asn.dev

Address space

AS19122 ESTRUXTURE-ON-19122

Hosting ARIN

IPv4 prefixes 16 5.89K addresses
IPv6 prefixes 3
Most common size /24 IPv4
Flagged 8

Shape

IPv4 prefix sizes

All IPv4
/21
/21: 1
1
/22
/22: 2
2
/23
/23: 1
1
/24
/24: 4
4
/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
/48
/48: 2
2

Geography

Where the space lands

CountryNamePrefixes
CACanada19

Review

Flagged prefixes

8 of 19
PrefixFamilyAddressesCountryFlags
216.71.120.0/27IPv432CAToo specific
216.71.120.32/29IPv48CAToo specific
216.71.120.41/32IPv41CAToo specific
216.71.120.42/31IPv42CAToo specific
216.71.120.44/30IPv44CAToo specific
216.71.120.48/28IPv416CAToo specific
216.71.120.64/26IPv464CAToo specific
216.71.120.128/25IPv4128CAToo specific

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