asn.dev

Address space

AS9931 CAT-AP The Communication Authoity of Thailand, CAT

Residential APNIC

IPv4 prefixes 252 278K addresses
IPv6 prefixes 190
Most common size /24 IPv4
Flagged 8

Shape

IPv4 prefix sizes

All IPv4
/18
/18: 1
1
/19
/19: 2
2
/20
/20: 19
19
/21
/21: 36
36
/22
/22: 39
39
/23
/23: 62
62
/24
/24: 85
85
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 1
1
/28
/28: 1
1
/29
/29: 1
1
/30
/30: 1
1
/31
/31: 1
1
/32
/32: 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
/36
/36: 1
1
/37
/37: 1
1
/38
/38: 2
2
/39
/39: 2
2
/40
/40: 2
2
/41
/41: 9
9
/42
/42: 8
8
/43
/43: 5
5
/44
/44: 17
17
/45
/45: 25
25
/46
/46: 30
30
/47
/47: 38
38
/48
/48: 50
50

Geography

Where the space lands

CountryNamePrefixes
THThailand442

Review

Flagged prefixes

8 of 442
PrefixFamilyAddressesCountryFlags
122.155.140.0/26IPv464THToo specific
122.155.140.64/29IPv48THToo specific
122.155.140.72/30IPv44THToo specific
122.155.140.76/31IPv42THToo specific
122.155.140.79/32IPv41THToo specific
122.155.140.80/28IPv416THToo specific
122.155.140.96/27IPv432THToo specific
122.155.140.128/25IPv4128THToo specific

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