50.57.169.* rDNS大全

美国伊利诺伊芝加哥

序号 iP ptr 发现时间 更新时间
1 50.57.169.4 50-57-169-4.static.cloud-ips.com. 2021-06-10 2024-01-22
2 50.57.169.5 50-57-169-5.static.cloud-ips.com. 2021-06-10 2024-01-22
3 50.57.169.6 50-57-169-6.static.cloud-ips.com. 2021-06-10 2024-01-22
4 50.57.169.7 50-57-169-7.static.cloud-ips.com. 2021-06-10 2024-01-22
5 50.57.169.8 50-57-169-8.static.cloud-ips.com. 2021-06-10 2024-01-22
6 50.57.169.9 50-57-169-9.static.cloud-ips.com. 2021-06-10 2024-01-22
7 50.57.169.10 50-57-169-10.static.cloud-ips.com. 2021-06-10 2024-01-22
8 50.57.169.11 50-57-169-11.static.cloud-ips.com. 2021-06-10 2024-01-22
9 50.57.169.12 50-57-169-12.static.cloud-ips.com. 2021-06-10 2024-01-22
10 50.57.169.13 50-57-169-13.static.cloud-ips.com. 2021-06-10 2024-01-22
11 50.57.169.14 50-57-169-14.static.cloud-ips.com. 2021-06-10 2024-01-22
12 50.57.169.15 50-57-169-15.static.cloud-ips.com. 2021-06-10 2024-01-22
13 50.57.169.16 50-57-169-16.static.cloud-ips.com. 2021-06-10 2024-01-22
14 50.57.169.18 50-57-169-18.static.cloud-ips.com. 2021-06-10 2024-01-22
15 50.57.169.19 50-57-169-19.static.cloud-ips.com. 2021-06-10 2024-01-22
16 50.57.169.20 50-57-169-20.static.cloud-ips.com. 2021-06-10 2024-01-22
17 50.57.169.21 50-57-169-21.static.cloud-ips.com. 2021-06-10 2024-01-22
18 50.57.169.22 50-57-169-22.static.cloud-ips.com. 2021-06-10 2024-01-22
19 50.57.169.23 50-57-169-23.static.cloud-ips.com. 2021-06-10 2024-01-22
20 50.57.169.24 50-57-169-24.static.cloud-ips.com. 2021-06-10 2024-01-22
21 50.57.169.25 50-57-169-25.static.cloud-ips.com. 2021-06-10 2024-01-22
22 50.57.169.26 50-57-169-26.static.cloud-ips.com. 2021-06-10 2024-01-22
23 50.57.169.27 50-57-169-27.static.cloud-ips.com. 2021-06-10 2024-01-22
24 50.57.169.28 50-57-169-28.static.cloud-ips.com. 2021-06-10 2024-01-22
25 50.57.169.29 50-57-169-29.static.cloud-ips.com. 2021-06-10 2024-01-22
26 50.57.169.30 50-57-169-30.static.cloud-ips.com. 2021-06-10 2024-01-22
27 50.57.169.31 50-57-169-31.static.cloud-ips.com. 2021-06-10 2024-01-22
28 50.57.169.32 50-57-169-32.static.cloud-ips.com. 2021-06-10 2024-01-22
29 50.57.169.33 50-57-169-33.static.cloud-ips.com. 2021-06-10 2024-01-22
30 50.57.169.34 50-57-169-34.static.cloud-ips.com. 2021-06-10 2024-01-22
31 50.57.169.35 50-57-169-35.static.cloud-ips.com. 2021-06-10 2024-01-22
32 50.57.169.36 50-57-169-36.static.cloud-ips.com. 2021-06-10 2024-01-22
33 50.57.169.37 50-57-169-37.static.cloud-ips.com. 2021-06-10 2024-01-22
34 50.57.169.38 50-57-169-38.static.cloud-ips.com. 2021-06-10 2024-01-22
35 50.57.169.39 50-57-169-39.static.cloud-ips.com. 2021-06-10 2024-01-22
36 50.57.169.41 50-57-169-41.static.cloud-ips.com. 2021-06-10 2024-01-22
37 50.57.169.42 50-57-169-42.static.cloud-ips.com. 2021-06-10 2024-01-22
38 50.57.169.43 50-57-169-43.static.cloud-ips.com. 2021-06-10 2024-01-22
39 50.57.169.44 50-57-169-44.static.cloud-ips.com. 2021-06-10 2024-01-22
