{"slug":"emailauth-openverbs-com-v1-spf-check-06f52d","title":"Evaluate an SPF record against an IPv4/IPv6 address using only its literal ip4/i","host":"emailauth.openverbs.com","method":"POST","resource":"https://emailauth.openverbs.com/v1/spf-check","category":"other","description":"Evaluate an SPF record against an IPv4/IPv6 address using only its literal ip4/ip6/all mechanisms. DNS-dependent mechanisms (include, a, mx, exists, redirect) reached before a match yield an honest `indeterminate` result rather than a guess.","price_listed":0.004,"price_asked":0.004,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":449,"reported_calls_30d":3,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"ip":"example","record":"example"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"properties":{"ip":{"description":"IPv4 or IPv6 address of the sending host.","minLength":1,"type":"string"},"record":{"description":"SPF TXT record to evaluate.","type":"string"}},"required":["record","ip"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.004,"price_match":true,"latency_ms":449,"error":null}],"description_full":"Evaluate an SPF record against an IPv4/IPv6 address using only its literal ip4/ip6/all mechanisms. DNS-dependent mechanisms (include, a, mx, exists, redirect) reached before a match yield an honest `indeterminate` result rather than a guess.","last_updated":"2026-09-06T08:17:42.429Z","schemes":["exact"]}