A directory of public DNS resolvers — IP addresses, filtering policy, and whether each one offers DNS-over-HTTPS. Free to download as CSV, JSON or XML. 57 of these entries were compiled from each operator's public documentation and have not been checked against the resolver itself. Treat them as a starting point, not a measurement. DNS Lister v2.421.1 https://dnslister.com/providers 94.140.14.14 4 AdGuard DNS ads_trackers Filtered — ads/trackers dns.adguard-dns.com AdGuard DNS (Default) — blocks ads and trackers network-wide; no adult-content or malware-specific filtering beyond that. 94.140.15.15 4 AdGuard DNS ads_trackers Filtered — ads/trackers dns.adguard-dns.com AdGuard DNS (Default) — blocks ads and trackers network-wide; no adult-content or malware-specific filtering beyond that. 2a10:50c0::ad1:ff 6 AdGuard DNS_IPv6 ads_trackers Filtered — ads/trackers dns.adguard-dns.com AdGuard DNS (Default), IPv6 — same service as the IPv4 AdGuard DNS row above. 2a10:50c0::ad2:ff 6 AdGuard DNS_IPv6 ads_trackers Filtered — ads/trackers dns.adguard-dns.com AdGuard DNS (Default), IPv6 — same service as the IPv4 AdGuard DNS row above. 94.140.14.15 4 AdGuard Family DNS family Filtered — ads/trackers + adult content + forced SafeSearch family.adguard-dns.com AdGuard Family Protection — adds adult-content blocking and forces SafeSearch on top of the default ad/tracker blocking. 2a10:50c0::bad1:ff 6 AdGuard Family DNS_IPv6 family Filtered — ads/trackers + adult content + forced SafeSearch family.adguard-dns.com AdGuard Family Protection, IPv6 — same service as the IPv4 row above. 94.140.14.140 4 AdGuard NoFilter DNS unfiltered Unfiltered unfiltered.adguard-dns.com AdGuard NoFilter — same anycast network as AdGuard's other tiers, with all filtering turned off; a plain unfiltered resolver. 2a10:50c0::1:ff 6 AdGuard NoFilter DNS_IPv6 unfiltered Unfiltered unfiltered.adguard-dns.com AdGuard NoFilter, IPv6 — same service as the IPv4 row above. 76.223.122.150 4 Alternate DNS ads_trackers Filtered — ads/trackers Alternate DNS — free ad- and tracker-blocking resolver aimed at consumers who want pi-hole-style blocking without running their own server. 76.76.19.19 4 Alternate DNS ads_trackers Filtered — ads/trackers Alternate DNS — free ad- and tracker-blocking resolver aimed at consumers who want pi-hole-style blocking without running their own server. 2602:fcbc::ad 6 Alternate DNS_IPv6 ads_trackers Filtered — ads/trackers Alternate DNS, IPv6 — same service as the IPv4 Alternate DNS row above. 2602:fcbc:2::ad 6 Alternate DNS_IPv6 ads_trackers Filtered — ads/trackers Alternate DNS, IPv6 — same service as the IPv4 Alternate DNS row above. 149.112.121.10 4 CIRA Canadian Shield unfiltered Unfiltered ("Private" tier — resolution only) private.canadianshield.cira.ca CIRA Canadian Shield, "Private" tier — free resolver from CIRA, Canada's .ca registry operator. This specific IP pair is the Private tier: DNS resolution only, NO malware/phishing filtering. CIRA's filtered Protected and Family tiers use different IPs (.121.20 / .121.30) not listed in this sheet. 149.112.122.10 4 CIRA Canadian Shield unfiltered Unfiltered ("Private" tier — resolution only) private.canadianshield.cira.ca CIRA Canadian Shield, "Private" tier — free resolver from CIRA, Canada's .ca registry operator. This specific IP pair is the Private tier: DNS resolution only, NO malware/phishing filtering. CIRA's filtered Protected and Family tiers use different IPs (.121.20 / .121.30) not listed in this sheet. 185.228.168.9 4 CleanBrowsing malware_phishing Filtered — malware/phishing/spam only security-filter.dns.cleanbrowsing.org CleanBrowsing Security Filter — free tier that blocks malware, phishing, and spam domains only (no adult-content or family filtering on this specific IP pair). 