Devion Tools

Developer utilities by Devion

Whois
DNS / Ping / Geo
Blacklist
Encode/Decode
Hashing
Network
Text Tools
Generators
SSL / Certs
Domain registration via WHOIS with RDAP fallback
DNS records, ping, OS fingerprint, geolocation, propagation, email auth
HTTP Probe
Headers, SSL/TLS, redirect chain, TTFB, HTTP/2+3, CDN, tech stack, favicon hash
Traceroute
Hop-by-hop network path (may take 15-30 seconds)
Port Scan
27 common ports — only run on domains you own or have permission to test
Check IP against 24 DNS-based blackhole lists

How to Get Delisted

Base64

URL Encode / Decode

HTML Entities

JWT Decoder

Hash Generator

Hash Identifier

Subnet Calculator

MAC Address Vendor Lookup

HTTP Status Code Reference

JSON Formatter / Validator

Regex Tester

Text Diff

UUID Generator

Password Generator

Unix Timestamp Converter

Timestamp to Date
Date to Timestamp
Current Unix time:

Cron Expression Parser

Format: minute hour day-of-month month day-of-week  |  * = any  |  */n = every n  |  1-5 = range  |  1,3,5 = list

CSR Decoder

SPF Record Generator

Include (mail providers)
Allow IPs (optional)
Allow MX?
Fail policy

DMARC Record Generator

Policy
Subdomain Policy
Aggregate reports (rua)
Forensic reports (ruf)
Add as TXT record for: _dmarc.yourdomain.com