generated: '2026-07-26'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
note: >-
  The website/portal hosts were probed mechanically by 0-working/probe-domain-security.py; the
  four API/auth hosts and the two Zoopla domains below were probed by hand in the same round
  because they are declared only in OpenAPI servers[] and docs prose. Finding of record: not one
  API host in this estate sets HSTS, and both Alto API hosts still negotiate TLSv1.2 while every
  Zoopla host negotiates TLSv1.3.
hosts:
- host: api.alto.zoopla.co.uk
  role: Alto API production (OpenAPI servers[])
  https: true
  tls_version: TLSv1.2
  cert_expires: Oct  6 23:59:59 2026 GMT
  hsts: false
- host: api.alto.zoopladev.co.uk
  role: Alto API sandbox (OpenAPI servers[], documented token endpoint)
  https: true
  tls_version: TLSv1.2
  cert_expires: Jan 16 23:59:59 2027 GMT
  hsts: false
- host: services.zoopla.co.uk
  role: Zoopla product API host
  https: true
  tls_version: TLSv1.3
  cert_expires: Nov 14 23:59:59 2026 GMT
  hsts: false
- host: services-auth.services.zoopla.co.uk
  role: Zoopla OAuth2 authorization server
  https: true
  tls_version: TLSv1.3
  cert_expires: Nov 18 23:59:59 2026 GMT
  hsts: false
- host: id.vebraalto.com
  role: Alto Connect identity provider (Auth0)
  https: true
  tls_version: TLSv1.3
  hsts: false
- host: www.altosoftware.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 12 19:28:33 2026 GMT
  hsts: true
- host: connect.vebraalto.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Jan 20 23:59:59 2027 GMT
  hsts: false
- host: developers.vebraalto.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Mar 10 23:59:59 2027 GMT
  hsts: false
domains:
- domain: altosoftware.co.uk
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine
- domain: vebraalto.com
  dnssec: false
  caa:
  - 0 issue "amazon.com"
  - 0 issue "amazonaws.com"
  - 0 issue "amazontrust.com"
  - 0 issue "awstrust.com"
  - 0 issue "godaddy.com"
  - 0 issue "letsencrypt.org"
  spf: false
  dmarc: false
- domain: zoopla.co.uk
  dnssec: false
  caa:
  - 0 issue "pki.goog; cansignhttpexchanges=yes"
  - 0 issue "amazon.com"
  - 0 issue "letsencrypt.org"
  - 0 issuewild "amazon.com"
  - 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: zoopladev.co.uk
  dnssec: false
  caa: []
  spf: false
  dmarc: true
  dmarc_policy: reject