{"uid":"cap_Pnl32UN7Pu1c7yYDJmYbw","slug":"ip-listed-on-uribl-black-eb288892","name":"IP Listed on URIBL Black","description":"Is this IPv4 address listed on uribl black (black.uribl.com)? Performs the DNSBL query (reversed octets under black.uribl.com, 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. $0.01 per lookup.","url":"https://ip.intel.rallylive.ca/ip/blacklist/uribl-black?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_LWtqAfe-f2oAr92ESY3MA","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 an IPv4 address is listed on the URIBL Black DNS blocklist (black.uribl.com) and returns the listing status, return codes, and reason text.","exampleAgentPrompt":"Can you check if the IP address 203.0.113.42 is listed on the URIBL Black blocklist and tell me the return code and reason if it is?","exampleUseCases":[{"title":"Email deliverability pre-send check","prompt":"Before I send out our marketing campaign, check if our mail server IP 198.51.100.10 is listed on URIBL Black so I know if we might hit spam filters."},{"title":"Inbound sender reputation screening","prompt":"I'm getting suspicious emails from 203.0.113.77 — can you check if that IP is flagged on the URIBL Black blocklist and give me the reason code?"},{"title":"Hosting provider abuse investigation","prompt":"We've got a customer complaint about IP 192.0.2.55 being used for spam — can you look it up on URIBL Black and tell me if it's listed and why?"}],"resultDescription":"Returns a yes/no listing status indicating whether the IPv4 address is on URIBL Black, along with the DNS return codes from the DNSBL query and, where available, the human-readable reason text published by the list.","failureModes":["Invalid or malformed IPv4 address returns an error","DNS resolution failure via Cloudflare DoH results in an error response","IP not listed returns listed=false with no reason text","Transient network issues may cause lookup timeouts"],"whenToPreferThis":"Choose this endpoint when you need a definitive, single-list check specifically against URIBL Black (black.uribl.com) — the authoritative URI-based spam blacklist. Prefer this over generic multi-list reputation services when you need the exact URIBL return code and reason text for compliance, logging, or automated triage purposes. Best suited for email deliverability checks, inbound mail screening, or abuse investigations where URIBL Black is the specific list of concern.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:48:22.230Z","isFirstParty":false,"canonicalSlug":"ip-listed-on-uribl-black-eb288892"}