AS11160 COSTAR GROUP Inc.

COSTAR-SANDIEGO - COSTAR GROUP Inc. · registered in the United States

IPv4 addresses7683 prefixes · <0.001% of announced IPv4

Rank in United States#9,311largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#43,741of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS11160 in ASN lookup Look up an IP in this network (38.64.74.1) All networks in United States

IPv4 prefixes

All 3 prefixes, in address order.

38.64.74.0/24
65.200.12.0/24
204.253.48.0/24

Other ASNs named COSTAR GROUP Inc.

1 other network uses the same organisation name; together with AS11160 they announce 3,840 IPv4 addresses.

ASNNameIPv4 addresses

AS14652COSTARGROUPASN - COSTAR GROUP Inc. US3,072

Similar-sized networks in United States

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AS11166#9312 JCOM-3 - J2 Cloud Services, LLC768

AS11199#9313 SHOWNETSAS - showNets LLC768

AS11230#9314 MHSFL - Managed Hosting Services, LLC768

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