asn.dev

Address space

AS17638 CHINATELECOM-TJ-AS-AP ASN for TIANJIN Provincial Net of CT

Unclassified APNIC

IPv4 prefixes 382 586K addresses
IPv6 prefixes 64
Most common size /23 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/18
/18: 8
8
/19
/19: 8
8
/20
/20: 31
31
/21
/21: 49
49
/22
/22: 78
78
/23
/23: 112
112
/24
/24: 96
96

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
/32
/32: 3
3
/33
/33: 2
2
/34
/34: 4
4
/35
/35: 4
4
/36
/36: 3
3
/37
/37: 3
3
/38
/38: 3
3
/39
/39: 3
3
/40
/40: 3
3
/41
/41: 4
4
/42
/42: 4
4
/43
/43: 4
4
/44
/44: 4
4
/45
/45: 5
5
/46
/46: 4
4
/47
/47: 6
6
/48
/48: 5
5

Geography

Where the space lands

CountryNamePrefixes
CNChina446