asn.dev

Address space

AS81 NCREN

Unclassified ARIN

IPv4 prefixes 196 1.96M addresses
IPv6 prefixes 66
Most common size /24 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/14
/14: 1
1
/15
/15: 2
2
/16
/16: 8
8
/17
/17: 9
9
/18
/18: 16
16
/19
/19: 20
20
/20
/20: 21
21
/21
/21: 25
25
/22
/22: 26
26
/23
/23: 26
26
/24
/24: 42
42

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
/29
/29: 1
1
/31
/31: 2
2
/32
/32: 2
2
/33
/33: 2
2
/34
/34: 4
4
/35
/35: 4
4
/36
/36: 4
4
/37
/37: 4
4
/38
/38: 4
4
/39
/39: 4
4
/40
/40: 6
6
/41
/41: 4
4
/42
/42: 4
4
/43
/43: 4
4
/44
/44: 4
4
/45
/45: 4
4
/46
/46: 3
3
/47
/47: 3
3
/48
/48: 3
3

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America262