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is-port-110-open
x402
is-port-110-open is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Checks whether TCP port 110 (POP3) is open, closed, or filtered on a given host by attempting a connection from Cloudflare's edge network.
Price / call$0.01
Success—
StatusUnknown
How this service works
Is TCP port 110 (POP3) 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 POP3 without running a scanner. $0.01 per check.
Output
Returns the status of TCP port 110 on the target host: open, closed, or filtered, along with the connection time in milliseconds. If the host is Cloudflare-fronted, the result is marked inconclusive because Cloudflare's edge intercepts the connection.
Example use cases
Mail server POP3 exposure audit
“Check if port 110 is open on mail.mycompany.com — I need to know if POP3 is publicly exposed on our mail server.”
Security hardening verification
“After I updated the firewall rules, can you verify that TCP port 110 is now closed on 203.0.113.45? I want to confirm POP3 is no longer reachable.”
Third-party mail host check
“Is POP3 accessible on the mail server at smtp.vendorhost.net? Check if port 110 is open so I know whether they support POP3 connections.”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/ip/port/110?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, no-scanner check of POP3 (port 110) exposure on a specific host or IP from an external Cloudflare edge vantage point. Prefer it over general port scanners when you want a quick, pay-per-use, agent-friendly check without standing up infrastructure. Note that Cloudflare-fronted hosts will yield inconclusive results.
Side effects
- Cloudflare-fronted hosts return inconclusive rather than true host status
- Invalid or unresolvable hostname returns an error
- Network timeouts may cause port to be reported as filtered rather than closed
- Rate limiting if many checks are made rapidly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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