Research Paper: Cache me if you can: Effects of DNS Time-to-Live
DNS depends on extensive caching for good performance, and every DNS zone owner must set Time-to-Live (TTL) values to control their DNS caching. In our paper Cache Me If You Can: Effects of DNS Time-to-Live' we study different aspects of caching and, thus, TTLs. This page shows the TTLs that .nl second level domain names have configured for different record types. You can find the full paper here.
TTLs of A records
Most common time-to-live (TTL) values of A records
TTLs of AAAA records
Most common time-to-live (TTL) values of AAAA records