{"uid":"cap_Ly2J5ayLu3Tq_LMaK_3vC","slug":"ip-listed-on-sorbs-spam-dnsbl-c7a6b427","name":"IP Listed on SORBS Spam DNSBL","description":"Is this IPv4 address listed on sorbs spam (spam.dnsbl.sorbs.net)? Performs the DNSBL query (reversed octets under spam.dnsbl.sorbs.net, via Cloudflare DoH) and returns listed yes/no with the return codes and, where the list publishes one, the reason text. One list, one precise answer. $0.01 per lookup.","url":"https://ip.intel.rallylive.ca/ip/blacklist/sorbs-spam?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LX1zIjD2WOR_GzuEF31OE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a given IPv4 address is listed on the SORBS spam blacklist (spam.dnsbl.sorbs.net) via DNS-based blocklist (DNSBL) lookup using Cloudflare DoH.","exampleAgentPrompt":"Can you check if the IP address 203.0.113.42 is listed on the SORBS spam blacklist and tell me the return code and any reason text?","exampleUseCases":[{"title":"Email sender IP reputation check","prompt":"Before I accept this inbound email, can you check if the sending IP 198.51.100.77 is listed on the SORBS spam DNSBL and tell me if it's flagged and why?"},{"title":"Firewall allowlist vetting","prompt":"I'm about to whitelist IP 203.0.113.15 in our mail server — can you quickly check if it's on the SORBS spam blacklist first so I know if that's a bad idea?"},{"title":"Spam complaint investigation","prompt":"A user reported getting spam from 185.220.101.34 — can you look it up on the SORBS spam list and tell me whether it's already listed there and what the reason says?"}],"resultDescription":"Returns a yes/no indicating whether the IPv4 address is listed on the SORBS spam DNSBL (spam.dnsbl.sorbs.net), along with the raw DNSBL return codes and, when the list provides it, a human-readable reason text explaining the listing.","failureModes":["Invalid or non-routable IPv4 address returns an error or not-listed result","Cloudflare DoH upstream timeout causes lookup failure","IPv6 addresses not supported — endpoint is IPv4-only","IP not listed returns a clean negative result with no reason text","Payment failure (x402) blocks the request before lookup occurs"],"whenToPreferThis":"Choose this endpoint when you need a fast, single-list, authoritative answer about whether a specific IPv4 address is on the SORBS spam blacklist specifically. Prefer it over multi-list aggregators when you want deterministic, traceable results from one source with return codes and reason text, especially in automated email filtering pipelines, abuse investigation workflows, or reputation scoring systems that need SORBS spam data specifically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:43:12.098Z","isFirstParty":false,"canonicalSlug":"ip-listed-on-sorbs-spam-dnsbl-c7a6b427"}