| Field | Description | Length (octets) |
|---|---|---|
| NAME | Name of the node to which this record pertains | Variable |
| TYPE | Type of RR in numeric form (e.g., 15 for MX RRs) | 2 |
| CLASS | Class code | 2 |
| TTL | Count of seconds that the RR stays valid (The maximum is 2−1, which is about 68 years) | 4 |
| RDLENGTH | Length of RDATA field (specified in octets) | 2 |
| RDATA | Additional RR-specific data | Variable, as per RDLENGTH |
Resource record (RR) fields
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