asn.dev

Address space

AS3949 NTTA-3946

IPv4 prefixes 64 33.79K addresses
IPv6 prefixes 16
Most common size /24 IPv4
Flagged 24

Shape

Prefix sizes

IPv4
/21
/21: 3
3
/22
/22: 14
14
/23
/23: 12
12
/24
/24: 27
27
/25
/25: 1
1
/26
/26: 1
1
/28
/28: 2
2
/29
/29: 3
3
/30
/30: 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
/49
/49: 1
1
/50
/50: 1
1
/51
/51: 1
1
/52
/52: 1
1
/53
/53: 1
1
/54
/54: 1
1
/55
/55: 1
1
/56
/56: 1
1
/57
/57: 1
1
/58
/58: 1
1
/59
/59: 1
1
/60
/60: 1
1
/61
/61: 1
1
/62
/62: 1
1
/63
/63: 1
1
/64
/64: 1
1

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America80

Review

Flagged prefixes

24 of 80
PrefixFamilyAddressesCountryFlags
81.93.189.64/29IPv48USToo specific
83.231.161.8/29IPv48USToo specific
103.13.83.144/28IPv416USToo specific
103.13.83.160/29IPv48USToo specific
202.68.66.76/30IPv44USToo specific
202.68.68.0/26IPv464USToo specific
202.68.75.80/28IPv416USToo specific
202.68.79.128/25IPv4128USToo specific
2407:a800:3e11::/52IPv6—USToo specific
2407:a800:3e11:1000::/56IPv6—USToo specific
2407:a800:3e11:1100::/60IPv6—USToo specific
2407:a800:3e11:1110::/61IPv6—USToo specific
2407:a800:3e11:1118::/63IPv6—USToo specific
2407:a800:3e11:111b::/64IPv6—USToo specific
2407:a800:3e11:111c::/62IPv6—USToo specific
2407:a800:3e11:1120::/59IPv6—USToo specific
2407:a800:3e11:1140::/58IPv6—USToo specific
2407:a800:3e11:1180::/57IPv6—USToo specific
2407:a800:3e11:1200::/55IPv6—USToo specific
2407:a800:3e11:1400::/54IPv6—USToo specific
2407:a800:3e11:1800::/53IPv6—USToo specific
2407:a800:3e11:2000::/51IPv6—USToo specific
2407:a800:3e11:4000::/50IPv6—USToo specific
2407:a800:3e11:8000::/49IPv6—USToo 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

80 total
PrefixFamilyAddressesCountryFlags
23.27.212.0/23IPv4512US
23.27.227.0/24IPv4256US
23.27.229.0/24IPv4256US
45.149.225.0/24IPv4256US
45.149.226.0/24IPv4256US
62.73.186.0/24IPv4256US
80.96.148.0/23IPv4512US
80.174.216.0/21IPv42,048US
81.93.189.64/29IPv48USToo specific
83.231.161.8/29IPv48USToo specific
91.123.68.0/22IPv41,024US
91.123.72.0/22IPv41,024US
103.13.83.144/28IPv416USToo specific
103.13.83.160/29IPv48USToo specific
128.121.0.0/22IPv41,024US
128.121.34.0/23IPv4512US
128.121.36.0/23IPv4512US
128.121.42.0/23IPv4512US
128.121.44.0/23IPv4512US
128.241.36.0/22IPv41,024US
128.241.84.0/22IPv41,024US
128.242.88.0/22IPv41,024US
130.94.192.0/23IPv4512US
130.94.196.0/22IPv41,024US
130.94.240.0/22IPv41,024US
131.103.28.0/23IPv4512US
131.103.118.0/23IPv4512US
131.103.136.0/23IPv4512US
136.0.49.0/24IPv4256US
136.0.62.0/24IPv4256US
136.0.69.0/24IPv4256US
140.174.96.0/21IPv42,048US
142.111.167.0/24IPv4256US
142.111.169.0/24IPv4256US
157.238.156.0/22IPv41,024US
157.238.180.0/22IPv41,024US
157.238.212.0/22IPv41,024US
165.254.22.0/24IPv4256US
165.254.29.0/24IPv4256US
165.254.31.0/24IPv4256US
165.254.34.0/23IPv4512US
165.254.54.0/24IPv4256US
165.254.56.0/24IPv4256US
165.254.59.0/24IPv4256US
166.88.42.0/23IPv4512US
166.88.103.0/24IPv4256US
171.22.145.0/24IPv4256US
185.243.129.0/24IPv4256US
193.28.144.0/24IPv4256US
193.28.148.0/24IPv4256US
193.39.136.0/24IPv4256US
202.68.66.76/30IPv44USToo specific
202.68.68.0/26IPv464USToo specific
202.68.75.80/28IPv416USToo specific
202.68.79.128/25IPv4128USToo specific
204.0.0.0/24IPv4256US
204.2.167.0/24IPv4256US
204.2.171.0/24IPv4256US
204.2.176.0/24IPv4256US
204.2.186.0/24IPv4256US
205.132.16.0/22IPv41,024US
205.132.20.0/22IPv41,024US
207.71.84.0/22IPv41,024US
217.24.64.0/21IPv42,048US
2407:a800:3e11::/52IPv6—USToo specific
2407:a800:3e11:1000::/56IPv6—USToo specific
2407:a800:3e11:1100::/60IPv6—USToo specific
2407:a800:3e11:1110::/61IPv6—USToo specific
2407:a800:3e11:1118::/63IPv6—USToo specific
2407:a800:3e11:111b::/64IPv6—USToo specific
2407:a800:3e11:111c::/62IPv6—USToo specific
2407:a800:3e11:1120::/59IPv6—USToo specific
2407:a800:3e11:1140::/58IPv6—USToo specific
2407:a800:3e11:1180::/57IPv6—USToo specific
2407:a800:3e11:1200::/55IPv6—USToo specific
2407:a800:3e11:1400::/54IPv6—USToo specific
2407:a800:3e11:1800::/53IPv6—USToo specific
2407:a800:3e11:2000::/51IPv6—USToo specific
2407:a800:3e11:4000::/50IPv6—USToo specific
2407:a800:3e11:8000::/49IPv6—USToo specific