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DNS Lookup Online

DNS Lookup Online-summary

The DNS record query tool provides DNS A-type, CNAME type, MX type and TXT type record query functions. Domain name system (English: domain name system, abbreviation: DNS) is a service of the Internet. As a distributed database that maps domain names and IP addresses to each other, it can make it easier for people to access the Internet. DNS uses TCP and UDP ports 53. At present, the length limit for each level of domain name is 63 characters, and the total length of domain name cannot exceed 253 characters.

DNS Lookup Online-instructions

DNS record query tool.

  1. Please select the DNS record type to query and enter the domain name to be queried.
  2. Record type:
    A:The domain name points to the IP address.
    CNAME:The domain name points to another domain name.
    MX:The domain name points to the mail server address.
    TXTText value, usually used as SPF record.
  3. The use frequency of this tool is limited. Please use it reasonably.

DNS over TLS

DNS over TLS (DoT) is a network security protocol for encrypting and wrapping Domain Name System (DNS) queries and answers via the Transport Layer Security (TLS) protocol. The goal of the method is to increase user privacy and security by preventing eavesdropping and manipulation of DNS data via man-in-the-middle attacks. While DNS-over-TLS is applicable to any DNS transaction, it was first standardized for use between stub or forwarding resolvers and recursive resolvers, in RFC 7858 in May of 2016. Subsequent IETF efforts specify the use of DoT between recursive and authoritative servers ("Authoritative DNS-over-TLS" or "ADoT") and a related implementation between authoritative servers (Zone Transfer-over-TLS or "xfr-over-TLS").

DNS over HTTPS

DNS over HTTPS (DoH) is a protocol for performing remote Domain Name System (DNS) resolution via the HTTPS protocol. A goal of the method is to increase user privacy and security by preventing eavesdropping and manipulation of DNS data by man-in-the-middle attacks by using the HTTPS protocol to encrypt the data between the DoH client and the DoH-based DNS resolver. By March 2018, Google and the Mozilla Foundation had started testing versions of DNS over HTTPS. In February 2020, Firefox switched to DNS over HTTPS by default for users in the United States. An alternative to DoH is the DNS over TLS (DoT) protocol, a similar standard for encrypting DNS queries, differing only in the methods used for encryption and delivery. On the basis of privacy and security, whether or not a superior protocol exists among the two is a matter of controversial debate, while others argue the merits of either depend on the specific use case.

Free and Public DNS Server List

Chinese Name English Name IP Address IPv6 Address Other(DOT/DOH) Recommended Use Region
阿里巴巴 AliDNS 223.5.5.5
223.6.6.6
2400:3200:0:0:0:0:0:1
2400:3200:baba:0:0:0:0:1
DOH:https://dns.alidns.com/dns-query
DOT:dns.alidns.com
China
114 DNS 114 DNS 114.114.114.114
114.114.115.115
China
百度 BaiduDNS 180.76.76.76 2400:da00:0:0:0:0:0:6666 China
DNSPod DNS DNSPod DNS 119.29.29.29 2402:4e00:0:0:0:0:0:0 DOH:https://doh.pub/dns-query
DOT:dot.pub
China
CNNIC SDNS CNNIC SDNS 1.2.4.8
210.2.4.8
China
Cloudflare DNS Cloudflare DNS 1.1.1.1
1.0.0.1
2606:4700:4700:0:0:0:0:64
2606:4700:4700:0:0:0:0:6400
Global
微软 Microsoft 4.2.2.1
4.2.2.2
Global
谷歌 Google DNS 8.8.8.8
8.8.4.4
2001:4860:4860:0:0:0:0:8888
2001:4860:4860:0:0:0:0:8844
DOH:https://dns.google/dns-query – RFC 8484 (GET and POST)
DOH:https://dns.google/resolve? – JSON API (GET)
DOT:dns.google
Global
IBM IBM Quad9 9.9.9.9
149.112.112.112
2620:fe:0:0:0:0:0:fe
2620:fe:0:0:0:0:0:9
Global
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