asn.dev

Address space

AS45102 ALIBABA-CN-NET Alibaba US Technology Co., Ltd.

Hosting APNIC

IPv4 prefixes 571 5.56M addresses
IPv6 prefixes 63
Most common size /22 IPv4
Flagged 18

Shape

IPv4 prefix sizes

All IPv4
/14
/14: 3
3
/15
/15: 5
5
/16
/16: 19
19
/17
/17: 29
29
/18
/18: 53
53
/19
/19: 57
57
/20
/20: 68
68
/21
/21: 76
76
/22
/22: 89
89
/23
/23: 84
84
/24
/24: 70
70
/25
/25: 2
2
/26
/26: 2
2
/27
/27: 2
2
/28
/28: 2
2
/29
/29: 2
2
/30
/30: 2
2
/31
/31: 2
2
/32
/32: 4
4

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
/30
/30: 2
2
/31
/31: 4
4
/32
/32: 6
6
/33
/33: 2
2
/34
/34: 2
2
/35
/35: 3
3
/36
/36: 4
4
/37
/37: 2
2
/38
/38: 2
2
/39
/39: 2
2
/40
/40: 2
2
/41
/41: 2
2
/42
/42: 2
2
/43
/43: 2
2
/44
/44: 4
4
/45
/45: 3
3
/46
/46: 6
6
/47
/47: 3
3
/48
/48: 10
10

Geography

Where the space lands

CountryNamePrefixes
CNChina634

Review

Flagged prefixes

18 of 634
PrefixFamilyAddressesCountryFlags
43.102.24.0/25IPv4128CNToo specific
43.102.24.128/28IPv416CNToo specific
43.102.24.144/31IPv42CNToo specific
43.102.24.146/32IPv41CNToo specific
43.102.24.147/32IPv41CNToo specific
43.102.24.148/30IPv44CNToo specific
43.102.24.152/29IPv48CNToo specific
43.102.24.160/27IPv432CNToo specific
43.102.24.192/26IPv464CNToo specific
43.116.96.0/26IPv464CNToo specific
43.116.96.64/29IPv48CNToo specific
43.116.96.72/30IPv44CNToo specific
43.116.96.76/31IPv42CNToo specific
43.116.96.78/32IPv41CNToo specific
43.116.96.79/32IPv41CNToo specific
43.116.96.80/28IPv416CNToo specific
43.116.96.96/27IPv432CNToo specific
43.116.96.128/25IPv4128CNToo specific

A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.