{"uid":"cap_2qW0YXvmxrTKPE1tCqjQb","slug":"is-port-631-open-344877e4","name":"is-port-631-open","description":"Is TCP port 631 (IPP) open on a host? Attempts a connection from Cloudflare's edge and reports open/closed/filtered with the connect time; Cloudflare-fronted hosts are reported as inconclusive because their edge answers for them. Exposure checks for IPP without running a scanner. $0.01 per check.","url":"https://ip.intel.rallylive.ca/ip/port/631?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_OqFz2Awq6P5NLFY7rI8FH","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 TCP port 631 (IPP - Internet Printing Protocol) is open, closed, or filtered on a given host by attempting a connection from Cloudflare's edge network.","exampleAgentPrompt":"Can you check whether TCP port 631 (IPP) is open or closed on the host printserver.mycompany.com, using an external probe so I don't have to run a scanner?","exampleUseCases":[{"title":"IPP exposure audit for print server","prompt":"I want to know if port 631 is publicly reachable on my print server at 203.0.113.45 — check from outside my network and tell me if it's open, closed, or filtered."},{"title":"Security hardening verification","prompt":"After I updated the firewall rules to block IPP, can you verify that port 631 is now closed on office-printer.acme.org from an external perspective?"},{"title":"Remote printer troubleshooting","prompt":"Users can't print remotely to cups.workshop.io — can you check if TCP port 631 is actually open and reachable from the outside, and how long the connection takes?"}],"resultDescription":"Returns whether TCP port 631 is open, closed, or filtered on the target host as observed from Cloudflare's edge network, along with the TCP connect time. If the host is Cloudflare-fronted, the result is marked as inconclusive because Cloudflare's edge intercepts the connection on behalf of the origin.","failureModes":["Cloudflare-fronted hosts return inconclusive result because the edge answers for the origin","Host does not exist or DNS resolution fails — likely returns an error","Firewall silently drops packets — reported as filtered rather than closed","Timeout if the host is extremely slow to respond","Network-level blocking between Cloudflare edge and target may produce filtered instead of closed"],"whenToPreferThis":"Use this endpoint when you need a quick, lightweight external check of whether port 631 (IPP) is exposed on a host without deploying your own scanner or network agent. Ideal for security audits, hardening verification, and exposure checks from an external vantage point. Note that results for Cloudflare-fronted hosts will be inconclusive — in those cases a direct scan from a different vantage point would be needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:47.553Z","isFirstParty":false,"canonicalSlug":"is-port-631-open-344877e4"}