asn.dev

Address space

AS6356 NERDCNET - University of Florida

Education ARIN

IPv4 prefixes 41 132K addresses
IPv6 prefixes 4
Most common size /23 IPv4
Flagged 3

Shape

IPv4 prefix sizes

All IPv4
/16
/16: 1
1
/18
/18: 1
1
/19
/19: 1
1
/20
/20: 4
4
/21
/21: 5
5
/22
/22: 8
8
/23
/23: 9
9
/24
/24: 9
9
/25
/25: 1
1
/26
/26: 2
2

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
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 2
2

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America45

Review

Flagged prefixes

3 of 45
PrefixFamilyAddressesCountryFlags
128.227.59.0/25IPv4128USToo specific
128.227.59.128/26IPv464USToo specific
128.227.59.192/26IPv464USToo specific

A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.