asn.dev

Address space

AS3527 NIH-NET - National Institutes of Health

Unclassified ARIN

IPv4 prefixes 63 325K addresses
IPv6 prefixes 6
Most common size /20 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/16
/16: 2
2
/18
/18: 3
3
/19
/19: 6
6
/20
/20: 13
13
/21
/21: 11
11
/22
/22: 13
13
/23
/23: 9
9
/24
/24: 6
6

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
/44
/44: 1
1
/46
/46: 2
2
/47
/47: 2
2
/48
/48: 1
1

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America69