subnet-calculator

Live Production Tool
Launch Tool ↗

Subnet Calculator — Engineer-Grade Network Tool

$ backend: PHP / MySQL — live at subnet.abadawod.dev

A full-featured network subnetting platform built by a network engineer for network engineers. Every calculation runs on a real PHP/MySQL backend — no client-side math. Features include IPv4 subnetting with interactive bit map, VLSM designer, Cisco & FortiGate config generator, route summarizer, network audit, enterprise design, and topology planner — all in one terminal-style interface.

PHP Backend MySQL IPv4 Subnetting VLSM Cisco Config Generator FortiGate CLI Generator REST API Topology Planner
100%
Server-Side Math
/0 – /32
CIDR Support
Cisco & FG
CLI Config Export
AWS / Azure
Cloud Subnetting
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Platform Features
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IPv4 Subnet Calculator
Full subnet analysis with interactive bit map — Network, Broadcast, Wildcard, Usable hosts, IP class, and address type.
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VLSM Designer
Variable Length Subnet Masking — input host requirements, get optimally sized subnets with zero address waste.
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Config Generator
Generate ready-to-paste CLI configs for Cisco Router, Cisco Switch/VLAN, and FortiGate — including ACL, DHCP, OSPF.
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Cloud Subnet Support
AWS VPC and Azure VNet calculations — accounts for the 5 reserved addresses per subnet used by cloud providers.
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Topology Planner
Visual WAN topology generator — Hub & Spoke, Point-to-Point, Full Mesh, Partial Mesh with auto IP allocation.
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Network Audit
Paste an existing IP plan — detects overlaps, duplicates, and free gaps. Route summarizer condenses route tables.
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Platform Screenshots
Subnet Calculator — Main Interface
Main Interface — Terminal StyleInteractive bit map • Real-time subnet calculation • PHP/MySQL backend
Subnet Calculator Output — Full Results
Subnet OutputNetwork address, Broadcast, Wildcard mask, Usable hosts, IP class — all computed server-side
VLSM Designer
VLSM DesignerOptimally allocated subnets with zero address waste • Host requirements subnetting
Config Generator — Advanced Parameters
Config Generator — Advanced ParametersSecurity (ACL extended), Addressing (DHCP/NAT/PAT), Routing (OSPF/EIGRP), Redundancy (HSRP), Management (SSH/TACACS+), Monitoring (NTP/Syslog)
Topology Planner — Full Mesh
Topology Planner — Full MeshRiyadh HQ ↔ Dammam Branch ↔ Jeddah Branch • Auto /30 link allocation from 203.0.113.0/28
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Skills Demonstrated
PHP Backend Development MySQL Database Design IPv4 Subnetting Engine VLSM Algorithm Cisco Config Generation FortiGate CLI Generation REST API Design Network Topology Visualization Cloud Networking (AWS/Azure) Route Summarization Network Address Planning cPanel Deployment Subdomain Management
Enlarged Screenshot