asn.dev

Address space

AS4837 CHINA169-BACKBONE CHINA UNICOM China169 Backbone

Mobile DROP-listed space APNIC

IPv4 prefixes 3,753 57.27M addresses
IPv6 prefixes 2,149
Most common size /22 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/11
/11: 1
1
/12
/12: 5
5
/13
/13: 18
18
/14
/14: 31
31
/15
/15: 63
63
/16
/16: 108
108
/17
/17: 179
179
/18
/18: 262
262
/19
/19: 349
349
/20
/20: 445
445
/21
/21: 538
538
/22
/22: 640
640
/23
/23: 571
571
/24
/24: 543
543

A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.

Shape

IPv6 prefix sizes

All IPv6
/29
/29: 3
3
/30
/30: 22
22
/31
/31: 60
60
/32
/32: 92
92
/33
/33: 65
65
/34
/34: 78
78
/35
/35: 76
76
/36
/36: 69
69
/37
/37: 106
106
/38
/38: 117
117
/39
/39: 124
124
/40
/40: 127
127
/41
/41: 121
121
/42
/42: 132
132
/43
/43: 127
127
/44
/44: 147
147
/45
/45: 148
148
/46
/46: 153
153
/47
/47: 154
154
/48
/48: 228
228

Geography

Where the space lands

CountryNamePrefixes
CNChina5,902