Free ISP Network Tools
Calculators built for network engineers and FTTH providers.
Plan your network with purpose-built tools for ISPs. Calculate SLA budgets, subnet allocations, incident recovery benchmarks, and optical link budgets. All free, no sign-up required.
What Are ISP Network Planning Tools?
ISP network planning tools are specialized calculators that help network engineers design, validate, and maintain fiber-to-the-home (FTTH) infrastructure. Unlike generic IT utilities, these tools address the specific challenges ISPs face: SLA compliance, IP address exhaustion, incident response benchmarking, and optical link budget verification.
- SLA compliance
- The SLA calculator converts uptime percentages into concrete downtime allowances and tracks error budget consumption, critical for ISPs contractually bound to availability targets.
- IPv4 address planning
- The subnet calculator handles CIDR notation with ISP use-case context, from /31 point-to-point links to /20 CGNAT pools.
- Incident response benchmarking
- The MTTR calculator benchmarks incident recovery times against DORA research tiers, helping NOC teams identify bottlenecks.
- Optical link budgets
- The PON power budget calculator verifies GPON and XGS-PON optical links against ITU-T standards, ensuring sufficient margin for long-term reliable operation.
SLA Uptime Calculator
Calculate allowed downtime for any SLA percentage, track error budget usage, and find the right SLA tier for your network.
Open calculatorSubnet Calculator
Calculate IPv4 subnets with CIDR notation, network and broadcast addresses, host ranges, and ISP-optimized subnet cheat sheet.
Open calculatorMTTR Calculator
Calculate Mean Time To Recovery from incident data, benchmark against industry reliability tiers, and track repair performance.
Open calculatorPON Power Budget Calculator
GPON and XGS-PON optical link budget calculator with splitter losses, fiber attenuation, SFP class selection, and margin verification.
Open calculatorMonitor Your Network in Real Time
These tools help you plan. NetSense NMS helps you execute, with 24/7 monitoring, 30-second polling, and smart alert correlation across your entire FTTH network.