AS18888 ZILLOW, INC.

AS-ZILLOW - ZILLOW, INC. · registered in the United States

IPv4 addresses1,2805 prefixes · <0.001% of announced IPv4

Rank in United States#7,352largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#28,202of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS18888 in ASN lookup Look up an IP in this network (64.42.187.1) All networks in United States

IPv4 prefixes

All 5 prefixes, in address order.

64.42.187.0/24
64.42.189.0/24
64.42.191.0/24
192.211.13.0/24
209.133.71.0/24

IPv6 prefixes

All 1 prefix.

2620:115:d::/48

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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