asn.dev

Address space

AS24158 TAIWANMOBILE-AS Taiwan Mobile Co., Ltd.

Unclassified ARIN

IPv4 prefixes 73 542K addresses
IPv6 prefixes 39
Most common size /20 IPv4
Flagged 2

Shape

IPv4 prefix sizes

All IPv4
/16
/16: 2
2
/17
/17: 4
4
/18
/18: 6
6
/19
/19: 10
10
/20
/20: 14
14
/21
/21: 12
12
/22
/22: 12
12
/23
/23: 7
7
/24
/24: 6
6

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
/39
/39: 1
1
/40
/40: 1
1
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 5
5
/44
/44: 5
5
/45
/45: 5
5
/46
/46: 3
3
/47
/47: 6
6
/48
/48: 9
9
/56
/56: 2
2

Geography

Where the space lands

CountryNamePrefixes
TWTaiwan, Province of China112

Review

Flagged prefixes

2 of 112
PrefixFamilyAddressesCountryFlags
2001:4546:1000:8f00::/56IPv6/56TWToo specific
2001:4546:1000:da00::/56IPv6/56TWToo specific

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