185.228.169.9 4 CleanBrowsing malware_phishing Filtered — malware/phishing/spam only security-filter.dns.cleanbrowsing.org CleanBrowsing Security Filter — free tier that blocks malware, phishing, and spam domains only (no adult-content or family filtering on this specific IP pair). 185.228.168.10 4 CleanBrowsing AntiAdult family Filtered — adult content, proxies, VPN-bypass domains adult-filter.dns.cleanbrowsing.org CleanBrowsing Adult Filter — blocks adult/pornographic content plus proxy and VPN-bypass domains; does not block general malware. 185.228.168.168 4 CleanBrowsing Family family Filtered — adult + mixed content + forced SafeSearch (strictest CleanBrowsing tier) family-filter.dns.cleanbrowsing.org CleanBrowsing Family Filter — CleanBrowsing's strictest free tier: adult content, mixed/unrated content, proxy and VPN-bypass domains, plus forced SafeSearch. 2a0d:2a00:1::2 6 CleanBrowsing_IPv6 malware_phishing Filtered — malware/phishing/spam only security-filter.dns.cleanbrowsing.org CleanBrowsing Security Filter, IPv6 — same service as the IPv4 CleanBrowsing row above. 2a0d:2a00:2::2 6 CleanBrowsing_IPv6 malware_phishing Filtered — malware/phishing/spam only security-filter.dns.cleanbrowsing.org CleanBrowsing Security Filter, IPv6 — same service as the IPv4 CleanBrowsing row above. 1.0.0.1 4 CloudFlare unfiltered Unfiltered cloudflare-dns.com Cloudflare Public DNS — privacy-focused resolver, logs discarded within 24h, no content filtering on this IP pair. 1.1.1.1 4 CloudFlare unfiltered Unfiltered cloudflare-dns.com Cloudflare Public DNS — privacy-focused resolver, logs discarded within 24h, no content filtering on this IP pair. 2606:4700:4700::1001 6 CloudFlare_IPv6 unfiltered Unfiltered cloudflare-dns.com Cloudflare Public DNS, IPv6 — same service as the IPv4 Cloudflare row above. 2606:4700:4700::1111 6 CloudFlare_IPv6 unfiltered Unfiltered cloudflare-dns.com Cloudflare Public DNS, IPv6 — same service as the IPv4 Cloudflare row above. 8.20.247.20 4 Comodo Secure DNS malware_phishing Filtered — malware/phishing Comodo Secure DNS — legacy free resolver from Comodo (the security/antivirus vendor); blocks known malware and phishing domains. 8.26.56.26 4 Comodo Secure DNS malware_phishing Filtered — malware/phishing Comodo Secure DNS — legacy free resolver from Comodo (the security/antivirus vendor); blocks known malware and phishing domains. 76.76.10.0 4 Control D unfiltered Unfiltered (this is the "p0" free/unfiltered profile) freedns.controld.com Control D, free "p0" profile — Control D's no-filtering free tier (they also sell filtered profiles at other IPs, not this pair). 76.76.2.0 4 Control D unfiltered Unfiltered (this is the "p0" free/unfiltered profile) freedns.controld.com Control D, free "p0" profile — Control D's no-filtering free tier (they also sell filtered profiles at other IPs, not this pair). 2606:1a40:: 6 Control D_IPv6 unfiltered Unfiltered (this is the "p0" free/unfiltered profile) freedns.controld.com Control D, free "p0" profile, IPv6 — same service as the IPv4 Control D row above. 2606:1a40:1:: 6 Control D_IPv6 unfiltered Unfiltered (this is the "p0" free/unfiltered profile) freedns.controld.com Control D, free "p0" profile, IPv6 — same service as the IPv4 Control D row above. 78.47.64.161 4 DNS for Family family Filtered — family/parental-control dns-doh.dnsforfamily.com DNS for Family — small independent free resolver aimed at family/parental-control filtering; supports DNSSEC. 94.130.180.225 4 DNS for Family family Filtered — family/parental-control dns-doh.dnsforfamily.com DNS for Family — small independent free resolver aimed at family/parental-control filtering; supports DNSSEC. 