asn.dev

Address space

AS18403 FPT-AS-AP FPT Telecom Company

Residential APNIC

IPv4 prefixes 993 1.42M addresses
IPv6 prefixes 1,459
Most common size /24 IPv4
Flagged 5

Shape

IPv4 prefix sizes

All IPv4
/18
/18: 7
7
/19
/19: 36
36
/20
/20: 81
81
/21
/21: 138
138
/22
/22: 194
194
/23
/23: 246
246
/24
/24: 286
286
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 1
1
/28
/28: 1
1
/29
/29: 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
/32
/32: 1
1
/34
/34: 1
1
/35
/35: 5
5
/36
/36: 7
7
/37
/37: 13
13
/38
/38: 18
18
/39
/39: 34
34
/40
/40: 57
57
/41
/41: 74
74
/42
/42: 137
137
/43
/43: 244
244
/44
/44: 310
310
/45
/45: 167
167
/46
/46: 208
208
/47
/47: 177
177
/48
/48: 6
6

Geography

Where the space lands

CountryNamePrefixes
VNViet Nam2,452

Review

Flagged prefixes

5 of 2,452
PrefixFamilyAddressesCountryFlags
58.187.205.0/25IPv4128VNToo specific
58.187.205.128/27IPv432VNToo specific
58.187.205.160/29IPv48VNToo specific
58.187.205.176/28IPv416VNToo specific
58.187.205.192/26IPv464VNToo specific

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