How to operate domain name resolution query? Zero basic practical guide sharing

for newcomers to website construction or domain name management, the status of domain name resolution directly affects whether the website can be accessed normally, but many people do not know how to confirm whether the resolution is effective and the configuration is correct. Domain name resolution query is the key operation to solve such problems. It can help you quickly obtain the core information such as domain name resolution records, effective status, and server address. This article will teach you step by step to complete the domain name resolution query operation from a practical point of view, and will also share the skills of troubleshooting problems. Even if it is zero foundation, it can be easily started.

, why do domain name resolution query?

before understanding the operation steps, we must first understand the core role of domain name resolution query to avoid blind operation.

1, verify the parsing configuration is effective

when you set a new resolution record in the background of the domain name service provider, it will not take effect immediately on the whole network. Through the domain name resolution query, you can quickly confirm whether the record has been synchronized to the DNS server, and judge whether the website can be accessed normally. Avoid waiting for too long or configuration errors that cause users to fail to open the website.

2, troubleshooting website access failure

if the website is suddenly inaccessible, in addition to server failure, abnormal domain name resolution is also a common reason. Through domain name resolution query, you can check whether the current resolved server address is correct, whether there is a cache problem caused by the loss of resolution records and the expiration of TTL values, and quickly locate the root cause of the failure.

Second, through the domain name service provider background to do domain name resolution query

domain name service provider background is the most direct domain name resolution query channel, simple operation and accurate information.

1, login domain name management background

open the official website of the service provider you purchased the domain name, such as Alibaba Cloud, Tencent Cloud, Western Digital, etc. After logging in with the registered account, find the domain name management or domain name console entrance, enter and find the domain name you need to query, and click to enter the domain name management page.

2, find the analysis query entrance

in the domain name management page, find "Resolution Record" "DNS Resolution" or similar tabs, some service providers will also set a separate "domain name resolution query" button, click to see all the resolution records of the domain name, including record type, host record, record value, TTL value and effective status and other information.

3, export, or filter parse records

if there are many domain name resolution records, some service providers support filtering by record type, such as A records, CNAME records, MX records, etc., and can also export all resolution records as files for subsequent verification and backup to ensure the integrity of domain name resolution configuration.

3. Use third-party tools to do domain name resolution query

If you don't have Orthrus from a domain name service provider, or want to check the resolution status of different regions, you can use a third-party professional tool for domain name resolution query.

1, choose reliable third-party tools

common free tools include webmaster tools, love station network, DNS query network, etc. These tools do not need to register and log in, directly enter the domain name on the home page to query. In addition, some tools also support multi-node query, which can view the analysis results of different regions and different operators, suitable for troubleshooting regional access failures.

2, select the query type according to demand

After entering the domain name on the tool page, you can usually choose the record type of the query, such as the default A record (corresponding to the server Internet Protocol Address), CNAME record (domain name alias), MX record (mail resolution), etc. If you are not sure which type to query, you can select "All Records" to get all the resolution information at once.

3, interpret the query results

query results will display the type of resolution record, target address, TTL value, effective server and other information. You need to focus on whether the target address is consistent with your configuration. The smaller the TTL value, the faster the resolution will take effect. If the result shows "No record found", it means that the domain name has not configured the corresponding resolution record.

common problems and solutions of domain name resolution query

in the process of domain name resolution query, novice may encounter some common problems, master the solution can make the operation smoother.

1, the query results are inconsistent with the configuration

this happens mostly because the DNS cache is not updated. The TTL value is the cache time of the resolution record. Before the TTL expires, the local DNS server will keep the old resolution record. At this time, you can wait for the TTL to expire and query again, or you can speed up the update by refreshing the local DNS cache. The Windows system can enter ipconfig in the command prompt /flushdns execute.

2, display "Domain name does not exist resolution record"

If it is confirmed that the resolution record has been configured in the background of the service provider, but the domain name resolution query result shows no record, it may be that the host record filled in during the configuration is wrong, such as writing www as ww, or the resolution record is not submitted for review, some service providers The resolution record of the enterprise domain name needs to be manually reviewed before it will take effect. At this time, you can contact the service provider customer service to verify the status.

sum up, domain name resolution query is an indispensable operation in domain name management, from verifying the effective status of resolution to troubleshooting website failures, it can play an important role. This article comprehensively covers the content that zero-based users need to master from the necessity of query, the background operation of service providers, the use of third-party tools to troubleshooting. As long as you follow the steps, you can quickly complete the domain name resolution query, ensure that the domain name resolution status is normal, and provide protection for the stable operation of the website.