216.146.35.35 4 Dyn family Reportedly filtered by default in the original "Internet Guide" product (blocked malicious/adult sites unless disabled in account settings); current behavior unconfirmed given the service's legacy status. Dyn Internet Guide — legacy consumer resolver from Dyn (acquired by Oracle in 2016). Still answering queries under Oracle Cloud as of 2026, but effectively unmaintained as a consumer-facing product. 216.146.36.36 4 Dyn family Reportedly filtered by default in the original "Internet Guide" product (blocked malicious/adult sites unless disabled in account settings); current behavior unconfirmed given the service's legacy status. Dyn Internet Guide — legacy consumer resolver from Dyn (acquired by Oracle in 2016). Still answering queries under Oracle Cloud as of 2026, but effectively unmaintained as a consumer-facing product. 80.80.80.80 4 Freenom World unfiltered Unfiltered (as claimed by the operator) Freenom World — free "anonymous" resolver launched by Freenom, the free-domain registrar. CAUTION for a domain-research tool specifically: Freenom stopped issuing new domains in 2023 amid litigation (Meta v. Freenom) over trademark abuse and malicious-domain complaints tied to its free TLDs (.tk/.ml/.ga/.cf/.gq). Using their resolver to help judge domain availability is an odd fit for this project even setting reliability aside. 80.80.81.81 4 Freenom World unfiltered Unfiltered (as claimed by the operator) Freenom World — free "anonymous" resolver launched by Freenom, the free-domain registrar. CAUTION for a domain-research tool specifically: Freenom stopped issuing new domains in 2023 amid litigation (Meta v. Freenom) over trademark abuse and malicious-domain complaints tied to its free TLDs (.tk/.ml/.ga/.cf/.gq). Using their resolver to help judge domain availability is an odd fit for this project even setting reliability aside. 8.8.4.4 4 Google unfiltered Unfiltered dns.google Google Public DNS — global anycast resolver run by Google; DNSSEC-validating, logs discarded within 24–48h, no content filtering. 8.8.8.8 4 Google unfiltered Unfiltered dns.google Google Public DNS — global anycast resolver run by Google; DNSSEC-validating, logs discarded within 24–48h, no content filtering. 2001:4860:4860::8844 6 GoogleIPv6 unfiltered Unfiltered dns.google Google Public DNS, IPv6 — same service and same FQDN as the IPv4 pair above. 2001:4860:4860::8888 6 GoogleIPv6 unfiltered Unfiltered dns.google Google Public DNS, IPv6 — same service and same FQDN as the IPv4 pair above. 74.82.42.42 4 Hurricane Electric unfiltered Unfiltered ordns.he.net Hurricane Electric — free recursive resolver run by the Fremont, CA network/hosting provider, offered alongside their free authoritative DNS hosting product. 205.171.2.65 4 Level3 unfiltered Unfiltered (no known filtering, but also no official policy of any kind) Level 3 / CenturyLink / Lumen legacy resolver — never an officially documented public DNS product; historically left open on the network and used out of habit. Still answering as of 2026 but unsupported and undocumented — could disappear without notice. 205.171.3.65 4 Level3 unfiltered Unfiltered (no known filtering, but also no official policy of any kind) Level 3 / CenturyLink / Lumen legacy resolver — never an officially documented public DNS product; historically left open on the network and used out of habit. Still answering as of 2026 but unsupported and undocumented — could disappear without notice. 4.2.2.1 4 Level3 unfiltered Unfiltered (no known filtering, but also no official policy of any kind) Level 3 / CenturyLink / Lumen legacy resolver — never an officially documented public DNS product; historically left open on the network and used out of habit. Still answering as of 2026 but unsupported and undocumented — could disappear without notice. 