AS25878 Quinstreet, Inc.

QNST-DC01 - Quinstreet, Inc. · registered in the United States

IPv4 addresses2,5607 prefixes · <0.001% of announced IPv4

Rank in United States#5,670largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#20,074of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS25878 in ASN lookup Look up an IP in this network (64.84.40.1) All networks in United States

IPv4 prefixes

All 7 prefixes, in address order.

64.84.40.0/23
67.106.145.0/24
70.42.22.0/23
173.226.108.0/24
216.211.163.0/24
216.211.170.0/23
216.211.175.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

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AS25984#5672 MEDSTARHEALTH - MedStar Health2,560

AS26396#5673 MIDWAYNET-ASN - MidwayNet, LLC.2,560

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