Does the change in the DNS level affect natural referencing? Social media marketing services

1. Edit a DNS record, pay attention to TTL

The redirection of a domain name to the corresponding web server often involves the creation of a type a record (IPv4 address). Record A will then direct traffic to the IP address of the destination web server. Changing this record may cause performance issues. Social media Marketing Services wants to guide the peoples

Indeed, to optimize the response time, the DNS system allows the caching of information with resolving DNS servers for a given duration, the duration of the TTL (Time to live) defined by the technical manager of the domain name, when of the configuration of it. The usual TTL, as recommended by the ANSSI, is several hours for conventional uses of domain names (websites). In the case of a modification of a record A, it could thus be taken into account only at the end of the TTL. Users could therefore access the old recording configurations for a few minutes or even hours after the changes.

It is therefore important to reduce the TTLs, if only temporarily during these modifications.

But does this affect SEO? Yes and no. In the case of users sent to a destination that no longer exists, Google will consider this as a 404 error. Beyond the negative user experience, it is not directly a SEO factor. Be careful, however, of the presence of backlinks and too many 404 errors. A low TTL thus makes it possible to limit the impact during these modifications.

2. Change DNS declared for a domain name

A domain name is associated with name servers (NS / Name Servers) that allow good DNS resolution. The DNS service comes to find information on these NS. These NSs can be changed when changing the domain name manager provider, or simply to switch from one DNS infrastructure to another. Will the name server change affect SEO?

Depending on the supplier and the chosen infrastructure, the resolution times may be shorter or shorter with a potential impact of improvement or decrease compared to the SERP (Search Engine Result Page). Indeed, the resolution time is taken into account by Google (see below).

And as for a record change, it is advisable to reduce the life of the records before modifying the name servers, so that the resolving DNS does not cache the old information.

3. DNS risk when migrating a site

This is the same principle discussed earlier. Changes to DNS configurations do not directly affect SEO, but they may result in a bad user experience. It should also play on TTL.

What are the scenarios to consider?

Change web hosting provider

Change DNS hosting provider

Moving traffic from www. to a "bare domain" (without the www.)

Moving your domain to a CDN (Content Delivery Network)

4. Changing the destination IP address

No. When editing a record pointing from one endpoint to another, the referencing is not impacted. The only (very rare) exception to this rule would be to point a domain to an endpoint that has already been identified as a junk mail server (such as the IP address of a shared server).

Be careful however to the IP address in question, one of (many) Google listing rules is that an IP address used by a website should be close to the end user.

5. Establishment of DNSSEC

DNSSEC allows to authenticate the DNS resolution via a chain of trust between the different DNS servers of this resolution. As for the HTTPS, it is an additional layer of security to put in place. As for the HTTPS, the loading time of the pages is impacted and therefore potentially the associated SEO. However, we must put things in perspective, DNSSEC is essential to the safety of browsing Internet users and it is better to put in place. Most companies offering security audits around domain names consider DNSSEC as necessary, and therefore as a rating criterion. Click on Social media Marketing Services

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