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  Your ip: 3.90.45.27      GE-INTERNET     AS14618     
United States  
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Autonomous System 4538

AS nameERX-CERNET-BKB
Reg. date2002-08-01
Organization China Education and Research Network Center, Tsinghua University, Beijing 100084
IDIRT-CERNET-AP
Country
CN, China
RIRAPNIC
prefix count149
unique ip count17.169.152
ipv4 peers 50


Autonomous system 4538 (ERX-CERNET-BKB) is delegated to organization China Education and Research Network Center, Tsinghua University, Beijing 100084 with ID IRT-CERNET-AP by global register APNIC. Organization is placed in CN, China. All Autonomous systems in CN, China can be found here. All registered ipv4 network blocks and autonomous systems for organization IRT-CERNET-AP can be found here. Number of announced originated prefixes for autonomous system 4538: 149. Number of announced unique ipv4 addresses: 17.169.152. BGP upstreams and clients of autonomous system 4538 can be found here. List of announced originated prefixes of AS4538 is placed below.


Updated: 2019.06.26

Announced originated prefixes

N I prefix D start stop size
1
1.51.0.0/16
1.51.0.0 1.51.255.255 65536
2
1.184.0.0/15
1.184.0.0 1.185.255.255 131072
3
42.244.0.0/14
42.244.0.0 42.247.255.255 262144
4
42.244.0.0/16
42.244.0.0 42.244.255.255 65536
5
42.245.0.0/16
42.245.0.0 42.245.255.255 65536
6
42.246.0.0/15
42.246.0.0 42.247.255.255 131072
7
42.247.2.0/24
42.247.2.0 42.247.2.255 256
8
42.247.5.0/24
42.247.5.0 42.247.5.255 256
9
42.247.9.0/24
42.247.9.0 42.247.9.255 256
10
42.247.19.0/24
42.247.19.0 42.247.19.255 256
11
49.52.0.0/14
49.52.0.0 49.55.255.255 262144
12
49.52.0.0/15
49.52.0.0 49.53.255.255 131072
13
49.120.0.0/14
49.120.0.0 49.123.255.255 262144
14
49.122.128.0/18
49.122.128.0 49.122.191.255 16384
15
49.140.0.0/15
49.140.0.0 49.141.255.255 131072
16
49.208.0.0/15
49.208.0.0 49.209.255.255 131072
17
58.154.0.0/15
58.154.0.0 58.155.255.255 131072
18
58.155.0.0/16
58.155.0.0 58.155.255.255 65536
19 58.192.0.0/12
58.192.0.0 58.207.255.255 1048576
20
58.192.0.0/15
58.192.0.0 58.193.255.255 131072
21
58.192.69.0/24
58.192.69.0 58.192.69.255 256
22
58.196.0.0/15
58.196.0.0 58.197.255.255 131072
23
58.198.0.0/15
58.198.0.0 58.199.255.255 131072
24
58.200.0.0/13
58.200.0.0 58.207.255.255 524288
25
58.200.0.0/19
58.200.0.0 58.200.31.255 8192
26
58.200.64.0/18
58.200.64.0 58.200.127.255 16384
27
58.200.128.0/17
58.200.128.0 58.200.255.255 32768
28
58.200.131.0/24
58.200.131.0 58.200.131.255 256
29
58.200.141.0/24
58.200.141.0 58.200.141.255 256
30
58.200.173.0/24
58.200.173.0 58.200.173.255 256
31 59.64.0.0/12
59.64.0.0 59.79.255.255 1048576
32
59.64.0.0/14
59.64.0.0 59.67.255.255 262144
33
101.4.0.0/14
101.4.0.0 101.7.255.255 262144
34
101.4.156.0/24
101.4.156.0 101.4.156.255 256
35
101.7.241.0/24
101.7.241.0 101.7.241.255 256
36
101.76.0.0/15
101.76.0.0 101.77.255.255 131072
37
103.137.60.0/24
