All Records
Collects common DNS records in one check so you can quickly review a domain overall configuration.
Tăng Khương Duy
A small personal space, starting from the simplest things.
199 small tools are available, collected for quick use when needed.
Hello.
I am Tang Khuong Duy, currently working at FPT Telecom International.
I like starting from simple things, making them clearer, easier to use, and more useful in everyday work.
Featured tools.
A few selected tools you can open quickly when you need to look something up, check details, or handle data.
MX Lookup
Shows the mail servers receiving email for a domain and resolves each MX target IP for mail routing checks.
Email DNS Health Check
Reviews MX, SPF, DKIM, DMARC, MTA-STS, and TLS-RPT for a domain in one consolidated table.
IP Lookup
Looks up IP, ASN, ISP, organization, geolocation, timezone, and PTR for log and traffic source checks.
SSL Expiry Monitor
Checks SSL/TLS expiry for multiple domains or endpoints and highlights certificates nearing expiration.
Password Generator
Generates strong passwords in the browser with options for length, uppercase, lowercase, numbers, and symbols.
Work.
A few short notes about where I work and how I want to shape this personal space.
Current
FPT Telecom International
I am currently working at FPT Telecom International, in an environment that brings me closer to connectivity, Internet infrastructure, and real operational problems.
Personal website
duytk.net
I see duytk.net as a small corner to document my working journey, try ideas, and collect simple tools I find useful.
