AS12257 Dell, Inc.

EMC-AS12257 - Dell, Inc. · registered in the United States

IPv4 addresses16,12836 prefixes · <0.001% of announced IPv4

Rank in United States#2,405largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#7,140of 79,396 networks with IPv4

IPv61,027 x /483 prefixes

CountryUnited States18,679 ASNs registered there

Open AS12257 in ASN lookup Look up an IP in this network (12.7.200.1) All networks in United States

IPv4 prefixes

All 36 prefixes, in address order.

12.7.200.0/24
128.221.208.0/23
128.221.212.0/22
128.221.216.0/21
128.221.224.0/22
128.221.228.0/24
128.221.230.0/23
128.221.232.0/23
128.221.235.0/24
128.221.237.0/24
128.221.239.0/24
132.237.141.0/24
137.69.113.0/24
137.69.117.0/24
147.178.2.0/24
147.178.4.0/22
147.178.8.0/24
152.62.97.0/24
152.62.108.0/23
152.62.110.0/24
152.62.112.0/23
152.62.115.0/24
152.62.118.0/24
152.62.154.0/23
152.62.163.0/24
152.62.164.0/23
152.62.184.0/22
152.62.193.0/24
163.244.40.0/24
163.244.72.0/24
168.159.160.0/24
168.159.162.0/24
168.159.212.0/23
168.159.215.0/24
198.161.247.0/24
199.245.235.0/24

IPv6 prefixes

All 3 prefixes.

2607:f2b1:70::/47
2620:145:400::/48
2620:145:800::/38

Other ASNs named Dell, Inc.

3 other networks use the same organisation name; together with AS12257 they announce 43,264 IPv4 addresses.

ASNNameIPv4 addresses

AS3614DELL-BLK - Dell, Inc. US19,456

AS30614DELL-BLK - Dell, Inc. US7,168

AS53878EMC-AS - Dell, Inc. US512

Similar-sized networks in United States

ASNNameIPv4 addresses

AS396443#2402 WESTERN-IOWA-NETWORKS-396443 - Western Iowa Networks16,128

AS11734#2403 CONNECTRIA-ASN-1 - Connectria16,128

AS15130#2404 USDOJ-GOV - U. S. Department of Justice16,128

AS40714#2406 SS-2575 - SpaceX Services, Inc.16,128

AS12175#2407 YELMNET - Rainier Connect16,128

AS13720#2408 SONYONLINE - Daybreak Game Company LLC16,128

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources