Packets, Protocols, and Conversions
Calculated locally
DNS Record Builder
Build and validate common DNS records including A, AAAA, CNAME, MX, TXT, PTR, and SRV.
Learn before you deploy
Reference PacketToolbox learning content related to this workflow.
Tool input
Use the fields below and run the calculation or generation locally.
Results
Review output and validation notes before production use.
How it works
Select type, fill host/value/TTL, and generate normalized DNS syntax.
All processing runs in-browser with no external API dependency.
Practical example
Example: app.example.com. 3600 IN A 192.0.2.10
Related tools
Use these together for complete design and troubleshooting workflows.
- IPv4 Subnet Calculator for subnet boundary and wildcard checks.
- VLSM Planner for hierarchical IPv4 allocation.
- Route Summarization Calculator for clean route advertisement planning.
- Cisco ACL Builder for policy-generation workflows.