asn.dev

Address space

AS2497 IIJ Internet Initiative Japan Inc.

Unclassified DROP-listed space APNIC

IPv4 prefixes 240 4.10M addresses
IPv6 prefixes 8
Most common size /24 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/15
/15: 2
2
/16
/16: 40
40
/17
/17: 18
18
/18
/18: 17
17
/19
/19: 22
22
/20
/20: 18
18
/21
/21: 20
20
/22
/22: 20
20
/23
/23: 26
26
/24
/24: 57
57

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: 4
4
/35
/35: 1
1
/47
/47: 2
2
/48
/48: 1
1

Geography

Where the space lands

CountryNamePrefixes
JPJapan248