asn.dev

Address space

AS7602 SPT-AS-VN Sai gon Postel Corporation

Unclassified APNIC Cable/DSL/ISP

IPv4 prefixes 52 104K addresses
IPv6 prefixes 17
Most common size /21 IPv4
Flagged 17

Shape

IPv4 prefix sizes

All IPv4
/18
/18: 1
1
/19
/19: 5
5
/20
/20: 4
4
/21
/21: 9
9
/22
/22: 8
8
/23
/23: 5
5
/24
/24: 3
3
/25
/25: 3
3
/26
/26: 3
3
/27
/27: 3
3
/28
/28: 3
3
/29
/29: 2
2
/30
/30: 2
2
/31
/31: 1
1

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
/33
/33: 1
1
/34
/34: 1
1
/35
/35: 1
1
/36
/36: 1
1
/37
/37: 1
1
/38
/38: 1
1
/39
/39: 1
1
/40
/40: 1
1
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 1
1
/44
/44: 1
1
/45
/45: 1
1
/46
/46: 1
1
/47
/47: 1
1
/48
/48: 2
2

Geography

Where the space lands

CountryNamePrefixes
VNViet Nam69

Review

Flagged prefixes

17 of 69
PrefixFamilyAddressesCountryFlags
221.133.12.0/25IPv4128VNToo specific
221.133.12.128/30IPv44VNToo specific
221.133.12.136/29IPv48VNToo specific
221.133.12.144/28IPv416VNToo specific
221.133.12.160/27IPv432VNToo specific
221.133.12.192/26IPv464VNToo specific
221.133.14.0/28IPv416VNToo specific
221.133.14.32/27IPv432VNToo specific
221.133.14.64/26IPv464VNToo specific
221.133.14.128/25IPv4128VNToo specific
221.133.29.0/29IPv48VNToo specific
221.133.29.10/31IPv42VNToo specific
221.133.29.12/30IPv44VNToo specific
221.133.29.16/28IPv416VNToo specific
221.133.29.32/27IPv432VNToo specific
221.133.29.64/26IPv464VNToo specific
221.133.29.128/25IPv4128VNToo specific

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