Address space

AS12257 EMC-AS12257

IPv4 prefixes 36 16.13K addresses

IPv6 prefixes 4

Most common size /24 IPv4

Flagged 0

Shape

Prefix sizes

IPv4

/21

/22

/23

/24

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

/38

/47

/48

Geography

Where the space lands

Country	Name	Prefixes
US	United States of America	40

Inventory

All prefixes

40 total

Prefix	Family	Addresses	Country
12.7.200.0/24	IPv4	256	US
128.221.208.0/23	IPv4	512	US
128.221.212.0/22	IPv4	1,024	US
128.221.216.0/21	IPv4	2,048	US
128.221.224.0/22	IPv4	1,024	US
128.221.228.0/24	IPv4	256	US
128.221.230.0/23	IPv4	512	US
128.221.232.0/23	IPv4	512	US
128.221.235.0/24	IPv4	256	US
128.221.237.0/24	IPv4	256	US
128.221.239.0/24	IPv4	256	US
132.237.141.0/24	IPv4	256	US
137.69.113.0/24	IPv4	256	US
137.69.117.0/24	IPv4	256	US
147.178.2.0/24	IPv4	256	US
147.178.4.0/22	IPv4	1,024	US
147.178.8.0/24	IPv4	256	US
152.62.97.0/24	IPv4	256	US
152.62.108.0/23	IPv4	512	US
152.62.110.0/24	IPv4	256	US
152.62.112.0/23	IPv4	512	US
152.62.115.0/24	IPv4	256	US
152.62.118.0/24	IPv4	256	US
152.62.154.0/23	IPv4	512	US
152.62.163.0/24	IPv4	256	US
152.62.164.0/23	IPv4	512	US
152.62.184.0/22	IPv4	1,024	US
152.62.193.0/24	IPv4	256	US
163.244.40.0/24	IPv4	256	US
163.244.72.0/24	IPv4	256	US
168.159.160.0/24	IPv4	256	US
168.159.162.0/24	IPv4	256	US
168.159.212.0/23	IPv4	512	US
168.159.215.0/24	IPv4	256	US
198.161.247.0/24	IPv4	256	US
199.245.235.0/24	IPv4	256	US
2607:f2b1:70::/47	IPv6	—	US
2620:145:400::/48	IPv6	—	US
2620:145:800::/38	IPv6	—	US
2a01:6f40:f100::/48	IPv6	—	US