2 articles covering dNS record counts, TTL ranges, field length limits, API rate limits, and the full list of TLDs available for registration and transfer on NameBright. The largest category in the Help Center.
DNS Record Limits
Maximum DNS record counts per zone, allowed TTL ranges, field length limits, and the constraints that apply to each record type in NameBright.
KB-2.1 · 1 min · Updated July 2026
Per-zone limits
Limit
Value
Total DNS records per domain
1,000
A records per hostname
50
MX records per domain
20
TXT record value length
4,096 characters
Minimum TTL
300 seconds (5 minutes)
Maximum TTL
86,400 seconds (24 hours)
TTL recommendations
Use case
Recommended TTL
Active nameservers
3,600 (1 hour)
Planning a change
300 (5 minutes) — lower this 24 hours before changing
Static infrastructure
86,400 (24 hours)
Record format requirements
A records
Must be a valid IPv4 address in dotted-decimal notation:
203.0.113.42
AAAA records
Must be a valid IPv6 address:
2001:db8:85a3::8a2e:370:7334
CNAME records
The target value must be a fully qualified domain name ending with a dot, or a bare hostname:
example.myshopify.com.
TXT records
Each TXT record can have multiple strings (quoted segments), but the total value length cannot exceed 4,096 characters. If your SPF or DKIM value is long, split it into multiple quoted strings: