Network engineering maths for agents: subnetting, IPv6 formats, CIDR aggregation, bandwidth, TCP windows, MTU and VoIP.
payments ON MAINNET (real money) · 12 live endpoints
| Endpoint | Price | What it answers |
|---|---|---|
GET /cidr-aggregate | $0.02 | Summarise IPv4 or IPv6 CIDR blocks into the minimal set (merging adjacent and overlapping blocks) plus the covering supernet. |
GET /cidr-compare | $0.02 | Compare two IPv4 or IPv6 CIDR blocks: equal, contains, contained, adjacent or disjoint, their common supernet, and test an IP. |
GET /cidr-ipv6 | $0.02 | IPv6 prefix calculator: first and last address, size, number of /64s, the nth subnet, address type and reverse DNS zone. |
GET /ethernet-efficiency | $0.02 | Ethernet wire overhead, TCP/UDP goodput and maximum packets per second at line rate for a packet size and link speed. |
GET /ip-format | $0.02 | Convert an IPv4 or IPv6 address between notations: RFC 5952 compressed, expanded, integer, hex, binary, reverse DNS, NAT64. |
GET /mtu-mss | $0.02 | TCP MSS from an MTU for IPv4 or IPv6, effective MTU through tunnels (PPPoE, GRE, VXLAN, WireGuard) and IPv4 fragment counts. |
GET /netmask-convert | $0.02 | Convert an IPv4 prefix length, netmask, wildcard or hex mask into every other form with host counts; flags bad masks. |
GET /propagation-delay | $0.02 | Propagation delay (one way and round trip) over fibre, copper or radio for a distance or two coordinates, plus serialization. |
GET /subnet-vlsm | $0.02 | Split an IPv4 network into equal subnets, or allocate VLSM subnets from host counts (largest first) with ranges and leftovers. |
GET /tcp-throughput | $0.02 | TCP bandwidth-delay product, window size and scale factor needed, throughput limits from window and from packet loss (Mathis). |
GET /transfer-time | $0.02 | Time to transfer a file at a bandwidth (with protocol overhead), or the bandwidth or data size implied by the other two. |
GET /voip-bandwidth | $0.02 | Bandwidth of a VoIP call (IP and Ethernet level) for a codec and packetization time, and totals for many calls. |
GET /catalog returns this list as JSON. Activity hub · uptime.
Results are computed locally from published networking standards and formulas, provided as is, with no warranty. Real throughput and latency depend on equipment, congestion and configuration. Not a substitute for a network design review. Every paid response carries a disclaimer field.