Network Engineer Pro Toolkit

Overview

An all-in-one professional suite engineered for network administrators, cloud architects, and CCNA/CCNP engineers. Calculate IPv4 & IPv6 subnets with an interactive 32-bit visualizer, generate zero-waste VLSM schemes, detect multi-VPC/VPN CIDR collision overlaps, resolve DNS records via encrypted DNS-over-HTTPS (DoH), and convert subnets to Cisco, MikroTik, iptables, and Fortinet ACL rules with 100% client-side privacy.

Key features

• •Interactive 32-bit IPv4 binary matrix visualizer with instant bit breakdown
• •Comprehensive Subnet & CIDR calculation (Network, Broadcast, Usable Range, Wildcard, Hex)
• •Automated VLSM Subnet Planner with optimal host allocation and CSV/Markdown export
• •Multi-VPC / VPN Subnet Overlap and Conflict Detector with collision boundary analysis
• •Ultra-fast encrypted DNS-over-HTTPS (DoH) lookup for A, AAAA, MX, TXT, CNAME, NS, SOA
• •Instant ACL & Firewall rule generator for Cisco IOS, ASA, MikroTik, iptables, UFW, Fortinet
• •Bandwidth, Latency & Data Transfer Time Calculator with Bandwidth-Delay Product (BDP)
• •100% Client-Side Privacy: Your internal IP topologies never leave your browser

How to use

1. 1
   Select your desired networking module from the top navigation tabs.
2. 2
   For Subnetting: Enter an IP address (e.g. 192.168.1.50) and select the CIDR prefix using the slider or dropdown.
3. 3
   For VLSM: Enter your root parent network and define host requirements per department to auto-pack subnets.
4. 4
   For Overlap Detection: Enter two or more CIDRs to scan for routing and VPC overlap conflicts.
5. 5
   For DNS Lookup: Type a domain or hostname to query global DoH records with response time metrics.
6. 6
   For ACL & Bandwidth: Copy generated firewall syntax or calculate data transfer durations.

Frequently asked questions