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DNS

Service Overview

Our DNS management platform allows you to configure and manage domain zones and resource records via an intuitive dashboard or API.

Key Features:

  • Create & manage DNS zones for your domains
  • Add, edit, or delete resource records (A, AAAA, CNAME, MX, TXT, etc.)
  • Delegate domains to our nameservers
  • DNS requests stat with detailed analytics per zone and record type

Built on a globally distributed infrastructure, our service ensures high availability and fast propagation of DNS changes.

Core DNS Concepts

DNS Zone — a domain space where you manage records (e.g., example.com)

SOA (Start of Authority) — the primary DNS record containing critical zone metadata (e.g., admin email, refresh intervals)

Nameservers (NS) — servers that handle DNS queries for your domain. Default nameservers: ns1-c.trbcdn.net., ns2-c.trbcdn.net., ns3-c.trbcdn.net..

FQDN (Fully Qualified Domain Name) — a complete domain name, including hostname, domain, and optional root dot (e.g., www.example.com.)

Record Set — a group of records of the same type for a domain (e.g., multiple A records for sub.example.com)

TTL (Time To Live) — how long (in seconds) DNS resolvers cache records before refreshing.

* Low TTL (e.g., 300s) → Faster updates, more queries
* High TTL (e.g., 86400s) → Better caching, slower updates

Setting Up a DNS Zone

Step 1: Add a Zone

  1. Go to DNS Management in your dashboard
  2. Click "Add DNS-zone"
  3. Enter your domain (e.g., example.com)
  4. Click "Create"

Step 2: Configure Nameservers

After creation, assign these nameservers at your registrar: 

ns1-c.trbcdn.net.
ns2-c.trbcdn.net.
ns3-c.trbcdn.net.

Attention

Propagation may take up to 24 hours.

Managing DNS Records

Adding a Record

  1. Select your zone
  2. Click "Add a set of recordings"

  3. Configure:

    • Type (A, AAAA, CNAME, MX, TXT, etc.)
    • Name (e.g., www for www.example.com)
    • Value (IP, domain, or text)
    • TTL (default: 3600s)

    Common Record Types

    Type Purpose Example
    A IPv4 address 192.0.2.1
    AAAA IPv6 address 2001:db8::1
    CNAME Domain alias shop.example.com
    MX Mail server 10 mail.example.com
    TXT Verification/SPF/DKIM v=spf1 include:_spf.example.com ~all

  4. Click "Create"

Best Practices & Troubleshooting

  1. Verifying DNS Changes: 
    nslookup -type=A shop.example.com
nslookup -type=MX example.com
dig example.com SOA
  2. Propagation Times:
    • First setup: Up to 24 hours
    • Updates: Follows TTL (default: 1 hour)
  3. Clearing DNS Cache
    • Windows: ipconfig /flushdns
    • macOS/Linux: sudo dscacheutil -flushcache
  4. SOA Record Settings
Parameter Purpose Recommended Value
Refresh How often secondary nameservers check for updates 10800s (3h)
Retry Retry interval if update fails 3600s (1h)
Expire Time until zone becomes invalid 604800s (1 week)
Minimum Negative cache TTL 3600s (1h)

Tip

Lower TTL before major changes to speed up updates.

Need Help?

If DNS records aren’t working:

  • Wait up to 24 hours for propagation.
  • Double-check record values.
  • Contact support if issues persist.

For advanced users:

  • Use dig or nslookup for debugging.
  • Monitor changes with DNS propagation tools (e.g., DNS Checker)