132
43.227.220.133
43.227.220.134
43.227.220.135
43.227.220.136
43.227.220.137
43.227.220.138
43.227.220.139
43.227.220.140
43.227.220.141
43.227.220.142
43.227.220.143
43.227.220.144
43.227.220.145
43.227.220.146
43.227.220.147
43.227.220.148
43.227.220.149
43.227.220.150
43.227.220.151
43.227.220.152
43.227.220.153
43.227.220.154
43.227.220.155
43.227.220.156
43.227.220.157
43.227.220.158
43.227.220.159
43.227.220.160
43.227.220.161
43.227.220.162
43.227.220.163
43.227.220.164
43.227.220.165
43.227.220.166
43.227.220.167
43.227.220.168
43.227.220.169
43.227.220.170
43.227.220.171
43.227.220.172
43.227.220.173
43.227.220.174
43.227.220.175
43.227.220.176
43.227.220.177
43.227.220.178
43.227.220.179
43.227.220.180
43.227.220.181
43.227.220.182
43.227.220.183
43.227.220.184
43.227.220.185
43.227.220.186
43.227.220.187
43.227.220.188
43.227.220.189
43.227.220.190
43.227.220.191
43.227.220.192
43.227.220.193
43.227.220.194
43.227.220.195
43.227.220.196
43.227.220.197
43.227.220.198
43.227.220.199
43.227.220.200
43.227.220.201
43.227.220.202
43.227.220.203
43.227.220.204
43.227.220.205
43.227.220.206
43.227.220.207
43.227.220.208
43.227.220.209
43.227.220.210
43.227.220.211
43.227.220.212
43.227.220.213
43.227.220.214
43.227.220.215
43.227.220.216
43.227.220.217
43.227.220.218
43.227.220.219
43.227.220.220
43.227.220.221
43.227.220.222
43.227.220.223
43.227.220.224
43.227.220.225
43.227.220.226
43.227.220.227
43.227.220.228
43.227.220.229
43.227.220.230
43.227.220.231
43.227.220.232
43.227.220.233
43.227.220.234
43.227.220.235
43.227.220.236
43.227.220.237
43.227.220.238
43.227.220.239
43.227.220.240
43.227.220.241
43.227.220.242
43.227.220.243
43.227.220.244
43.227.220.245
43.227.220.246
43.227.220.247
43.227.220.248
43.227.220.249
43.227.220.250
43.227.220.251
43.227.220.252
43.227.220.253
43.227.220.254
43.227.220.255
)
