asn.dev

Address space

AS16399 FIRSTCOMM-AS2

IPv4 prefixes 33 127K addresses
IPv6 prefixes 3
Most common size /19 IPv4
Flagged 0

Shape

Prefix sizes

IPv4
/18
/18: 2
2
/19
/19: 7
7
/20
/20: 5
5
/21
/21: 4
4
/22
/22: 4
4
/23
/23: 6
6
/24
/24: 5
5

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
/34
/34: 1
1
/35
/35: 1
1
/36
/36: 1
1

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America36

Inventory

All prefixes

36 total
PrefixFamilyAddressesCountryFlags
64.27.128.0/19IPv48,192US
66.244.160.0/19IPv48,192US
67.206.64.0/23IPv4512US
67.206.67.0/24IPv4256US
67.206.68.0/22IPv41,024US
67.206.72.0/21IPv42,048US
67.206.80.0/20IPv44,096US
69.7.192.0/22IPv41,024US
69.7.196.0/23IPv4512US
69.7.198.0/23IPv4512US
69.7.200.0/21IPv42,048US
69.7.208.0/20IPv44,096US
74.222.32.0/19IPv48,192US
168.92.0.0/23IPv4512US
168.92.2.0/23IPv4512US
168.92.4.0/22IPv41,024US
168.92.8.0/21IPv42,048US
168.92.16.0/20IPv44,096US
168.93.64.0/18IPv416,384US
168.93.128.0/18IPv416,384US
207.135.160.0/19IPv48,192US
209.45.176.0/24IPv4256US
209.170.160.0/20IPv44,096US
216.21.32.0/19IPv48,192US
216.126.206.0/24IPv4256US
216.130.96.0/19IPv48,192US
216.146.64.0/19IPv48,192US
216.159.224.0/22IPv41,024US
216.159.228.0/23IPv4512US
216.159.230.0/24IPv4256US
216.159.231.0/24IPv4256US
216.159.232.0/21IPv42,048US
216.159.240.0/20IPv44,096US
2606:7d80:1000::/36IPv6—US
2606:7d80:2000::/35IPv6—US
2606:7d80:4000::/34IPv6—US