{"uid":"cap_7lJdAr1zGi6aIPrsIrzox","slug":"dnsbl-ip-reputation-lookup-6441be26","name":"DNSBL IP Reputation Lookup","description":"Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.","url":"https://anibalb.duckdns.org/x402/dnsbl-ip-reputation?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ip":"2.0.0.127","zones":[{"code":null,"zone":"zen.spamhaus.org","listed":false}],"listed_zones":["barracuda"]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fJdE9H3u0zsaYksGcQaXx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks an IP address against multiple DNS-based blocklists (DNSBLs) to determine its spam/abuse reputation and which blocklists it appears on.","exampleAgentPrompt":"Can you check whether the IP address 192.168.1.100 is listed on any DNS-based spam blocklists like Spamhaus or Barracuda?","exampleUseCases":[{"title":"Email deliverability pre-flight check","prompt":"Before I send out this email campaign, can you check if our mail server IP 203.0.113.45 is on any DNSBL blacklists that might cause our messages to be blocked?"},{"title":"Investigating suspicious inbound traffic","prompt":"We're getting a lot of suspicious requests from IP 91.108.4.10 — can you check its reputation and tell me if it's listed on any spam or abuse blocklists?"},{"title":"Postmaster blocklist audit","prompt":"I need to audit our IP 198.51.100.22 and find out exactly which DNS blocklist zones it's currently listed in, especially Spamhaus and Barracuda."}],"resultDescription":"Returns a JSON object containing the queried IP address, an array of DNSBL zones checked (each with zone name, listing status, and result code), and a summary list of zone names where the IP is actively listed.","failureModes":["Invalid or malformed IP address returns an error response","IP not found in any zone returns empty listed_zones array","Unreachable DNSBL zone may show null code with unlisted status","Payment failure (402) if USDC balance insufficient on Base","Rate limiting or timeout if upstream DNSBL resolvers are slow"],"whenToPreferThis":"Use this endpoint when you need a quick, multi-zone DNSBL reputation check for a specific IP address — especially for email deliverability audits, spam source investigation, or network security workflows. It covers multiple major blocklist zones (including Spamhaus and Barracuda) in a single call and requires no API key, making it ideal for pay-per-use agent workflows where you only pay $0.002 USDC per lookup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:41:14.152Z","isFirstParty":false,"canonicalSlug":"dnsbl-ip-reputation-lookup-6441be26"}