asn.dev

Address space

AS7497 CSTNET-AS-AP Computer Network Information Center of Chinese Academy of Sciences CNIC-CAS

Education APNIC

IPv4 prefixes 316 868K addresses
IPv6 prefixes 221
Most common size /24 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/15
/15: 1
1
/16
/16: 3
3
/17
/17: 2
2
/18
/18: 3
3
/19
/19: 14
14
/20
/20: 23
23
/21
/21: 47
47
/22
/22: 56
56
/23
/23: 79
79
/24
/24: 88
88

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
/31
/31: 1
1
/32
/32: 7
7
/33
/33: 8
8
/34
/34: 10
10
/35
/35: 9
9
/36
/36: 10
10
/37
/37: 12
12
/38
/38: 12
12
/39
/39: 12
12
/40
/40: 12
12
/41
/41: 12
12
/42
/42: 12
12
/43
/43: 10
10
/44
/44: 12
12
/45
/45: 13
13
/46
/46: 19
19
/47
/47: 26
26
/48
/48: 24
24

Geography

Where the space lands

CountryNamePrefixes
CNChina537