{"provider":{"host":"ip.openverbs.com","name":"Subnet calculator","score":69.9,"live":true,"checkedAt":"2026-10-27T19:26:09.587Z","uptime72h":100,"lastCheck":{"httpStatus":402,"ms":590,"note":"valid x402 v2 terms"},"endpoints":4,"networks":["eip155:8453"],"cheapestUsd":"0.002","income7dUsd":"21.821","payers7d":28,"transfers7d":1470,"payoutAddressShared":true,"claimed":false,"page":"https://logicnodes.io/observatory/p/ip.openverbs.com"},"endpoints":[{"url":"https://ip.openverbs.com/v1/contains","method":"POST","priceMicroUsd":2000,"networks":["eip155:8453"],"description":"Test whether an IP address falls within a CIDR block. A well-formed address of a different family (or simply outside the block) returns contains=false — not an error."},{"url":"https://ip.openverbs.com/v1/expand","method":"POST","priceMicroUsd":2000,"networks":["eip155:8453"],"description":"Return both the fully-expanded (eight 4-hex groups) and canonical compressed (RFC 5952) forms of an address. IPv4 is returned unchanged in both fields."},{"url":"https://ip.openverbs.com/v1/parse","method":"POST","priceMicroUsd":2000,"networks":["eip155:8453"],"description":"Parse an IPv4 or IPv6 address and classify it — version, normalized form and RFC range (unicast, private, loopback, linkLocal, multicast, uniqueLocal, ipv4Mapped, …). Detects IPv4-mapped IPv6."},{"url":"https://ip.openverbs.com/v1/subnet","method":"POST","priceMicroUsd":2000,"networks":["eip155:8453"],"description":"Compute network details of a CIDR block — network & broadcast address, usable host range, total and usable address counts. Works for IPv4 and IPv6 (counts returned as strings for large IPv6 blocks). Honours RFC 3021 for /31."}]}