asn.dev

Address space

AS4605 ERX-HKBUNET Hong Kong Baptist University

IPv4 prefixes 20 74.24K addresses
IPv6 prefixes 1
Most common size /21 IPv4
Flagged 4

Shape

Prefix sizes

IPv4
/17
/17: 1
1
/18
/18: 1
1
/19
/19: 1
1
/20
/20: 1
1
/21
/21: 4
4
/22
/22: 2
2
/23
/23: 3
3
/24
/24: 3
3
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 2
2

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
/48
/48: 1
1

Geography

Where the space lands

CountryNamePrefixes
HKHong Kong21

Review

Flagged prefixes

4 of 21
PrefixFamilyAddressesCountryFlags
175.159.154.0/25IPv4128HKToo specific
175.159.154.128/26IPv464HKToo specific
175.159.154.192/27IPv432HKToo specific
175.159.154.224/27IPv432HKToo 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

21 total
PrefixFamilyAddressesCountryFlags
158.182.0.0/18IPv416,384HK
158.182.64.0/20IPv44,096HK
158.182.80.0/22IPv41,024HK
158.182.84.0/24IPv4256HK
158.182.85.0/24IPv4256HK
158.182.86.0/23IPv4512HK
158.182.88.0/21IPv42,048HK
158.182.96.0/19IPv48,192HK
158.182.128.0/17IPv432,768HK
175.159.144.0/21IPv42,048HK
175.159.152.0/23IPv4512HK
175.159.154.0/25IPv4128HKToo specific
175.159.154.128/26IPv464HKToo specific
175.159.154.192/27IPv432HKToo specific
175.159.154.224/27IPv432HKToo specific
175.159.155.0/24IPv4256HK
175.159.156.0/23IPv4512HK
175.159.232.0/21IPv42,048HK
202.125.240.0/21IPv42,048HK
202.125.248.0/22IPv41,024HK
2001:ce0:6::/48IPv6—HK