asn.dev

Address space

AS10867 FHDA-AS - Foothill-DeAnza Community College District

Education ARIN

IPv4 prefixes 22 65.80K addresses
IPv6 prefixes 0
Most common size /20 IPv4
Flagged 6

Shape

IPv4 prefix sizes

All IPv4
/18
/18: 1
1
/19
/19: 3
3
/20
/20: 4
4
/21
/21: 2
2
/22
/22: 3
3
/23
/23: 1
1
/24
/24: 2
2
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 1
1
/28
/28: 2
2
/29
/29: 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

This network announces no IPv6 we can see.

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America22

Review

Flagged prefixes

6 of 22
PrefixFamilyAddressesCountryFlags
153.18.251.0/27IPv432USToo specific
153.18.251.32/28IPv416USToo specific
153.18.251.48/28IPv416USToo specific
153.18.251.64/26IPv464USToo specific
153.18.251.128/25IPv4128USToo specific
198.188.255.72/29IPv48USToo specific

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