# Hurricane Electric DNS

- [HEDNS\_DYNAMIC\_ON](/language-reference/record-modifiers/service-provider-specific/hurricane-electric-dns/hedns_dynamic_on.md)
- [HEDNS\_DYNAMIC\_OFF](/language-reference/record-modifiers/service-provider-specific/hurricane-electric-dns/hedns_dynamic_off.md)
- [HEDNS\_DDNS\_KEY](/language-reference/record-modifiers/service-provider-specific/hurricane-electric-dns/hedns_ddns_key.md)