Alto (Vebra / Zoopla) · Domain Security

Alto Vebra Domain Security

Domain security

Domain security posture for Alto (Vebra / Zoopla), probed live across 8 host(s) and 4 registrable domain(s). 8 host(s) serve HTTPS (up to TLSv1.2); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=quarantine).

Real-EstateUnited KingdomPropTechProperty ListingsCRMProperty ManagementRentalsConveyancingEstate AgencyTenancyWebhookEventLettingsSales ProgressionProperty DataReal Estate Software

Transport & Host Security

api.alto.zoopla.co.uk
HTTPS: yes · TLS: TLSv1.2 · HSTS: no · cert expires: Oct 6 23:59:59 2026 GMT
api.alto.zoopladev.co.uk
HTTPS: yes · TLS: TLSv1.2 · HSTS: no · cert expires: Jan 16 23:59:59 2027 GMT
services.zoopla.co.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Nov 14 23:59:59 2026 GMT
services-auth.services.zoopla.co.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Nov 18 23:59:59 2026 GMT
id.vebraalto.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no
www.altosoftware.co.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 12 19:28:33 2026 GMT
connect.vebraalto.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Jan 20 23:59:59 2027 GMT
developers.vebraalto.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Mar 10 23:59:59 2027 GMT

Domain (DNS/Email) Security

altosoftware.co.uk
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · CAA: none
vebraalto.com
DNSSEC: no · SPF: no · DMARC: no · CAA: yes
zoopla.co.uk
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes
zoopladev.co.uk
DNSSEC: no · SPF: no · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

Raw ↑ 
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

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