TTL stands for "Time To Live". This specifies how long caching nameservers will wait before refreshing the data for this dns record with the data here. The default value is 1800 (30 minutes), and can be set as low as 300 (5 minutes). Alternatively, advanced users can add an SOA record that specifies the default TTL for dns records.
6. Click the Add button to create your records.
**Please note there may be a 1-4 hour propagation time for the new records.