Public DNS Directory

Public DNS Servers in United States

1,613 currently listed resolvers across 80 represented ASNs. Measurements describe observed DNS responses, not recommendation or trust.

Resolvers

Showing 50 of 1613 currently listed resolvers.

IP AddressLocationASN / NetworkReliabilityMore
172.64.37.173United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.174United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.175United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.176United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.180United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%2 / 2 successful · 14 day window
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172.64.37.181United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.19United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.192United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%16 / 16 successful · 14 day window
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172.64.37.196United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.200United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.201United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%2 / 2 successful · 14 day window
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172.64.37.204United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.207United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%2 / 2 successful · 14 day window
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172.64.37.208United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.211United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%2 / 2 successful · 14 day window
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172.64.37.212United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.216United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.218United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.228United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.229United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.234United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.235United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.236United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.237United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.238United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.245United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.25United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.250United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.251United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.252United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.254United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.31United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%2 / 2 successful · 14 day window
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172.64.37.39United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.42United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.47United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%2 / 2 successful · 14 day window
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172.64.37.5United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.51United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.55United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.56United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%2 / 2 successful · 14 day window
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172.64.37.58United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.68United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.70United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.72United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.74United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.76United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.81United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.83United StatesAS13335Cloudflare, Inc.cloudflare.com100.0%15 / 15 successful · 14 day window
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172.64.37.89United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.91United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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172.64.37.92United StatesAS13335Cloudflare, Inc.cloudflare.comCollecting1 measurement
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How to read this table

“Collecting” means exactly one retained observation and intentionally has no percentage. With two or more observations, the displayed percentage and successful/total count use the stated rolling window. An em dash means the field was not measured or reported.

A resolver responding to this collector does not establish an uptime guarantee, security property, ownership intent, or suitability for your use case.

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Country, ASN, organization, and network data powered by IPinfo Lite. Resolver measurement data is collected by WhatIsMyIP; hostnames are from reverse DNS when available.

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