Public DNS servers

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Google Public DNS

Global anycast, widely compatible

IPv4

8.8.8.8, 8.8.4.4

IPv6

2001:4860:4860::8888, 2001:4860:4860::8844

Docs https://developers.google.com/speed/public-dns

Cloudflare 1.1.1.1

Fast resolver, privacy focused

IPv4

1.1.1.1

IPv6

2606:4700:4700::1111

Docs https://developers.cloudflare.com/1.1.1.1/ip-addresses/

Cisco Umbrella / OpenDNS

Reliable, phishing protection

IPv4

208.67.222.222, 208.67.220.220

Docs https://umbrella.cisco.com/

Quad9

Blocks malicious domains

IPv4

9.9.9.9, 149.112.112.112

IPv6

2620:fe::fe, 2620:fe::9

Docs https://quad9.net/service/service-addresses-and-features/

AdGuard DNS

Blocks ads and trackers

IPv4

94.140.14.14, 94.140.15.15

IPv6

2a10:50c0::ad1:ff, 2a10:50c0::ad2:ff

Docs https://adguard-dns.io/en/public-dns.html

CleanBrowsing

Security filter, blocks malware

IPv4

185.228.168.9, 185.228.169.9

IPv6

2a0d:2a00:1::2, 2a0d:2a00:2::2

Docs https://cleanbrowsing.org/

Live IPv4

10,517

Live IPv6

169

Total Live

10,686

Last source update

10-01-2026 22:34:55 (GMT)

Last probe run

10-01-2026 21:46:24 (GMT)

Tip: click any IP’s “Copy” button, or open WHOIS from Tools.

Top resolvers for CR

Total records: 10,686

Public DNS resolver list
IP	Country	ASN	Org	Status	Last checked	Tools
`170.84.108.11`	CR	AS263248	GCI SERVICE PROVIDER S.A.	OK	09-01-2026 23:23:04 (GMT)	WHOIS
`177.93.1.250`	CR	AS52263	Telecable Economico S.A.	OK	09-01-2026 23:19:42 (GMT)	WHOIS
`138.94.56.4`	CR	AS263749	Junta Administrativa del Servicio Electrico Municipal de CartagoJASEC	OK	09-01-2026 23:24:04 (GMT)	WHOIS
`201.194.193.31`	CR	AS11830	Instituto Costarricense de Electricidad y Telecom.	OK	09-01-2026 23:24:44 (GMT)	WHOIS
`200.105.96.57`	CR	AS52263	Telecable Economico S.A.	OK	09-01-2026 23:24:48 (GMT)	WHOIS

Meaning of statuses

OK: answers typical queries, NXDOMAIN behaves normally
NX_HIJACK: NXDOMAIN test did not return NXDOMAIN
TIMEOUT: no response
BAD: unusual response