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Quad9 is a free service that replaces your default ISP or enterprise Domain Name Server (DNS) configuration. When your computer performs any Internet transaction that uses the DNS (and most transactions do), Quad9 blocks lookups of malicious host names from an up-to-the-minute list of threats.
- Service
Quad9 is a free, recursive, anycast DNS platform that...
- News
Quad9 is a global DNS service that offers enhanced...
- Support
Support. Check-out our set up guides and the FAQ, or use the...
- About
Security: Quad9 blocks against known malicious domains,...
- Addresses & Features
Quad9 has several different service offerings for recursive...
- Threat blocking
Threat Blocking. Quad9 has integrated both commercial and...
- Privacy
Quad9 is a nonprofit organization, with no commercial...
- Locations
Quad9 systems are distributed worldwide in more than 200...
- Service
13 maj 2020 · Na przykład Quad9 pobiera informacje o bezpieczeństwie od 19 partnerów, z których jednym jest X-Force firmy IBM, ale obejmuje także Abuse.ch, grupę roboczą ds. zwalczania phishingu, Bambenek Consulting, F-Secure, Netlab i Proofpoint.
Usługa DNS Quad9, poza standardowym działaniem, dodatkowo sprawdza domeny internetowe w bazie danych IBM X-Force pod kątem analizy zagrożeń i automatycznie blokuje domeny stron udostępniających złośliwe oprogramowanie. Serwer Quad9 dostępny jest pod adresami 9.9.9.9 oraz 2620:fe::fe.
Quad9's 9.9.9.11 service supports ECS. EDNS Client Subnet (ECS) allows Quad9 to send a portion of your IP address to authoritative name servers, which helps major content providers (CDNs), such as Google, Microsoft, etc, accurately determine your geolocation.
Quad9 operates recursive name servers for public use at the twelve IP addresses listed below. These addresses are routed to the nearest operational server using anycast routing. Quad9 supports DNS over TLS over port 853, [ 32 ] DNS over HTTPS over port 443, [ 33 ] and DNSCrypt over port 8443.
Quad9 is a Swiss-based, non-profit organization which operates a privacy-and-security focused, open DNS recursive service for the masses, which is used by an estimated tens of millions of devices worldwide, and is intended for everyone, from home users to large-scale enterprises.
Quad9 has several different service offerings for recursive DNS features. Each is represented by a different IP address which you use to configure your systems.