4.2.2.2 4 Level3 unfiltered Unfiltered (no known filtering, but also no official policy of any kind) Level 3 / CenturyLink / Lumen legacy resolver — never an officially documented public DNS product; historically left open on the network and used out of habit. Still answering as of 2026 but unsupported and undocumented — could disappear without notice. 208.67.220.220 4 OpenDNS Home malware_phishing Filtered — phishing protection on by default; more filtering optional via account doh.opendns.com OpenDNS Home (Cisco) — free consumer resolver. Blocks known phishing domains by default; more filtering (malware, adult, custom categories) is opt-in via a free OpenDNS account linked to your IP. 208.67.222.222 4 OpenDNS Home malware_phishing Filtered — phishing protection on by default; more filtering optional via account doh.opendns.com OpenDNS Home (Cisco) — free consumer resolver. Blocks known phishing domains by default; more filtering (malware, adult, custom categories) is opt-in via a free OpenDNS account linked to your IP. 2620:119:35::35 6 OpenDNS Home_IPv6 malware_phishing Filtered — phishing protection on by default; more filtering optional via account doh.opendns.com OpenDNS Home, IPv6 — same service as the IPv4 OpenDNS Home row above. 2620:119:53::53 6 OpenDNS Home_IPv6 malware_phishing Filtered — phishing protection on by default; more filtering optional via account doh.opendns.com OpenDNS Home, IPv6 — same service as the IPv4 OpenDNS Home row above. 138.197.140.189 4 OpenNIC unfiltered Unfiltered by philosophy, but not centrally guaranteed (volunteer-run, no SLA) OpenNIC — volunteer-run, community-governed alternative DNS network built around censorship resistance. These two IPs are individual Tier-2 member servers; uptime and behavior vary by the volunteer operator, not centrally guaranteed. 168.235.111.72 4 OpenNIC unfiltered Unfiltered by philosophy, but not centrally guaranteed (volunteer-run, no SLA) OpenNIC — volunteer-run, community-governed alternative DNS network built around censorship resistance. These two IPs are individual Tier-2 member servers; uptime and behavior vary by the volunteer operator, not centrally guaranteed. 149.112.112.112 4 Quad9 malware_phishing Filtered — blocks malware/phishing domains dns.quad9.net Quad9 (filtered) — free malware/phishing-blocking resolver run by the Quad9 Foundation (Swiss nonprofit). This IP pair is the FILTERED endpoint, not Quad9's unfiltered one. 9.9.9.9 4 Quad9 malware_phishing Filtered — blocks malware/phishing domains dns.quad9.net Quad9 (filtered) — free malware/phishing-blocking resolver run by the Quad9 Foundation (Swiss nonprofit). This IP pair is the FILTERED endpoint, not Quad9's unfiltered one. 2620:fe::9 6 Quad9_IPv6 malware_phishing Filtered — blocks malware/phishing domains dns.quad9.net Quad9 (filtered), IPv6 — same service as the IPv4 Quad9 row above. 2620:fe::fe 6 Quad9_IPv6 malware_phishing Filtered — blocks malware/phishing domains dns.quad9.net Quad9 (filtered), IPv6 — same service as the IPv4 Quad9 row above. 77.88.8.1 4 Yandex DNS unfiltered Unfiltered ("Basic" tier) dns.yandex.net Yandex DNS, "Basic" tier — the Russian search-engine company's free resolver. This pair is the unfiltered Basic tier; Yandex also runs filtered "Safe" and "Family" tiers at different IPs, not listed here. 77.88.8.8 4 Yandex DNS unfiltered Unfiltered ("Basic" tier) dns.yandex.net Yandex DNS, "Basic" tier — the Russian search-engine company's free resolver. This pair is the unfiltered Basic tier; Yandex also runs filtered "Safe" and "Family" tiers at different IPs, not listed here.