asn.dev

Address space

AS3 MIT-GATEWAYS

Education ARIN

IPv4 prefixes 96 1.84M addresses
IPv6 prefixes 6
Most common size /24 IPv4
Flagged 8

Shape

IPv4 prefix sizes

All IPv4
/13
/13: 1
1
/15
/15: 5
5
/16
/16: 7
7
/17
/17: 2
2
/18
/18: 2
2
/19
/19: 3
3
/20
/20: 7
7
/21
/21: 10
10
/22
/22: 12
12
/23
/23: 13
13
/24
/24: 26
26
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 1
1
/28
/28: 1
1
/29
/29: 1
1
/30
/30: 1
1
/31
/31: 1
1
/32
/32: 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
/31
/31: 3
3
/32
/32: 3
3

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America102

Review

Flagged prefixes

8 of 102
PrefixFamilyAddressesCountryFlags
128.31.0.0/27IPv432USToo specific
128.31.0.32/30IPv44USToo specific
128.31.0.36/31IPv42USToo specific
128.31.0.38/32IPv41USToo specific
128.31.0.40/29IPv48USToo specific
128.31.0.48/28IPv416USToo specific
128.31.0.64/26IPv464USToo specific
128.31.0.128/25IPv4128USToo specific

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