01 The "Phonebook" Analogy
Computers don't communicate using names like google.com. They use numbers called IP Addresses (like 142.250.190.46). DNS (Domain Name System) is the system that translates human-friendly names into computer-friendly numbers.
The Name
You type "lamanify.com"
The DNS (Phonebook)
Looks up the name.
The Number (IP)
Connects you to "76.76.21.21"
02 The 4 Records You Must Know
Your DNS settings are made up of different "records," each with a specific job. Here are the most common ones:
"Address"
Points a domain directly to an IP address.
"Alias"
Points one domain to another domain name.
"Mail Exchange"
Tells the internet where to deliver emails for your domain.
"Text"
Used for verification (proving you own the domain) and email security (SPF).
03 Why DNS Matters
Uptime & Availability
If your DNS records are wrong, your website effectively ceases to exist. Users will see a "This site can't be reached" error.
Email Delivery
Without correct MX and TXT (SPF/DKIM) records, your emails will likely bounce or go straight to the recipient's spam folder.
Verification
Services like Google Search Console and Facebook rely on DNS TXT records to prove you actually own your domain.
04 Common DNS Issues
DNS Propagation
When you change a record, it doesn't happen instantly for everyone. It needs to spread across the internet's thousands of servers. This can look like your site is "broken" for some people but working for others.
CNAME on Root Domain
A technical rule: You generally cannot put a CNAME record on your root domain (e.g., domain.com). It works on subdomains (e.g., www.domain.com or blog.domain.com), but the root usually needs an A Record or a special "Alias" record.
05 How to manage your records
You manage DNS records at your Domain Registrar (where you bought the domain) or your DNS Provider (like Cloudflare).
1. Log in to your provider
Go to Namecheap, GoDaddy, Cloudflare, or Route53.
2. Find "DNS Management"
Look for a section called "DNS," "Zone Editor," or "Name Server Management."
3. Add or Edit Records
Be careful! Only delete records if you know what they do. Adding a new record usually asks for:
- Type: A, CNAME, etc.
- Host/Name:
@for root,wwwfor subdomain. - Value/Target: The IP address or domain to point to.
- TTL: "Time To Live" (usually leave as automatic).
06 Frequently Asked Questions
How long does DNS take to update?
It can take anywhere from a few minutes to 48 hours for DNS changes to spread (propagate) across the internet, depending on your TTL (Time to Live) settings.
What is an A Record vs. CNAME?
An 'A Record' points a domain to a specific IP address (like 192.0.2.1). A 'CNAME' points a domain to another domain name (like www.google.com).
Why is my new website not showing up?
This is usually due to DNS propagation. Your computer might still be remembering (caching) the old location. Try clearing your browser cache or flushing your DNS.
Can I have multiple MX records?
Yes, and you usually should. Multiple MX records provide backups. If the first email server is down, the sender tries the next one with the higher priority number.