40 50.57.169.45 50-57-169-45.static.cloud-ips.com. 2021-06-10 2024-01-22
41 50.57.169.46 50-57-169-46.static.cloud-ips.com. 2021-06-10 2024-01-22
42 50.57.169.47 50-57-169-47.static.cloud-ips.com. 2021-06-10 2024-01-22
43 50.57.169.48 50-57-169-48.static.cloud-ips.com. 2021-06-10 2024-01-22
44 50.57.169.49 50-57-169-49.static.cloud-ips.com. 2021-06-10 2024-01-22
45 50.57.169.50 50-57-169-50.static.cloud-ips.com. 2021-06-10 2024-01-22
46 50.57.169.51 50-57-169-51.static.cloud-ips.com. 2021-06-10 2024-01-22
47 50.57.169.53 50-57-169-53.static.cloud-ips.com. 2021-06-10 2024-01-22
48 50.57.169.54 50-57-169-54.static.cloud-ips.com. 2021-06-10 2024-01-22
49 50.57.169.55 50-57-169-55.static.cloud-ips.com. 2021-06-10 2024-01-22
50 50.57.169.56 50-57-169-56.static.cloud-ips.com. 2021-06-10 2024-01-22
51 50.57.169.57 50-57-169-57.static.cloud-ips.com. 2021-06-10 2024-01-22
52 50.57.169.58 50-57-169-58.static.cloud-ips.com. 2021-06-10 2024-01-22
53 50.57.169.59 50-57-169-59.static.cloud-ips.com. 2021-06-10 2024-01-22
54 50.57.169.60 50-57-169-60.static.cloud-ips.com. 2021-06-10 2024-01-22
55 50.57.169.61 50-57-169-61.static.cloud-ips.com. 2021-06-10 2024-01-22
56 50.57.169.62 50-57-169-62.static.cloud-ips.com. 2021-06-10 2024-01-22
57 50.57.169.63 50-57-169-63.static.cloud-ips.com. 2021-06-10 2024-01-22
58 50.57.169.64 50-57-169-64.static.cloud-ips.com. 2021-06-10 2024-01-22
59 50.57.169.65 50-57-169-65.static.cloud-ips.com. 2021-06-10 2024-01-22
60 50.57.169.66 50-57-169-66.static.cloud-ips.com. 2021-06-10 2024-01-22
61 50.57.169.67 50-57-169-67.static.cloud-ips.com. 2021-06-10 2024-01-22
62 50.57.169.68 50-57-169-68.static.cloud-ips.com. 2021-06-10 2024-01-22
63 50.57.169.69 50-57-169-69.static.cloud-ips.com. 2021-06-10 2024-01-22
64 50.57.169.70 50-57-169-70.static.cloud-ips.com. 2021-06-10 2024-01-22
65 50.57.169.71 50-57-169-71.static.cloud-ips.com. 2021-06-10 2024-01-22
66 50.57.169.72 50-57-169-72.static.cloud-ips.com. 2021-06-10 2024-01-22
67 50.57.169.73 50-57-169-73.static.cloud-ips.com. 2021-06-10 2024-01-22
68 50.57.169.74 50-57-169-74.static.cloud-ips.com. 2021-06-10 2024-01-22
69 50.57.169.75 50-57-169-75.static.cloud-ips.com. 2021-06-10 2024-01-22
70 50.57.169.76 50-57-169-76.static.cloud-ips.com. 2021-06-10 2024-01-22
71 50.57.169.77 50-57-169-77.static.cloud-ips.com. 2021-06-10 2024-01-22
72 50.57.169.78 50-57-169-78.static.cloud-ips.com. 2021-06-10 2024-01-22
73 50.57.169.79 50-57-169-79.static.cloud-ips.com. 2021-06-10 2024-01-22
74 50.57.169.80 50-57-169-80.static.cloud-ips.com. 2021-06-10 2024-01-22
75 50.57.169.81 50-57-169-81.static.cloud-ips.com. 2021-06-10 2024-01-22
76 50.57.169.82 50-57-169-82.static.cloud-ips.com. 2021-06-10 2024-01-22
77 50.57.169.83 50-57-169-83.static.cloud-ips.com. 2021-06-10 2024-01-22
78 50.57.169.84 50-57-169-84.static.cloud-ips.com. 2021-06-10 2024-01-22
79 50.57.169.85 50-57-169-85.static.cloud-ips.com. 2021-06-10 2024-01-22
