asn.dev

Address space

AS1968 UMASSNET-AS1968

IPv4 prefixes 22 160K addresses
IPv6 prefixes 20
Most common size /23 IPv4
Flagged 0

Shape

Prefix sizes

IPv4
/16
/16: 1
1
/17
/17: 1
1
/18
/18: 1
1
/19
/19: 3
3
/20
/20: 3
3
/21
/21: 1
1
/22
/22: 2
2
/23
/23: 7
7
/24
/24: 3
3

How this network carves its IPv4 space. 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

Prefix sizes

IPv6
/30
/30: 1
1
/31
/31: 1
1
/32
/32: 1
1
/33
/33: 1
1
/35
/35: 2
2
/36
/36: 2
2
/37
/37: 2
2
/38
/38: 2
2
/39
/39: 2
2
/40
/40: 2
2
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 1
1
/44
/44: 1
1

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America42

Inventory

All prefixes

42 total