Changing nameservers moves DNS management for a domain from one system to another. That can be useful during a website move, DNS service change, or hosting setup, but it can also interrupt your website, email, SSL, subdomains, and connected tools if records are missing.
The safest method is to prepare the new DNS zone before switching nameservers.
Before You Change Nameservers
Start by documenting the current setup.
Copy:
- Current nameservers
- A records
- CNAME records
- MX records
- TXT records
- SPF records
- DKIM records
- DMARC records
- Subdomain records
- Verification records
- Redirect records, if shown
Take screenshots or export records if your DNS provider allows it.
Identify What Must Keep Working
Make a list of services tied to the domain:
- Website
- Business email
www- Subdomains
- SSL
- Website builder
- Email marketing
- Analytics or tracking tools
- Search verification
- Booking or ecommerce tools
If you do not know what a record does, do not delete it casually. It may support a service your business uses.
Build the New DNS Zone First
Before changing nameservers, add the required records to the new DNS management area.
At minimum, this often includes:
- A record for the root domain
- CNAME record for
www - MX records for email
- TXT records for email authentication and verification
- Any needed subdomain records
If your domain will use Tech Help Canada Hosting DNS, start from the Tech Help Canada Hosting account area and open the domain or DNS settings. If the domain uses another DNS provider, prepare the records there.
Confirm the New Nameservers
Nameservers must be entered exactly. Extra spaces, misspellings, or missing nameserver entries can cause problems.
Use the nameservers provided by the DNS or hosting service that will manage the domain. Do not reuse old nameservers unless they are still the intended DNS location.
Make the Change at the Domain Registrar
Nameservers are usually changed where the domain is registered.
If the domain is registered through Tech Help Canada Hosting, go to the Tech Help Canada Hosting portal and open the domain’s nameserver settings.
If the domain is registered somewhere else, sign in to that registrar and update the nameservers there.
After saving, allow time for the change to update across networks.
Test During Propagation
After the change, test more than the homepage.
Check:
- Root domain
www- Contact form
- Business email sending
- Business email receiving
- SSL
- Important subdomains
- Key pages
Some networks may use the old nameservers for a while, while others use the new ones. Mixed results are common during propagation.
If Something Breaks
Compare the old DNS records to the new DNS records.
Common missing records include:
- MX records for email
- TXT records for SPF, DKIM, or DMARC
- CNAME record for
www - A record for the root domain
- Verification records for connected tools
- Subdomains used by apps or landing pages
If the issue affects email, check MX and email authentication records first. If the issue affects www, check the CNAME or redirect setup. If the root domain fails, check the A record.
Avoid These Mistakes
Do not change nameservers without a copy of the current DNS records.
Do not assume the new DNS zone already contains your email records.
Do not change nameservers and redesign the website at the same time unless you have a rollout plan.
Do not delete the old DNS records until the new setup is working and documented.
Do not test only from one device or browser.
After the Change Is Stable
Once the domain, www, email, SSL, and subdomains all work, update your internal website record.
Include:
- New nameservers
- DNS provider
- Date changed
- Website destination
- Email provider
- Person who made the change
If you want the domain registration itself managed alongside your hosting, you can explore domain transfer through Tech Help Canada Hosting.
I can suggest related Tech Help Canada articles based on the topic you’re reading now.
We empower people to succeed through practical business information and essential services. If you’re looking for help with SEO, copywriting, or getting your online presence set up properly, you’re in the right place. If this piece helped, feel free to share it with someone who’d get value from it. Do you need help with something? Contact Us
Want a heads-up once a week whenever a new article drops?