80 50.57.169.86 50-57-169-86.static.cloud-ips.com. 2021-06-10 2024-01-22
81 50.57.169.87 50-57-169-87.static.cloud-ips.com. 2021-06-10 2024-01-22
82 50.57.169.88 50-57-169-88.static.cloud-ips.com. 2021-06-10 2024-01-22
83 50.57.169.89 50-57-169-89.static.cloud-ips.com. 2021-06-10 2024-01-22
84 50.57.169.90 50-57-169-90.static.cloud-ips.com. 2021-06-10 2024-01-22
85 50.57.169.91 50-57-169-91.static.cloud-ips.com. 2021-06-10 2024-01-22
86 50.57.169.92 50-57-169-92.static.cloud-ips.com. 2021-06-10 2024-01-22
87 50.57.169.93 50-57-169-93.static.cloud-ips.com. 2021-06-10 2024-01-22
88 50.57.169.94 50-57-169-94.static.cloud-ips.com. 2021-06-10 2024-01-22
89 50.57.169.95 50-57-169-95.static.cloud-ips.com. 2021-06-10 2024-01-22
90 50.57.169.96 50-57-169-96.static.cloud-ips.com. 2021-06-10 2024-01-22
91 50.57.169.97 50-57-169-97.static.cloud-ips.com. 2021-06-10 2024-01-22
92 50.57.169.98 50-57-169-98.static.cloud-ips.com. 2021-06-10 2024-01-22
93 50.57.169.99 50-57-169-99.static.cloud-ips.com. 2021-06-10 2024-01-22
94 50.57.169.100 50-57-169-100.static.cloud-ips.com. 2021-06-10 2024-01-22
95 50.57.169.102 50-57-169-102.static.cloud-ips.com. 2021-06-10 2024-01-22
96 50.57.169.103 50-57-169-103.static.cloud-ips.com. 2021-06-10 2024-01-22
97 50.57.169.104 50-57-169-104.static.cloud-ips.com. 2021-06-10 2024-01-22
98 50.57.169.105 50-57-169-105.static.cloud-ips.com. 2021-06-10 2024-01-22
99 50.57.169.106 50-57-169-106.static.cloud-ips.com. 2021-06-10 2024-01-22
100 50.57.169.107 50-57-169-107.static.cloud-ips.com. 2021-06-10 2024-01-22
101 50.57.169.108 50-57-169-108.static.cloud-ips.com. 2021-06-10 2024-01-22
102 50.57.169.109 50-57-169-109.static.cloud-ips.com. 2021-06-10 2024-01-22
103 50.57.169.110 50-57-169-110.static.cloud-ips.com. 2021-06-10 2024-01-22
104 50.57.169.111 50-57-169-111.static.cloud-ips.com. 2021-06-10 2024-01-22
105 50.57.169.112 50-57-169-112.static.cloud-ips.com. 2021-06-10 2024-01-22
106 50.57.169.113 50-57-169-113.static.cloud-ips.com. 2021-06-10 2024-01-22
107 50.57.169.114 50-57-169-114.static.cloud-ips.com. 2021-06-10 2024-01-22
108 50.57.169.115 50-57-169-115.static.cloud-ips.com. 2021-06-10 2024-01-22
109 50.57.169.116 50-57-169-116.static.cloud-ips.com. 2021-06-10 2024-01-22
110 50.57.169.117 50-57-169-117.static.cloud-ips.com. 2021-06-10 2024-01-22
111 50.57.169.119 50-57-169-119.static.cloud-ips.com. 2021-06-10 2024-01-22
112 50.57.169.120 50-57-169-120.static.cloud-ips.com. 2021-06-10 2024-01-22
113 50.57.169.121 50-57-169-121.static.cloud-ips.com. 2021-06-10 2024-01-22
114 50.57.169.123 50-57-169-123.static.cloud-ips.com. 2021-06-10 2024-01-22
115 50.57.169.124 50-57-169-124.static.cloud-ips.com. 2021-06-10 2024-01-22
116 50.57.169.125 50-57-169-125.static.cloud-ips.com. 2021-06-10 2024-01-22
117 50.57.169.126 50-57-169-126.static.cloud-ips.com. 2021-06-10 2024-01-22
