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stackexchange-dnscontrol/documentation/functions/record/TTL.md

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---
name: TTL
parameters:
- ttl
parameter_types:
ttl: Duration
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---
TTL sets the TTL for a single record only. This will take precedence
over the domain's [DefaultTTL](../domain/DefaultTTL.md) if supplied.
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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" %}
```javascript
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
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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
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);
```
{% endcode %}