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.
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. The SLA calculator converts uptime percentages into concrete downtime allowances and tracks error budget consumption — critical for ISPs contractually bound to availability targets. The subnet calculator handles IPv4 CIDR notation with ISP use-case context, from /31 point-to-point links to /20 CGNAT pools. The MTTR calculator benchmarks incident recovery times against DORA research tiers, helping NOC teams identify bottlenecks. The PON power budget calculator verifies GPON and XGS-PON optical links against ITU-T standards, ensuring sufficient margin for long-term reliable operation.
Calculate allowed downtime for any SLA percentage, track error budget usage, and find the right SLA tier for your network.
Open calculatorCalculate IPv4 subnets with CIDR notation, network and broadcast addresses, host ranges, and ISP-optimized subnet cheat sheet.
Open calculatorCalculate Mean Time To Recovery from incident data, benchmark against industry reliability tiers, and track repair performance.
Open calculatorGPON and XGS-PON optical link budget calculator with splitter losses, fiber attenuation, SFP class selection, and margin verification.
Open calculatorThese 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.
