asn.dev

Address space

AS3662 HARNET Joint Universities Computer Centre Limited

IPv4 prefixes 9 1.76K addresses
IPv6 prefixes 30
Most common size /24 IPv4
Flagged 3

Shape

Prefix sizes

IPv4
/24
/24: 6
6
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 1
1

How this network carves its IPv4 space. 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

Prefix sizes

IPv6
/33
/33: 1
1
/34
/34: 1
1
/36
/36: 2
2
/37
/37: 1
1
/38
/38: 3
3
/39
/39: 3
3
/40
/40: 3
3
/41
/41: 2
2
/42
/42: 2
2
/43
/43: 2
2
/44
/44: 2
2
/45
/45: 1
1
/46
/46: 2
2
/47
/47: 3
3
/48
/48: 2
2

Geography

Where the space lands

CountryNamePrefixes
HKHong Kong39

Review

Flagged prefixes

3 of 39
PrefixFamilyAddressesCountryFlags
203.188.112.0/25IPv4128HKToo specific
203.188.112.160/27IPv432HKToo specific
203.188.112.192/26IPv464HKToo specific

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

Inventory

All prefixes

39 total