dnscontrol/documentation/functions/record/TTL.md

name	parameters	parameter_types
TTL	ttl	ttl Duration

TTL sets the TTL for a single record only. This will take precedence over the domain's DefaultTTL if supplied.

The value can be:

• An integer (number of seconds). Example: 600
• A string: Integer with single-letter unit: Example: 5m
• The unit denotes:
  • s (seconds)
  • m (minutes)
  • h (hours)
  • d (days)
  • w (weeks)
  • n (nonths) (30 days in a nonth)
  • y (years) (If you set a TTL to a year, we assume you also do crossword puzzles in pen. Show off!)
  • If no unit is specified, the default is seconds.
• We highly recommend using units instead of the number of seconds. Would your coworkers understand your intention better if you wrote 14400 or '4h'?

{% code title="dnsconfig.js" %}

D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  DefaultTTL(2000),
  A("@","1.2.3.4"), // uses default
  A("foo", "2.3.4.5", TTL(500)), // overrides default
  A("demo1", "3.4.5.11", TTL("5d")),  // 5 days
  A("demo2", "3.4.5.12", TTL("5w")),  // 5 weeks
);

{% endcode %}