# Services from network-calc.x402tookit.com on Zero

> network-calc.x402tookit.com serves 12 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/network-calc.x402tookit.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/network-calc.x402tookit.com/health.json

## Services

- [Network Calc CIDR Compare](https://www.zero.xyz/c/network-calc-cidr-compare-53f0c66b/llms.txt): $0.02/call via x402. Compares two IPv4 or IPv6 CIDR blocks to determine their relationship (equal, contains, contained, adjacent, or disjoint), finds their common supernet, and optionally tests whether a given IP address falls within either block.
- [Network Calc: IPv4 Subnet & VLSM Calculator](https://www.zero.xyz/c/network-calc-ipv4-subnet-vlsm-calculator-efd7dc1e/llms.txt): $0.02/call via x402. Splits an IPv4 network into equal subnets or allocates VLSM subnets from named host counts, returning ranges, netmasks, usable addresses, and leftover free blocks.
- [Network Calc IPv6 Prefix Calculator](https://www.zero.xyz/c/network-calc-ipv6-prefix-calculator-b71d06a8/llms.txt): $0.02/call via x402. Calculates first/last address, size, /64 count, nth subnet, address type, and reverse DNS zone for an IPv6 CIDR prefix.
- [Network Calc MTU/MSS Calculator](https://www.zero.xyz/c/network-calc-mtu-mss-calculator-7e3e14a9/llms.txt): $0.02/call via x402. Calculates TCP MSS from a given MTU for IPv4/IPv6, computes effective MTU through tunnels (PPPoE, GRE, VXLAN, WireGuard, etc.), and counts IPv4 fragments for a payload size.
- [Network Calc: IPv4 Netmask Converter](https://www.zero.xyz/c/network-calc-ipv4-netmask-converter-7f6b6031/llms.txt): $0.02/call via x402. Converts any IPv4 mask representation (prefix length, dotted netmask, wildcard, or hex) into all equivalent forms with host counts and validity flags.
- [Network Calc Propagation Delay Calculator](https://www.zero.xyz/c/network-calc-propagation-delay-calculator-02b83e90/llms.txt): $0.02/call via x402. Calculates one-way and round-trip propagation delay over fiber, copper, or radio for a given distance or pair of coordinates, plus optional serialization delay.
- [Network Calc TCP Throughput Calculator](https://www.zero.xyz/c/network-calc-tcp-throughput-calculator-cfdeab0e/llms.txt): $0.02/call via x402. Calculates TCP bandwidth-delay product, required window size and scale factor, and throughput limits from both window size and packet loss (Mathis equation)
- [Network Calc Transfer Time](https://www.zero.xyz/c/network-calc-transfer-time-dde6dcde/llms.txt): $0.02/call via x402. Calculates file transfer time given bandwidth and size, or solves for the missing variable (size or bandwidth) given the other two, with optional protocol overhead adjustment.
- [Network Calc: CIDR Aggregation](https://www.zero.xyz/c/network-calc-cidr-aggregation-8cb1832b/llms.txt): $0.02/call via x402. Aggregates a list of IPv4 or IPv6 CIDR blocks into the minimal set of non-overlapping, merged prefixes plus the covering supernet.
- [Network Calc VoIP Bandwidth Calculator](https://www.zero.xyz/c/network-calc-voip-bandwidth-calculator-9d336aee/llms.txt): $0.02/call via x402. Calculates IP and Ethernet-level bandwidth for a VoIP codec and packetization time, including per-call and aggregate figures for multiple simultaneous calls.
- [Network Calc: Ethernet Efficiency & Goodput Calculator](https://www.zero.xyz/c/network-calc-ethernet-efficiency-goodput-calculator-d3824891/llms.txt): $0.02/call via x402. Calculates Ethernet wire overhead, TCP/UDP goodput, and maximum packets per second at line rate for a given packet size and link speed.
- [Network Calc IP Format Converter](https://www.zero.xyz/c/network-calc-ip-format-converter-2408a7a6/llms.txt): $0.02/call via x402. Converts an IPv4 or IPv6 address between multiple notations: RFC 5952 compressed, expanded, integer, hex, binary, reverse DNS, and NAT64.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

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