118 50.57.169.127 50-57-169-127.static.cloud-ips.com. 2021-06-10 2024-01-22
119 50.57.169.128 50-57-169-128.static.cloud-ips.com. 2021-06-10 2024-01-22
120 50.57.169.130 50-57-169-130.static.cloud-ips.com. 2021-06-10 2024-01-22
121 50.57.169.131 50-57-169-131.static.cloud-ips.com. 2021-06-10 2024-01-22
122 50.57.169.132 50-57-169-132.static.cloud-ips.com. 2021-06-10 2024-01-22
123 50.57.169.133 50-57-169-133.static.cloud-ips.com. 2021-06-10 2024-01-22
124 50.57.169.134 50-57-169-134.static.cloud-ips.com. 2021-06-10 2024-01-22
125 50.57.169.135 50-57-169-135.static.cloud-ips.com. 2021-06-10 2024-01-22
126 50.57.169.136 50-57-169-136.static.cloud-ips.com. 2021-06-10 2024-01-22
127 50.57.169.137 50-57-169-137.static.cloud-ips.com. 2021-06-10 2024-01-22
128 50.57.169.138 50-57-169-138.static.cloud-ips.com. 2021-06-10 2024-01-22
129 50.57.169.140 50-57-169-140.static.cloud-ips.com. 2021-06-10 2024-01-22
130 50.57.169.141 50-57-169-141.static.cloud-ips.com. 2021-06-10 2024-01-22
131 50.57.169.142 50-57-169-142.static.cloud-ips.com. 2021-06-10 2024-01-22
132 50.57.169.143 50-57-169-143.static.cloud-ips.com. 2021-06-10 2024-01-22
133 50.57.169.144 50-57-169-144.static.cloud-ips.com. 2021-06-10 2024-01-22
134 50.57.169.145 50-57-169-145.static.cloud-ips.com. 2021-06-10 2024-01-22
135 50.57.169.146 50-57-169-146.static.cloud-ips.com. 2021-06-10 2024-01-22
136 50.57.169.147 50-57-169-147.static.cloud-ips.com. 2021-06-10 2024-01-22
137 50.57.169.148 50-57-169-148.static.cloud-ips.com. 2021-06-10 2024-01-22
138 50.57.169.149 50-57-169-149.static.cloud-ips.com. 2021-06-10 2024-01-22
139 50.57.169.150 50-57-169-150.static.cloud-ips.com. 2021-06-10 2024-01-22
140 50.57.169.151 50-57-169-151.static.cloud-ips.com. 2021-06-10 2024-01-22
141 50.57.169.152 50-57-169-152.static.cloud-ips.com. 2021-06-10 2024-01-22
142 50.57.169.153 50-57-169-153.static.cloud-ips.com. 2021-06-10 2024-01-22
143 50.57.169.154 50-57-169-154.static.cloud-ips.com. 2021-06-10 2024-01-22
144 50.57.169.155 50-57-169-155.static.cloud-ips.com. 2021-06-10 2024-01-22
145 50.57.169.156 50-57-169-156.static.cloud-ips.com. 2021-06-10 2024-01-22
146 50.57.169.159 50-57-169-159.static.cloud-ips.com. 2021-06-10 2024-01-22
147 50.57.169.160 50-57-169-160.static.cloud-ips.com. 2021-06-10 2024-01-22
148 50.57.169.161 50-57-169-161.static.cloud-ips.com. 2021-06-10 2024-01-22
149 50.57.169.162 50-57-169-162.static.cloud-ips.com. 2021-06-10 2024-01-22
150 50.57.169.163 50-57-169-163.static.cloud-ips.com. 2021-06-10 2024-01-22
151 50.57.169.164 50-57-169-164.static.cloud-ips.com. 2021-06-10 2024-01-22
152 50.57.169.165 50-57-169-165.static.cloud-ips.com. 2021-06-10 2024-01-22
153 50.57.169.166 50-57-169-166.static.cloud-ips.com. 2021-06-10 2024-01-22
154 50.57.169.167 50-57-169-167.static.cloud-ips.com. 2021-06-10 2024-01-22
155 50.57.169.168 50-57-169-168.static.cloud-ips.com. 2021-06-10 2024-01-22
