asn.dev

Address space

AS2553 FSU-AS - Florida State University

Education ARIN

IPv4 prefixes 27 196K addresses
IPv6 prefixes 1
Most common size /22 IPv4
Flagged 4

Shape

IPv4 prefix sizes

All IPv4
/17
/17: 3
3
/18
/18: 3
3
/19
/19: 3
3
/20
/20: 3
3
/21
/21: 3
3
/22
/22: 4
4
/23
/23: 2
2
/24
/24: 2
2
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 1
1
/28
/28: 1
1

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: 1
1

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America28

Review

Flagged prefixes

4 of 28
PrefixFamilyAddressesCountryFlags
128.186.217.16/28IPv416USToo specific
128.186.217.32/27IPv432USToo specific
128.186.217.64/26IPv464USToo specific
128.186.217.128/25IPv4128USToo specific

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