asn.dev

Address space

AS3 MIT-GATEWAYS

IPv4 prefixes 106 1.84M addresses
IPv6 prefixes 6
Most common size /24 IPv4
Flagged 8

Shape

Prefix sizes

IPv4
/13
/13: 1
1
/15
/15: 5
5
/16
/16: 6
6
/17
/17: 3
3
/18
/18: 3
3
/19
/19: 4
4
/20
/20: 8
8
/21
/21: 11
11
/22
/22: 13
13
/23
/23: 14
14
/24
/24: 30
30
/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

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
/31
/31: 3
3
/32
/32: 3
3

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America112

Review

Flagged prefixes

8 of 112
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.

Inventory

All prefixes

112 total
PrefixFamilyAddressesCountryFlags
18.0.0.0/15IPv4131,072US
18.3.0.0/20IPv44,096US
18.3.16.0/21IPv42,048US
18.3.24.0/22IPv41,024US
18.3.28.0/24IPv4256US
18.3.29.0/24IPv4256US
18.3.30.0/23IPv4512US
18.3.32.0/19IPv48,192US
18.3.64.0/22IPv41,024US
18.3.68.0/23IPv4512US
18.3.70.0/23IPv4512US
18.3.72.0/21IPv42,048US
18.3.80.0/21IPv42,048US
18.3.88.0/23IPv4512US
18.3.90.0/24IPv4256US
18.3.91.0/24IPv4256US
18.3.92.0/22IPv41,024US
18.3.96.0/20IPv44,096US
18.3.112.0/22IPv41,024US
18.3.116.0/24IPv4256US
18.3.117.0/24IPv4256US
18.3.118.0/23IPv4512US
18.3.120.0/23IPv4512US
18.3.122.0/24IPv4256US
18.3.123.0/24IPv4256US
18.3.124.0/22IPv41,024US
18.3.128.0/20IPv44,096US
18.3.144.0/21IPv42,048US
18.3.152.0/22IPv41,024US
18.3.156.0/22IPv41,024US
18.3.160.0/19IPv48,192US
18.3.192.0/18IPv416,384US
18.4.0.0/15IPv4131,072US
18.6.0.0/16IPv465,536US
18.7.0.0/20IPv44,096US
18.7.16.0/21IPv42,048US
18.7.24.0/21IPv42,048US
18.7.32.0/24IPv4256US
18.7.33.0/24IPv4256US
18.7.34.0/24IPv4256US
18.7.35.0/24IPv4256US
18.7.36.0/22IPv41,024US
18.7.40.0/21IPv42,048US
18.7.48.0/22IPv41,024US
18.7.52.0/23IPv4512US
18.7.54.0/24IPv4256US
18.7.55.0/24IPv4256US
18.7.56.0/21IPv42,048US
18.7.64.0/20IPv44,096US
18.7.80.0/24IPv4256US
18.7.81.0/24IPv4256US
18.7.82.0/24IPv4256US
18.7.83.0/24IPv4256US
18.7.84.0/24IPv4256US
18.7.85.0/24IPv4256US
18.7.86.0/23IPv4512US
18.7.88.0/21IPv42,048US
18.7.96.0/22IPv41,024US
18.7.100.0/23IPv4512US
18.7.102.0/24IPv4256US
18.7.103.0/24IPv4256US
18.7.104.0/22IPv41,024US
18.7.108.0/24IPv4256US
18.7.109.0/24IPv4256US
18.7.110.0/23IPv4512US
18.7.112.0/20IPv44,096US
18.7.128.0/17IPv432,768US
18.8.0.0/13IPv4524,288US
18.16.0.0/15IPv4131,072US
18.18.0.0/22IPv41,024US
18.18.4.0/23IPv4512US
18.18.7.0/24IPv4256US
18.18.8.0/21IPv42,048US
18.18.16.0/20IPv44,096US
18.18.32.0/19IPv48,192US
18.18.64.0/18IPv416,384US
18.18.128.0/17IPv432,768US
18.22.0.0/15IPv4131,072US
18.25.0.0/16IPv465,536US
18.26.0.0/15IPv4131,072US
18.29.0.0/16IPv465,536US
18.31.0.0/16IPv465,536US
38.47.44.0/24IPv4256US
45.170.62.0/24IPv4256US
128.30.0.0/16IPv465,536US
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
128.31.1.0/24IPv4256US
128.31.2.0/23IPv4512US
128.31.4.0/22IPv41,024US
128.31.8.0/21IPv42,048US
128.31.16.0/20IPv44,096US
128.31.32.0/19IPv48,192US
128.31.64.0/18IPv416,384US
128.31.128.0/17IPv432,768US
128.52.0.0/16IPv465,536US
128.201.194.0/24IPv4256US
192.52.61.0/24IPv4256US
192.52.62.0/23IPv4512US
192.52.64.0/23IPv4512US
2603:4000::/31IPv6—US
2603:4007::/32IPv6—US
2603:4008::/31IPv6—US
2603:400a::/32IPv6—US
2603:4010::/31IPv6—US
2804:35c8::/32IPv6—US