Which DNS Is Most Stable? Compilation of Top DNS in Vietnam 2026

While using the Internet, you may have encounteredslow loading website, unable to resolve domain name, intermittent access, or DNS errors appearingeven though the network connection is still working normally. One of the simple ways to improve this situation is to change the default DNS to a DNS server with better response speed and stability.

Currently, there are many options such asGoogle Public DNS, Cloudflare DNS, Quad9, OpenDNS, AdGuard DNSor ISPs' DNSViettel, VNPT, FPT. However,Which DNS is the most stable in Vietnam? Which DNS is suitable for web browsing, gaming, increasing security, or blocking ads?

In this article,VPTS will summarize theFast, reliable, and popular DNS in Vietnam in 2026, along with primary/secondary DNS addresses, advantages, and suitable use cases for easy selection. Note that no single DNS is always the fastest for all users, as actual performance also depends onISP, region, and routing line quality.

DNS stands forDomain Name System, can be understood as a system that translates domain names into IP addresses.

For example, users only need to remember a website's domain name, whereas computers must know the IP address of the server hosting that website. DNS resolves and returns the corresponding IP address.

A well-functioning DNS can help:

• Reduce domain resolution wait time.
• Minimize website inaccessibility errors caused by DNS.
• Enhance stability when using the Internet.
• Block certain malicious domains.
• Block ads and trackers depending on the provider.
• Supports encrypted DNS such as DNS-over-HTTPS and DNS-over-TLS.

DNS does not directly increase Internet bandwidth. Changing DNS primarily affects server address lookup times before a connection is established.

There is no single DNS that is always fastest across all connections. Actual speed depends on ISP, location, routing paths, device, and DNS status at the time of use.

Google Public DNS is one of the most popular public DNS systems. The service can be used on computers, phones, routers, VPS, and servers.

DNS Google IPv4

DNS chính: 8.8.8.8
DNS phụ:   8.8.4.4

DNS Google IPv6

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

Google Public DNS supports traditional DNS queries, DNS-over-HTTPS, and DNS-over-TLS. Google also uses Anycast routing to direct user requests to appropriate server locations across its infrastructure.

Google DNS is suitable for users needing an easy-to-use, stable DNS system compatible with various devices.

Cloudflare DNS uses an easy-to-remember address pair:1.1.1.1and1.0.0.1. The standard version does not filter content.

Cloudflare DNS IPv4

DNS chính: 1.1.1.1
DNS phụ:   1.0.0.1

Cloudflare DNS IPv6

2606:4700:4700::1111
2606:4700:4700::1001

Cloudflare DNS blocks malware

DNS chính: 1.1.1.2
DNS phụ:   1.0.0.2

Cloudflare DNS blocks malware and adult content

DNS chính: 1.1.1.3
DNS phụ:   1.0.0.3

Cloudflare confirms version1.1.1.1standard does not filter content, while Cloudflare Families addresses can filter malware, phishing, and adult content.

Cloudflare is suitable for regular Internet users, gaming, browsing websites, or using simple DNS on home routers.

OpenDNS is a long-standing DNS service and is currently part of the Cisco Umbrella ecosystem.

OpenDNS IPv4

DNS chính: 208.67.222.222
DNS phụ:   208.67.220.220

OpenDNS FamilyShield

DNS chính: 208.67.222.123
DNS phụ:   208.67.220.123

Cisco currently maintains OpenDNS public DNS addresses and supports IPv4, IPv6, DNS-over-HTTPS, and DNS-over-TLS.

Quad9 is a security-focused public DNS. The recommended configuration can block certain malicious domains and validate DNSSEC.

Quad9 IPv4

DNS chính: 9.9.9.9
DNS phụ:   149.112.112.112

Quad9 IPv6

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

AdGuard DNS is suitable for those wanting to block ads and trackers across multiple devices without installing dedicated extensions for each browser.

Default AdGuard DNS

DNS chính: 94.140.14.14
DNS phụ:   94.140.15.15

This configuration blocks ads and trackers.

AdGuard DNS Non-filtering

DNS chính: 94.140.14.140
DNS phụ:   94.140.14.141

AdGuard DNS for Family

DNS chính: 94.140.14.15
DNS phụ:   94.140.15.16

The family version blocks ads, trackers, adult content, and enables safe search when supported.

Comodo Secure DNS is an option aimed at enhancing protection while browsing the Internet.

DNS chính: 8.26.56.26
DNS phụ:   8.20.247.20

Comodo currently continues to publish the two addresses above for its public DNS service.

Besides international DNS, users can try DNS provided directly by their ISP. ISP DNS sometimes provides better response times for domestic services due to shorter network paths.

However, some ISP DNS addresses may only work well or only allow queries when the user is within that provider's own network.

The Singapore DNS pair commonly shared in DNS roundups is:

DNS chính: 165.21.83.88
DNS phụ:   165.21.100.88

This is a reference DNS set. Users should not assume that DNS located in Singapore will be faster than Google or Cloudflare DNS, as DNS requests also depend on the ISP's international routing.

No DNS is always "fastest" or "most stable" across all regions. Actual performance depends on the ISP being used, geographic location, routing paths, and distance from the device to the DNS server. You can choose based on your needs as follows:

• If prioritizing speed when browsing or gaming:TryCloudflare DNS (1.1.1.1and1.0.0.1). This is a popular choice, with good response times and an easy-to-remember address.
• If prioritizing stability and compatibility:Please selectGoogle Public DNS (8.8.8.8and8.8.4.4). Google DNS works well on most computers, phones, routers, VPS, and servers.
• If you want to block ads and trackers:UseAdGuard DNS (94.140.14.14and94.140.15.15). However, DNS cannot completely block all types of ads.
• If you want to protect children from inappropriate content:SelectableCloudflare Families (1.1.1.3and1.0.0.3)orOpenDNS FamilyShield (208.67.222.123and208.67.220.123).
• If concerned about malware, phishing, and dangerous websites:Please selectQuad9 (9.9.9.9and149.112.112.112)or Cloudflare Malware Blocking (1.1.1.2and1.0.0.2).
• If using FPT, VNPT, or Viettel Internet:You can try your ISP's own DNS first, then compare with Cloudflare and Google to find the best option for your current area.

VPTS is a digital infrastructure solution provider in Vietnam, serving deployment, operation, and data storage needs for individuals, developers, and enterprises. The service ecosystem includesVietnam VPS, International VPS, VPS Anti DDoS, Hosting cPanel, dedicated server, Rack rental, Proxy IPv4/IPv6, S3 MinIOandCloud Storage.

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No DNS is always the fastest and most stable for all users in Vietnam. Actual performance depends on your ISP, geographic location, device, and connection routing quality at any given time. Therefore, you should directly test different DNS providers to find the most suitable configuration.

VPTSrecommends that you only use DNS from reputable providers, configure primary and secondary DNS on the same system, and test resolution performance before applying long-term. Note that changing DNS can improve response times and resolve certain access errors, but does not directly increase bandwidth or completely eliminate connection latency.

Hopefully the list above helped answer your questionWhich DNS is the most stableand choose the right DNS set for your computer, phone, router, VPS, or server. Follow VPTS for more useful knowledge about VPS, Hosting, servers, networking, and system security.