Free Enterprise
Network Tools
Use our high-standard, reliable, and completely free calculation and validation tools developed to accelerate your daily IT operations.
Comprehensive DNS, MX & SPF Lookup
Analyze your domain's DNS health, MX (Email) servers, and SPF security records live in the background using an API.
DMARC Record Generator & Validator
Create and test your advanced DMARC policy (p, sp, rua, ruf) record that protects your domain reputation in accordance with RFC 7489 standards.
SPF Record Generator & Validator
Generate a flawless SPF (TXT) record with a 10 DNS lookup limit check and full compliance with RFC 7208 standards for email security.
Download & Upload Transfer Calculator
Calculate how long it will take to upload or download your files by entering the data size (GB/TB) and your internet speed.
Why Use Doz Technology Tools?
Fast and Accurate Results
Our calculation and validation engines work instantly without page reloads, with zero errors.
Compliance with Official Standards
Our tools are coded to engineering standards referencing IETF and RFC documents (e.g., RFC 7208 and RFC 7489).
Secure and No-Log
The data you enter into the tools (IP addresses, domains) is not logged or stored on our servers.
Contact Us for Enterprise Network Infrastructure and Security
Consult our expert team for large-scale data transfers, email security (SPF, DMARC, DKIM), and professional network topology installations.