asn.dev

Address space

AS4 ISI-AS

Unclassified ARIN

IPv4 prefixes 27 65.54K addresses
IPv6 prefixes 6
Most common size /24 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/17
/17: 1
1
/19
/19: 1
1
/20
/20: 3
3
/21
/21: 1
1
/22
/22: 4
4
/23
/23: 7
7
/24
/24: 10
10

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
/32
/32: 2
2
/47
/47: 1
1
/48
/48: 3
3

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America33