251.111.81开头的IP是哪里的IP,IP地址列表: 251.111.81.* (251.111.81.0 - 251.111.81.254)

这是第一个字节为251，第二个字节为111，第三个字节为81，第四个字节在0 - 255之间的IP地址列表，表示为251.111.81.* (251.111.81.0 - 251.111.81.255)。

这个IP地址列表中包含256个IP地址，我们以其中一个IP地址251.111.81.1为例，来描述这个IP的属性：

第一个IP地址例子

但这只是其中1个IP地址的例子，并不代表这个列表中所有的IP地址都有同样的属性，如果需要了解其它IP和更详细的IP地址段信息，请点击下面列表中的标题链接。

内容:

• 1. 第一个IP地址例子
• 2. E类IP地址列表
• 3. 最后一个IP地址例子

251.111.81.1是一个保留的IP地址。保留的IP地址段不会在互联网上使用，因此与广域网相连的路由器在处理保留IP地址时，只是将该数据包丢弃处理，而不会路由到广域网上去。从而将保留IP地址产生的数据隔离在局域网内部。更多详情：251.111.81.1。

E类地址的前4位恒为1111，预置前4位为1意味着E类地址开始于128 + 64 + 32 + 16 = 240。

E类IP地址范围：240.0.0.0 ~ 255.255.255.255。

E类IPv4地址不区分网络地址与主机地址。

E类IP地址保留为以后使用，通常用于研究之用。因此Internet上没有可用的E类地址。

如果您需要了解E类IP地址段详情，可以点击E类IP地址列表中的标题链接。

• 251.111.81.0
• 251.111.81.1
• 251.111.81.2
• 251.111.81.3
• 251.111.81.4
• 251.111.81.5
• 251.111.81.6
• 251.111.81.7
• 251.111.81.8
• 251.111.81.9
• 251.111.81.10
• 251.111.81.11
• 251.111.81.12
• 251.111.81.13
• 251.111.81.14
• 251.111.81.15
• 251.111.81.16
• 251.111.81.17
• 251.111.81.18
• 251.111.81.19
• 251.111.81.20
• 251.111.81.21
• 251.111.81.22
• 251.111.81.23
• 251.111.81.24
• 251.111.81.25
• 251.111.81.26
• 251.111.81.27
• 251.111.81.28
• 251.111.81.29
• 251.111.81.30
• 251.111.81.31
• 251.111.81.32
• 251.111.81.33
• 251.111.81.34
• 251.111.81.35
• 251.111.81.36
• 251.111.81.37
• 251.111.81.38
• 251.111.81.39
• 251.111.81.40
• 251.111.81.41
• 251.111.81.42
• 251.111.81.43
• 251.111.81.44
• 251.111.81.45
• 251.111.81.46
• 251.111.81.47
• 251.111.81.48
• 251.111.81.49
• 251.111.81.50
• 251.111.81.51
• 251.111.81.52
• 251.111.81.53
• 251.111.81.54
• 251.111.81.55
• 251.111.81.56
• 251.111.81.57
• 251.111.81.58
• 251.111.81.59
• 251.111.81.60
• 251.111.81.61
• 251.111.81.62
• 251.111.81.63
• 251.111.81.64
• 251.111.81.65
• 251.111.81.66
• 251.111.81.67
• 251.111.81.68
• 251.111.81.69
• 251.111.81.70
• 251.111.81.71
• 251.111.81.72
• 251.111.81.73
• 251.111.81.74
• 251.111.81.75
• 251.111.81.76
• 251.111.81.77
• 251.111.81.78
• 251.111.81.79
• 251.111.81.80
• 251.111.81.81
• 251.111.81.82
• 251.111.81.83
• 251.111.81.84
• 251.111.81.85
• 251.111.81.86
• 251.111.81.87
• 251.111.81.88
• 251.111.81.89
• 251.111.81.90
• 251.111.81.91
• 251.111.81.92
• 251.111.81.93
• 251.111.81.94
• 251.111.81.95
• 251.111.81.96
• 251.111.81.97
• 251.111.81.98
• 251.111.81.99
• 251.111.81.100
• 251.111.81.101
• 251.111.81.102
• 251.111.81.103
• 251.111.81.104
• 251.111.81.105
• 251.111.81.106
• 251.111.81.107
• 251.111.81.108
• 251.111.81.109
• 251.111.81.110
• 251.111.81.111
• 251.111.81.112
• 251.111.81.113
