asn.dev

Address space

AS2153 CENIC-2153

Unclassified ARIN

IPv4 prefixes 10 3.14K addresses
IPv6 prefixes 45
Most common size /24 IPv4
Flagged 44

Shape

IPv4 prefix sizes

All IPv4
/23
/23: 3
3
/24
/24: 6
6
/26
/26: 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
/40
/40: 1
1
/48
/48: 1
1
/92
/92: 1
1
/93
/93: 1
1
/94
/94: 1
1
/95
/95: 1
1
/96
/96: 1
1
/97
/97: 1
1
/98
/98: 1
1
/99
/99: 1
1
/100
/100: 1
1
/101
/101: 1
1
/102
/102: 1
1
/103
/103: 1
1
/104
/104: 1
1
/105
/105: 1
1
/106
/106: 1
1
/107
/107: 1
1
/108
/108: 1
1
/109
/109: 1
1
/110
/110: 1
1
/112
/112: 2
2
/113
/113: 2
2
/114
/114: 2
2
/115
/115: 2
2
/116
/116: 2
2
/117
/117: 2
2
/118
/118: 2
2
/119
/119: 2
2
/120
/120: 2
2
/121
/121: 2
2
/122
/122: 2
2
/123
/123: 2
2

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America55

Review

Flagged prefixes

44 of 55
PrefixFamilyAddressesCountryFlags
198.188.2.0/26IPv464USToo specific
2607:f380::100:0:0/92IPv6/92USToo specific
2607:f380:1::100:0:0/93IPv6/93USToo specific
2607:f380:1::108:0:0/97IPv6/97USToo specific
2607:f380:1::108:8000:0/100IPv6/100USToo specific
2607:f380:1::108:9000:0/101IPv6/101USToo specific
2607:f380:1::108:9800:0/103IPv6/103USToo specific
2607:f380:1::108:9a00:0/106IPv6/106USToo specific
2607:f380:1::108:9a40:0/112IPv6/112USToo specific
2607:f380:1::108:9a41:0/113IPv6/113USToo specific
2607:f380:1::108:9a41:8000/117IPv6/117USToo specific
2607:f380:1::108:9a41:8800/119IPv6/119USToo specific
2607:f380:1::108:9a41:8a00/120IPv6/120USToo specific
2607:f380:1::108:9a41:8b00/121IPv6/121USToo specific
2607:f380:1::108:9a41:8b80/122IPv6/122USToo specific
2607:f380:1::108:9a41:8be0/123IPv6/123USToo specific
2607:f380:1::108:9a41:8c00/118IPv6/118USToo specific
2607:f380:1::108:9a41:9000/116IPv6/116USToo specific
2607:f380:1::108:9a41:a000/115IPv6/115USToo specific
2607:f380:1::108:9a41:c000/114IPv6/114USToo specific
2607:f380:1::108:9a42:0/114IPv6/114USToo specific
2607:f380:1::108:9a42:4000/115IPv6/115USToo specific
2607:f380:1::108:9a42:6000/117IPv6/117USToo specific
2607:f380:1::108:9a42:6800/118IPv6/118USToo specific
2607:f380:1::108:9a42:6c00/119IPv6/119USToo specific

The first 25. Every flag also shows in the IPv4 and IPv6 lists.

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