specification: API Commons Lifecycle
specificationVersion: '0.1'
provider: CenturyLink (Lumen Technologies)
providerId: centurylink
generated: '2026-09-05'
method: probed
source: >-
  Live probes of every host in apis.yml plus the api.lumen.com gateway, 2026-09-05,
  and the Lumen legal index at https://www.lumen.com/en-us/about/legal.html
versioning:
  scheme: path-major
  detail: >-
    Major version in the URL path (/oauth/v1/, /oauth/v2/). Two major versions of the
    authorization surface are live simultaneously. No published support window, no
    end-of-life date, and no version-support matrix were found.
  current_versions:
    - surface: authorization
      versions: [v1, v2]
      evidence: https://api.lumen.com/oauth/v2/token
deprecation_policy:
  published: false
  sunset_header: unknown
  deprecation_header: unknown
  detail: >-
    No RFC 8594 Sunset or Deprecation header was observed on any anonymous response and
    no deprecation or API-retirement policy page was found in the Lumen legal index or
    the docs.lumen.com sitemap (982 URLs). No type: Deprecation pointer is emitted.
status_page:
  published: false
  detail: >-
    status.lumen.com and status.centurylink.com do not resolve in DNS. The former help
    path https://www.lumen.com/help/en-us/network-status.html now 302s to the
    docs.lumen.com root rather than a status surface. Network status for customers is a
    signed-in Lumen Connect function ("planned network maintenance" under
    https://docs.lumen.com/lumen-connect/support/), not a public status page. No
    type: StatusPage pointer is emitted.
  evidence:
    - url: https://status.lumen.com/
      status: 0
      note: DNS does not resolve
    - url: https://status.centurylink.com/
      status: 0
      note: DNS does not resolve
    - url: https://www.lumen.com/help/en-us/network-status.html
      status: 200
      note: redirects to https://docs.lumen.com/ - not a status page
change_log:
  published: false
  detail: No dated API changelog or release-notes feed was found on any Lumen host.
retired_surfaces:
  - name: Level 3 / Lumen OpenAPI Services developer portal
    host: developer.level3.com
    state: gone
    evidence: DNS does not resolve (probed 2026-09-05)
    note: >-
      This host backed the "Lumen OpenAPI Services (Level 3 legacy)" entry in apis.yml.
      Its pointers have been removed from the record.
  - name: CenturyLink blog
    host: blog.centurylink.com
    state: gone
    evidence: DNS does not resolve (probed 2026-09-05)
  - name: Lumen API Marketplace
    host: apimarketplace.lumen.com
    state: redirecting-with-expired-certificate
    evidence: >-
      301 to https://developer.lumen.com/ but the host presents a TLS certificate
      CN=developer.centurylink.com that expired 2026-01-15, so an ordinary browser or
      HTTP client refuses the connection before the redirect is followed. Probed
      2026-09-05.
  - name: Legacy CenturyLink developer portal
    host: developer.centurylink.com
    state: redirecting-with-expired-certificate
    evidence: >-
      302 to https://developer.lumen.com/apis behind the same expired certificate
      (expired 2026-01-15). Probed 2026-09-05.
  - name: CenturyLink developer test portal
    host: developer-test.centurylink.com
    state: unreachable
    evidence: TLS connection timed out after 25s (probed 2026-09-05)
  - name: Developer Center /apis index
    url: https://developer.lumen.com/apis
    state: gone
    evidence: >-
      302 to the Developer Center root. The route table in the shipped SPA bundle
      (main.DDKmTKrP.js) declares only /devcenter/{home,getting-started,support,overview}
      and /devcenter/docs/:category/:section?/:slug?, so every /apis/* and /faq and
      /library URL still indexed by search engines now resolves to the catch-all
      NotFoundPage.
sla:
  published: false
  detail: >-
    Service-level commitments are published per product as service guides and schedules
    under https://www.lumen.com/en-us/about/legal/ (for example the DDoS Mitigation
    Service Guide and the Security Log Monitoring SLA), not as an API availability SLA.
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com