{"uid":"cap_9k3wXP0ZEwWZtu9-1L5rd","slug":"is-port-389-open-718f3a47","name":"is-port-389-open","description":"Is TCP port 389 (LDAP) 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 LDAP without running a scanner. $0.01 per check.","url":"https://ip.intel.rallylive.ca/ip/port/389?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_mSrVLgQ-iUv1WeHBjM02I","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 389 (LDAP) is open, closed, or filtered on a given host by attempting a connection from Cloudflare's edge network","exampleAgentPrompt":"Can you check if TCP port 389 (LDAP) is open or exposed on the host ldap.example.com? I want to know if it's reachable from the public internet without running a scanner.","exampleUseCases":[{"title":"LDAP exposure audit before deployment","prompt":"Before we go live, can you check whether port 389 is open and publicly reachable on our directory server at 203.0.113.45? I need to know if LDAP is accidentally exposed to the internet."},{"title":"Security sweep of a suspected host","prompt":"I found an IP address 198.51.100.22 in our logs that looks suspicious — can you check if LDAP port 389 is open on it? I want to know the status and how fast it responded."},{"title":"Verifying firewall rule effectiveness","prompt":"We just updated our firewall rules to block port 389 on the host directory.corp.example.com — can you verify from the outside whether LDAP is now closed or filtered?"}],"resultDescription":"Returns whether TCP port 389 is open, closed, or filtered on the target host, along with the connection time. If the host is behind Cloudflare's edge network, the result is marked inconclusive since Cloudflare answers on behalf of the origin.","failureModes":["Cloudflare-fronted hosts return inconclusive result because Cloudflare's edge intercepts the connection","Invalid or unresolvable hostname returns an error","Filtered ports may be indistinguishable from slow connections depending on timeout behavior","Network issues at Cloudflare's edge may cause transient errors"],"whenToPreferThis":"Choose this endpoint when you need a quick, lightweight check of LDAP port 389 accessibility on a specific host without deploying a full port scanner. It's ideal for security audits, firewall validation, and infrastructure exposure checks. Note: if the target is Cloudflare-fronted, results will be inconclusive — use a different method for those hosts.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:50:32.858Z","isFirstParty":false,"canonicalSlug":"is-port-389-open-718f3a47"}