asn.dev

Address space

AS131429 MOBIFONE-AS-VN MOBIFONE Corporation

Unclassified APNIC

IPv4 prefixes 54 59.58K addresses
IPv6 prefixes 85
Most common size /22 IPv4
Flagged 7

Shape

IPv4 prefix sizes

All IPv4
/20
/20: 6
6
/21
/21: 6
6
/22
/22: 14
14
/23
/23: 11
11
/24
/24: 10
10
/26
/26: 1
1
/27
/27: 3
3
/28
/28: 1
1
/29
/29: 2
2

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
/41
/41: 2
2
/42
/42: 5
5
/43
/43: 8
8
/44
/44: 5
5
/45
/45: 12
12
/46
/46: 14
14
/47
/47: 15
15
/48
/48: 24
24

Geography

Where the space lands

CountryNamePrefixes
VNViet Nam139

Review

Flagged prefixes

7 of 139
PrefixFamilyAddressesCountryFlags
103.199.24.24/29IPv48VNToo specific
103.199.24.32/27IPv432VNToo specific
103.199.24.80/28IPv416VNToo specific
103.199.24.96/27IPv432VNToo specific
103.199.24.136/29IPv48VNToo specific
103.199.24.160/27IPv432VNToo specific
103.199.24.192/26IPv464VNToo specific

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