156 50.57.169.169 50-57-169-169.static.cloud-ips.com. 2021-06-10 2024-01-22
157 50.57.169.170 50-57-169-170.static.cloud-ips.com. 2021-06-10 2024-01-22
158 50.57.169.171 50-57-169-171.static.cloud-ips.com. 2021-06-10 2024-01-22
159 50.57.169.172 50-57-169-172.static.cloud-ips.com. 2021-06-10 2024-01-22
160 50.57.169.173 50-57-169-173.static.cloud-ips.com. 2021-06-10 2024-01-22
161 50.57.169.174 50-57-169-174.static.cloud-ips.com. 2021-06-10 2024-01-22
162 50.57.169.175 50-57-169-175.static.cloud-ips.com. 2021-06-10 2024-01-22
163 50.57.169.176 50-57-169-176.static.cloud-ips.com. 2021-06-10 2024-01-22
164 50.57.169.177 50-57-169-177.static.cloud-ips.com. 2021-06-10 2024-01-22
165 50.57.169.178 50-57-169-178.static.cloud-ips.com. 2021-06-10 2024-01-22
166 50.57.169.179 50-57-169-179.static.cloud-ips.com. 2021-06-10 2024-01-22
167 50.57.169.180 50-57-169-180.static.cloud-ips.com. 2021-06-10 2024-01-22
168 50.57.169.181 50-57-169-181.static.cloud-ips.com. 2021-06-10 2024-01-22
169 50.57.169.182 50-57-169-182.static.cloud-ips.com. 2021-06-10 2024-01-22
170 50.57.169.183 50-57-169-183.static.cloud-ips.com. 2021-06-10 2024-01-22
171 50.57.169.184 50-57-169-184.static.cloud-ips.com. 2021-06-10 2024-01-22
172 50.57.169.185 50-57-169-185.static.cloud-ips.com. 2021-06-10 2024-01-22
173 50.57.169.186 50-57-169-186.static.cloud-ips.com. 2021-06-10 2024-01-22
174 50.57.169.187 50-57-169-187.static.cloud-ips.com. 2021-06-10 2024-01-22
175 50.57.169.188 50-57-169-188.static.cloud-ips.com. 2021-06-10 2024-01-22
176 50.57.169.189 50-57-169-189.static.cloud-ips.com. 2021-06-10 2024-01-22
177 50.57.169.190 50-57-169-190.static.cloud-ips.com. 2021-06-10 2024-01-22
178 50.57.169.191 50-57-169-191.static.cloud-ips.com. 2021-06-10 2024-01-22
179 50.57.169.192 50-57-169-192.static.cloud-ips.com. 2021-06-10 2024-01-22
180 50.57.169.193 50-57-169-193.static.cloud-ips.com. 2021-06-10 2024-01-22
181 50.57.169.194 50-57-169-194.static.cloud-ips.com. 2021-06-10 2024-01-22
182 50.57.169.195 50-57-169-195.static.cloud-ips.com. 2021-06-10 2024-01-22
183 50.57.169.196 50-57-169-196.static.cloud-ips.com. 2021-06-10 2024-01-22
184 50.57.169.197 50-57-169-197.static.cloud-ips.com. 2021-06-10 2024-01-22
185 50.57.169.198 50-57-169-198.static.cloud-ips.com. 2021-06-10 2024-01-22
186 50.57.169.199 50-57-169-199.static.cloud-ips.com. 2021-06-10 2024-01-22
187 50.57.169.200 50-57-169-200.static.cloud-ips.com. 2021-06-10 2024-01-22
188 50.57.169.201 50-57-169-201.static.cloud-ips.com. 2021-06-10 2024-01-22
189 50.57.169.202 50-57-169-202.static.cloud-ips.com. 2021-06-10 2024-01-22
190 50.57.169.203 50-57-169-203.static.cloud-ips.com. 2021-06-10 2024-01-22
191 50.57.169.205 50-57-169-205.static.cloud-ips.com. 2021-06-10 2024-01-22
192 50.57.169.206 50-57-169-206.static.cloud-ips.com. 2021-06-10 2024-01-22
193 50.57.169.207 50-57-169-207.static.cloud-ips.com. 2021-06-10 2024-01-22
194 50.57.169.208 50-57-169-208.static.cloud-ips.com. 2021-06-10 2024-01-22
