AS22238 Defense Advanced Research Projects Agency(DARPA)

DARPA - Defense Advanced Research Projects Agency(DARPA) · registered in the United States

IPv4 addresses1,5366 prefixes · <0.001% of announced IPv4

Rank in United States#7,010largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#26,554of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS22238 in ASN lookup Look up an IP in this network (158.63.2.1) All networks in United States

IPv4 prefixes

All 6 prefixes, in address order.

158.63.2.0/24
158.63.4.0/24
158.63.250.0/24
158.63.254.0/24
192.5.18.0/24
192.187.8.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS22009#7007 IDM - INTERNET DATA MANAGEMENT, INC.1,536

AS22075#7008 AS-OUTBRAIN - Outbrain, Inc.1,536

AS22097#7009 KLGATES - K&L Gates, LLP1,536

AS22391#7011 BCIS-BEXAR-COUNTY-INFORMATION-SERVICES - Bexar County - Information Technology1,536

AS22803#7012 NOV-AS - National Oilwell Varco, Inc.1,536

AS23023#7013 INTUITIVE - Intuitive Surgical, Inc.1,536

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