• 251.111.81.114
• 251.111.81.115
• 251.111.81.116
• 251.111.81.117
• 251.111.81.118
• 251.111.81.119
• 251.111.81.120
• 251.111.81.121
• 251.111.81.122
• 251.111.81.123
• 251.111.81.124
• 251.111.81.125
• 251.111.81.126
• 251.111.81.127
• 251.111.81.128
• 251.111.81.129
• 251.111.81.130
• 251.111.81.131
• 251.111.81.132
• 251.111.81.133
• 251.111.81.134
• 251.111.81.135
• 251.111.81.136
• 251.111.81.137
• 251.111.81.138
• 251.111.81.139
• 251.111.81.140
• 251.111.81.141
• 251.111.81.142
• 251.111.81.143
• 251.111.81.144
• 251.111.81.145
• 251.111.81.146
• 251.111.81.147
• 251.111.81.148
• 251.111.81.149
• 251.111.81.150
• 251.111.81.151
• 251.111.81.152
• 251.111.81.153
• 251.111.81.154
• 251.111.81.155
• 251.111.81.156
• 251.111.81.157
• 251.111.81.158
• 251.111.81.159
• 251.111.81.160
• 251.111.81.161
• 251.111.81.162
• 251.111.81.163
• 251.111.81.164
• 251.111.81.165
• 251.111.81.166
• 251.111.81.167
• 251.111.81.168
• 251.111.81.169
• 251.111.81.170
• 251.111.81.171
• 251.111.81.172
• 251.111.81.173
• 251.111.81.174
• 251.111.81.175
• 251.111.81.176
• 251.111.81.177
• 251.111.81.178
• 251.111.81.179
• 251.111.81.180
• 251.111.81.181
• 251.111.81.182
• 251.111.81.183
• 251.111.81.184
• 251.111.81.185
• 251.111.81.186
• 251.111.81.187
• 251.111.81.188
• 251.111.81.189
• 251.111.81.190
• 251.111.81.191
• 251.111.81.192
• 251.111.81.193
• 251.111.81.194
• 251.111.81.195
• 251.111.81.196
• 251.111.81.197
• 251.111.81.198
• 251.111.81.199
• 251.111.81.200
• 251.111.81.201
• 251.111.81.202
• 251.111.81.203
• 251.111.81.204
• 251.111.81.205
• 251.111.81.206
• 251.111.81.207
• 251.111.81.208
• 251.111.81.209
• 251.111.81.210
• 251.111.81.211
• 251.111.81.212
• 251.111.81.213
• 251.111.81.214
• 251.111.81.215
• 251.111.81.216
• 251.111.81.217
• 251.111.81.218
• 251.111.81.219
• 251.111.81.220
• 251.111.81.221
• 251.111.81.222
• 251.111.81.223
• 251.111.81.224
• 251.111.81.225
• 251.111.81.226
• 251.111.81.227
• 251.111.81.228
• 251.111.81.229
• 251.111.81.230
• 251.111.81.231
• 251.111.81.232
• 251.111.81.233
• 251.111.81.234
• 251.111.81.235
• 251.111.81.236
• 251.111.81.237
• 251.111.81.238
• 251.111.81.239
• 251.111.81.240
• 251.111.81.241
• 251.111.81.242
• 251.111.81.243
• 251.111.81.244
• 251.111.81.245
• 251.111.81.246
• 251.111.81.247
• 251.111.81.248
• 251.111.81.249
• 251.111.81.250
• 251.111.81.251
• 251.111.81.252
• 251.111.81.253
• 251.111.81.254
• 251.111.81.255

251.111.81.255是一个保留的IP地址。保留的IP地址段不会在互联网上使用，因此与广域网相连的路由器在处理保留IP地址时，只是将该数据包丢弃处理，而不会路由到广域网上去。从而将保留IP地址产生的数据隔离在局域网内部。更多详情：251.111.81.255。