{"uid":"cap_ERs8FsXDN5cr_WKpP-LSx","slug":"is-port-993-open-1a70f14e","name":"is-port-993-open","description":"Is TCP port 993 (IMAPS) 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 IMAPS without running a scanner. $0.01 per check.","url":"https://ip.intel.rallylive.ca/ip/port/993?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_N0V0XqgeS-JD65kd1S6g1","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 993 (IMAPS) is open, closed, or filtered on a given host by attempting a connection from Cloudflare's edge network.","exampleAgentPrompt":"Can you check if port 993 (IMAPS) is open on mail.example.com? I want to know whether secure IMAP is reachable from the internet without running a scanner.","exampleUseCases":[{"title":"Mail server IMAPS exposure audit","prompt":"Check whether port 993 is open on mail.mycompany.com — I need to confirm that IMAPS is actually reachable from outside before I tell clients to configure their email apps."},{"title":"Security check before firewall change","prompt":"Before I open port 993 in the firewall, can you verify whether it's currently showing as open, closed, or filtered on 198.51.100.42? I want to make sure the change takes effect."},{"title":"Monitoring IMAPS availability after outage","prompt":"Our IMAP over SSL service may have gone down — can you check if port 993 is responding on mail.acmecorp.net and tell me how long the connection attempt took?"}],"resultDescription":"Returns whether TCP port 993 is open, closed, or filtered on the target host, along with the connection time in milliseconds. If the host is Cloudflare-fronted, the result is marked inconclusive because Cloudflare's edge answers on behalf of the origin.","failureModes":["Cloudflare-fronted hosts return inconclusive — the edge answers the TCP handshake regardless of origin state","Filtered ports (firewall drop) may time out and return 'filtered' rather than definitive open/closed","Hosts with very high latency may appear filtered due to timeout thresholds","Invalid or unresolvable hostnames will return an error rather than a port status"],"whenToPreferThis":"Use this endpoint when you need a quick, external-perspective check of IMAPS (port 993) reachability without deploying your own scanner or running nmap. It is ideal for verifying email server exposure, confirming firewall rules took effect, or monitoring IMAPS availability from a neutral vantage point. Not suitable for Cloudflare-proxied hosts where the result will be inconclusive.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:49:44.671Z","isFirstParty":false,"canonicalSlug":"is-port-993-open-1a70f14e"}