195 50.57.169.209 50-57-169-209.static.cloud-ips.com. 2021-06-10 2024-01-22
196 50.57.169.211 50-57-169-211.static.cloud-ips.com. 2021-06-10 2024-01-22
197 50.57.169.212 50-57-169-212.static.cloud-ips.com. 2021-06-10 2024-01-22
198 50.57.169.213 50-57-169-213.static.cloud-ips.com. 2021-06-10 2024-01-22
199 50.57.169.214 50-57-169-214.static.cloud-ips.com. 2021-06-10 2024-01-22
200 50.57.169.215 50-57-169-215.static.cloud-ips.com. 2021-06-10 2024-01-22
201 50.57.169.216 50-57-169-216.static.cloud-ips.com. 2021-06-10 2024-01-22
202 50.57.169.218 50-57-169-218.static.cloud-ips.com. 2021-06-10 2024-01-22
203 50.57.169.219 50-57-169-219.static.cloud-ips.com. 2021-06-10 2024-01-22
204 50.57.169.220 50-57-169-220.static.cloud-ips.com. 2021-06-10 2024-01-22
205 50.57.169.222 50-57-169-222.static.cloud-ips.com. 2021-06-10 2024-01-22
206 50.57.169.223 50-57-169-223.static.cloud-ips.com. 2021-06-10 2024-01-22
207 50.57.169.224 50-57-169-224.static.cloud-ips.com. 2021-06-10 2024-01-22
208 50.57.169.225 50-57-169-225.static.cloud-ips.com. 2021-06-10 2024-01-22
209 50.57.169.226 50-57-169-226.static.cloud-ips.com. 2021-06-10 2024-01-22
210 50.57.169.227 50-57-169-227.static.cloud-ips.com. 2021-06-10 2024-01-22
211 50.57.169.229 50-57-169-229.static.cloud-ips.com. 2021-06-10 2024-01-22
212 50.57.169.230 50-57-169-230.static.cloud-ips.com. 2021-06-10 2024-01-22
213 50.57.169.231 50-57-169-231.static.cloud-ips.com. 2021-06-10 2024-01-22
214 50.57.169.235 50-57-169-235.static.cloud-ips.com. 2021-06-10 2024-01-22
215 50.57.169.236 50-57-169-236.static.cloud-ips.com. 2021-06-10 2024-01-22
216 50.57.169.237 50-57-169-237.static.cloud-ips.com. 2021-06-10 2024-01-22
217 50.57.169.238 50-57-169-238.static.cloud-ips.com. 2021-06-10 2024-01-22
218 50.57.169.239 50-57-169-239.static.cloud-ips.com. 2021-06-10 2024-01-22
219 50.57.169.240 50-57-169-240.static.cloud-ips.com. 2021-06-10 2024-01-22
220 50.57.169.243 50-57-169-243.static.cloud-ips.com. 2021-06-10 2024-01-22
221 50.57.169.244 50-57-169-244.static.cloud-ips.com. 2021-06-10 2024-01-22
222 50.57.169.245 50-57-169-245.static.cloud-ips.com. 2021-06-10 2024-01-22
223 50.57.169.246 50-57-169-246.static.cloud-ips.com. 2021-06-10 2024-01-22
224 50.57.169.247 50-57-169-247.static.cloud-ips.com. 2021-06-10 2024-01-22
225 50.57.169.248 50-57-169-248.static.cloud-ips.com. 2021-06-10 2024-01-22
226 50.57.169.249 50-57-169-249.static.cloud-ips.com. 2021-06-10 2024-01-22
227 50.57.169.250 50-57-169-250.static.cloud-ips.com. 2021-06-10 2024-01-22
228 50.57.169.251 50-57-169-251.static.cloud-ips.com. 2021-06-10 2024-01-22
229 50.57.169.252 50-57-169-252.static.cloud-ips.com. 2021-06-10 2024-01-22
230 50.57.169.253 50-57-169-253.static.cloud-ips.com. 2021-06-10 2024-01-22
231 50.57.169.254 50-57-169-254.static.cloud-ips.com. 2021-06-10 2024-01-22

在50.57.169.0/24查找旁站 在50.57.169.0/24查找定位历史