{"slug":"netintel-dev-subnet-calc-d1ef9a","title":"Calculates IPv4/IPv6 subnet details from CIDR notation — network/broadcast, netm","host":"netintel.dev","method":"GET","resource":"https://netintel.dev/subnet/calc","category":"other","description":"Calculates IPv4/IPv6 subnet details from CIDR notation — network/broadcast, netmask, wildcard (Cisco ACL) mask, binary/hex masks, usable host range, RFC classification (private/loopback/multicast), supernet, and subnet-split counts. Pass comma-separated CIDRs to detect overlaps and classify each pai","price_listed":0.005,"price_asked":0.005,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":935,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"cidr":"10.0.1.0/24"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"cidr":{"description":"CIDR block, e.g. 10.0.1.0/24 or 2001:db8::/48 (IPv6). Comma-separate multiple CIDRs for overlap/containment analysis, e.g. 10.0.0.0/16,10.0.1.0/24","type":"string"}},"required":["cidr"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"binary_mask":{"type":"string"},"broadcast":{"type":"string"},"cidr":{"type":"string"},"first_usable":{"type":"string"},"hex_mask":{"type":"string"},"ip_version":{"type":"number"},"is_private":{"type":"boolean"},"last_usable":{"type":"string"},"netmask":{"type":"string"},"network":{"type":"string"},"prefix_length":{"type":"number"},"rfc_classification":{"type":"string"},"subnets":{"type":"array"},"supernet":{"type":"string"},"total_hosts":{"type":"number"},"usable_hosts":{"type":"number"},"wildcard":{"type":"string"}},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.005,"price_match":true,"latency_ms":935,"error":null}],"description_full":"Calculates IPv4/IPv6 subnet details from CIDR notation — network/broadcast, netmask, wildcard (Cisco ACL) mask, binary/hex masks, usable host range, RFC classification (private/loopback/multicast), supernet, and subnet-split counts. Pass comma-separated CIDRs to detect overlaps and classify each pair (subnet/supernet/partial overlap/disjoint); multi-CIDR responses return {subnets, overlaps}.","last_updated":"2026-09-04T08:43:36.504Z","schemes":["exact"]}