AS396973 Department of Homeland Security

DHS-39H - Department of Homeland Security · registered in the United States

IPv4 addresses1,7923 prefixes · <0.001% of announced IPv4

Rank in United States#6,571largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#24,939of 79,396 networks with IPv4

IPv62 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS396973 in ASN lookup Look up an IP in this network (208.73.184.1) All networks in United States

IPv4 prefixes

All 3 prefixes, in address order.

208.73.184.0/24
208.73.186.0/23
208.73.188.0/22

IPv6 prefixes

All 1 prefix.

2620:112:5004::/47

Other ASNs named Department of Homeland Security

1 other network uses the same organisation name; together with AS396973 they announce 75,520 IPv4 addresses.

ASNNameIPv4 addresses

AS15147DHSINETNOC - DEPARTMENT OF HOMELAND SECURITY US73,728

Similar-sized networks in United States

ASNNameIPv4 addresses

AS19054#6568 NATHNETWORK-ASN - Nath Network & Telecom Inc1,792

AS134537#6569 ATT-NBE-US - ATT NBE Equinix Seattle1,792

AS396417#6570 SFDC-IT - Salesforce, Inc.1,792

AS16871#6572 MCDONAGHBROTHERS - McDonagh Bros. Inc.1,792

AS18570#6573 ECHOSTAR-BROADCASTING-CORPORATION - EchoStar Broadcasting Corperation1,792

AS22024#6574 SPLUNK-WEST - Splunk, Inc.1,792

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