103.137.60.0 103.137.60.255 256
38
110.64.0.0/15
110.64.0.0 110.65.255.255 131072
39
110.64.0.0/16
110.64.0.0 110.64.255.255 65536
40
110.65.0.0/16
110.65.0.0 110.65.255.255 65536
41
111.114.0.0/15
111.114.0.0 111.115.255.255 131072
42
111.116.0.0/15
111.116.0.0 111.117.255.255 131072
43
111.117.0.0/16
111.117.0.0 111.117.255.255 65536
44
111.186.0.0/15
111.186.0.0 111.187.255.255 131072
45
113.54.0.0/15
113.54.0.0 113.55.255.255 131072
46
114.212.0.0/15
114.212.0.0 114.213.255.255 131072
47
114.212.0.0/16
114.212.0.0 114.212.255.255 65536
48
114.214.0.0/16
114.214.0.0 114.214.255.255 65536
49
115.24.0.0/14
115.24.0.0 115.27.255.255 262144
50
115.26.64.0/18
115.26.64.0 115.26.127.255 16384
51
115.154.0.0/15
115.154.0.0 115.155.255.255 131072
52
115.156.0.0/15
115.156.0.0 115.157.255.255 131072
53
115.158.0.0/16
115.158.0.0 115.158.255.255 65536
54
116.13.0.0/16
116.13.0.0 116.13.255.255 65536
55
116.56.0.0/15
116.56.0.0 116.57.255.255 131072
56
118.202.0.0/15
118.202.0.0 118.203.255.255 131072
57
118.228.0.0/15
118.228.0.0 118.229.255.255 131072
58
118.228.152.0/21
118.228.152.0 118.228.159.255 2048
59
118.230.0.0/16
118.230.0.0 118.230.255.255 65536
60
118.230.96.0/19
118.230.96.0 118.230.127.255 8192
61 120.94.0.0/15
120.94.0.0 120.95.255.255 131072
62
120.94.0.0/16
120.94.0.0 120.94.255.255 65536
63
120.95.0.0/16
120.95.0.0 120.95.255.255 65536
64
121.48.0.0/15
121.48.0.0 121.49.255.255 131072
65
121.52.160.0/19
121.52.160.0 121.52.191.255 8192
66 121.192.0.0/14
121.192.0.0 121.195.255.255 262144
67
121.192.0.0/15
121.192.0.0 121.193.255.255 131072
68
121.192.0.0/16
121.192.0.0 121.192.255.255 65536
69
121.193.0.0/16
121.193.0.0 121.193.255.255 65536
70
121.194.0.0/15
121.194.0.0 121.195.255.255 131072
71
121.248.0.0/14
121.248.0.0 121.251.255.255 262144
72
121.250.0.0/15
121.250.0.0 121.251.255.255 131072
73
122.204.0.0/14
122.204.0.0 122.207.255.255 262144
74 125.216.0.0/13
125.216.0.0 125.223.255.255 524288
75
125.216.0.0/15
125.216.0.0 125.217.255.255 131072
76
162.105.0.0/16
162.105.0.0 162.105.255.255 65536
77
166.111.0.0/16
166.111.0.0 166.111.255.255 65536
78
175.185.0.0/16
175.185.0.0 175.185.255.255 65536
79
175.186.0.0/15
175.186.0.0 175.187.255.255 131072
80
180.84.0.0/15
180.84.0.0 180.85.255.255 131072
81
180.201.0.0/16
180.201.0.0 180.201.255.255 65536
82
180.208.0.0/15
180.208.0.0 180.209.255.255 131072
83
183.168.0.0/15
183.168.0.0 183.169.255.255 131072
84
183.170.0.0/16
183.170.0.0 183.170.255.255 65536
85
183.172.0.0/14
183.172.0.0 183.175.255.255 262144
86
183.175.64.0/19
183.175.64.0 183.175.95.255 8192
87
183.175.96.0/20
183.175.96.0 183.175.111.255 4096
88
202.4.128.0/19
202.4.128.0 202.4.159.255 8192
89 202.38.64.0/18
202.38.64.0 202.38.127.255 16384
90
202.38.99.0/24
202.38.99.0 202.38.99.255 256
91
202.38.104.0/24
202.38.104.0 202.38.104.255 256
92
202.38.105.0/24
202.38.105.0 202.38.105.255 256
93
202.38.108.0/22
202.38.108.0 202.38.111.255 1024
94
202.38.110.0/24
202.38.110.0 202.38.110.255 256
95
202.38.112.0/21
202.38.112.0 202.38.119.255 2048
96
202.38.140.0/23
202.38.140.0 202.38.141.255 512
97
202.38.184.0/21
202.38.184.0 202.38.191.255 2048
98
202.38.192.0/18
202.38.192.0 202.38.255.255 16384
99 202.112.0.0/13
202.112.0.0 202.119.255.255 524288
100
202.112.0.0/14
202.112.0.0 202.115.255.255 262144
101
202.112.0.0/15
202.112.0.0 202.113.255.255 131072
102
202.112.0.0/16
202.112.0.0 202.112.255.255 65536
103
202.112.61.0/24
202.112.61.0 202.112.61.255 256
104
202.114.0.0/15
202.114.0.0 202.115.255.255 131072
105
202.116.0.0/15
202.116.0.0 202.117.255.255 131072
106
202.118.0.0/15
202.118.0.0 202.119.255.255 131072
107
202.119.0.0/16
202.119.0.0 202.119.255.255 65536
108 202.120.0.0/15
202.120.0.0 202.121.255.255 131072
109
202.127.216.0/21
202.127.216.0 202.127.223.255 2048
110 202.127.224.0/19
202.127.224.0 202.127.255.255 8192
111
202.127.232.0/21
202.127.232.0 202.127.239.255 2048
112
202.127.240.0/20
202.127.240.0 202.127.255.255 4096
113 202.192.0.0/12
202.192.0.0 202.207.255.255 1048576
114
202.192.0.0/13
202.192.0.0 202.199.255.255 524288
115
202.192.0.0/15
202.192.0.0 202.193.255.255 131072
116
202.194.0.0/15
202.194.0.0 202.195.255.255 131072
117
202.196.0.0/15
202.196.0.0 202.197.255.255 131072
118
202.198.0.0/15
202.198.0.0 202.199.255.255 131072
119
202.200.0.0/13
202.200.0.0 202.207.255.255 524288
120
202.206.176.0/20
202.206.176.0 202.206.191.255 4096
121
203.91.120.0/21
203.91.120.0 203.91.127.255 2048
122
203.91.120.0/22
203.91.120.0 203.91.123.255 1024
123
210.25.0.0/16
210.25.0.0 210.25.255.255 65536
124 210.26.0.0/15
210.26.0.0 210.27.255.255 131072
125 210.28.0.0/14
210.28.0.0 210.31.255.255 262144
126 210.32.0.0/12
210.32.0.0 210.47.255.255 1048576
127
210.35.64.0/21
210.35.64.0 210.35.71.255 2048
128
210.37.80.0/20
210.37.80.0 210.37.95.255 4096
129 211.64.0.0/13
211.64.0.0 211.71.255.255 524288
130
211.65.0.0/16
211.65.0.0 211.65.255.255 65536
131 211.80.0.0/13
211.80.0.0 211.87.255.255 524288
132 218.192.0.0/13
218.192.0.0 218.199.255.255 524288
133 219.216.0.0/13
219.216.0.0 219.223.255.255 524288
134 219.224.0.0/13
219.224.0.0 219.231.255.255 524288
135
219.224.0.0/14
219.224.0.0 219.227.255.255 262144
136
219.224.101.0/24
219.224.101.0 219.224.101.255 256
137
219.225.128.0/19
219.225.128.0 219.225.159.255 8192
138
219.225.128.0/24
219.225.128.0 219.225.128.255 256
139
219.227.0.0/16
219.227.0.0 219.227.255.255 65536
140
219.242.0.0/15
219.242.0.0 219.243.255.255 131072
141
219.244.0.0/14
219.244.0.0 219.247.255.255 262144
142 222.16.0.0/12
222.16.0.0 222.31.255.255 1048576
143
222.16.0.0/13
222.16.0.0 222.23.255.255 524288
144
222.24.0.0/13
222.24.0.0 222.31.255.255 524288
145
222.28.0.0/14
222.28.0.0 222.31.255.255 262144
146 222.192.0.0/12
222.192.0.0 222.207.255.255 1048576
147
222.199.0.0/16
222.199.0.0 222.199.255.255 65536
148
223.2.0.0/15
223.2.0.0 223.3.255.255 131072
149
223.128.0.0/15
223.128.0.0 223.129.255.255 131072