asn.dev

Address space

AS1540 DNIC-ASBLK-01534-01546 - Headquarters, USAISC

Unclassified ARIN

IPv4 prefixes 1,228 7.43M addresses
IPv6 prefixes 63
Most common size /24 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/13
/13: 1
1
/14
/14: 2
2
/15
/15: 4
4
/16
/16: 49
49
/17
/17: 22
22
/18
/18: 33
33
/19
/19: 45
45
/20
/20: 82
82
/21
/21: 122
122
/22
/22: 181
181
/23
/23: 269
269
/24
/24: 418
418

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
/48
/48: 63
63

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America1,291