PortOne · Domain Security

Portone Domain Security

Domain security

Domain security posture for PortOne, probed live across 4 host(s) and 1 registrable domain(s). 4 host(s) serve HTTPS (up to TLSv1.3); 0 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=none).

PaymentsPayment OrchestrationFintechKoreaBillingIdentity Verification

Transport & Host Security

portone.io

HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 2 15:06:23 2026 GMT

api.portone.io

HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Nov 29 23:59:59 2026 GMT

developers.portone.io

HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 24 18:31:39 2026 GMT

api.iamport.kr

HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Jan 18 23:59:59 2027 GMT

Domain (DNS/Email) Security

portone.io

DNSSEC: no · SPF: yes · DMARC: yes (p=none) · CAA: none

Source

Domain Security

generated: '2026-07-17'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: portone.io
  https: true
  tls_version: TLSv1.3
  http_status: 308
  cert_expires: Oct  2 15:06:23 2026 GMT
  cert_issuer: (probed)
- host: api.portone.io
  https: true
  tls_version: TLSv1.3
  http_status: 404
  cert_expires: Nov 29 23:59:59 2026 GMT
  cert_issuer: 'C=US, O=Amazon, CN=Amazon RSA 2048 M04'
  notes: V2 API host; served behind AWS. Root path returns 404 (no unauthenticated index).
- host: developers.portone.io
  https: true
  tls_version: TLSv1.3
  http_status: 200
  cert_expires: Sep 24 18:31:39 2026 GMT
- host: api.iamport.kr
  https: true
  tls_version: TLSv1.3
  http_status: 301
  cert_expires: Jan 18 23:59:59 2027 GMT
  notes: Legacy V1 (Iamport) API host, still live.
domains:
- domain: portone.io
  dnssec: false
  caa: []
  spf: true
  spf_record: 'v=spf1 include:_spf.google.com include:mail.stibee.com include:_spf.salesforce.com include:_spf.getresponse.com include:243569856.spf05.hubspotemail.net ~all'
  dmarc: true
  dmarc_policy: none
  dmarc_rua: 'mailto:infra+dmarc@portone.io'
notes: >-
  All apis.yml and OpenAPI hosts serve over HTTPS with TLS 1.3. The V2 API host
  api.portone.io presents an Amazon-issued certificate (AWS-fronted). A
  .well-known/security.txt was not found on portone.io (HTTP 404) at probe time.
  DMARC is published with policy p=none (monitoring). No CAA records were returned
  for portone.io. The legacy api.iamport.kr host remains live for V1 integrations.

Work with this as data

Every security artifact here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for security posture

4 MCP tools reach this

find_securityBrowse and filter every security artifact in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This security artifact

curl "https://apis.io/api/v1/security/portone-domain-security"

All security posture

curl "https://apis.io/api/v1/security?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.