Atco Domain Security
Domain security posture for ATCO, probed live across 7 host(s) and 3 registrable domain(s). 7 host(s) serve HTTPS (up to TLSv1.3); 5 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=none).
Transport & Host Security
Domain (DNS/Email) Security
Source
Domain Security
generated: '2026-07-27'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
note: >-
The API host is not an ATCO domain. ATCO Electric's only public API is served from Esri's
shared ArcGIS Online tenant infrastructure (services7.arcgis.com), so the security posture that
actually protects the API belongs to Esri, while ATCO's own domains carry no API at all. Both
are recorded below and labelled.
hosts:
- host: services7.arcgis.com
role: API host (ArcGIS Online hosted feature services)
operator: Esri
atco_controlled: false
https: true
tls_version: TLSv1.3
cert_expires: Oct 13 23:59:59 2026 GMT
hsts: true
hsts_max_age: 63072000
cors_allow_origin: '*'
- host: www.atco.com
role: corporate website
operator: ATCO
atco_controlled: true
https: true
tls_version: TLSv1.3
cert_expires: Nov 15 23:59:59 2026 GMT
hsts: true
hsts_max_age: 31557600
- host: electric.atco.com
role: ATCO Electric — publisher of the hosting capacity map
operator: ATCO
atco_controlled: true
https: true
tls_version: TLSv1.3
cert_expires: Nov 15 23:59:59 2026 GMT
hsts: true
hsts_max_age: 31557600
- host: gas.atco.com
role: ATCO Gas
operator: ATCO
atco_controlled: true
https: true
tls_version: TLSv1.3
cert_expires: Nov 15 23:59:59 2026 GMT
hsts: true
hsts_max_age: 31557600
- host: www.atcoenergy.com
role: ATCO Energy — competitive Alberta retailer (Webflow-hosted)
operator: ATCO
atco_controlled: true
https: true
tls_version: TLSv1.3
cert_expires: Sep 25 21:27:28 2026 GMT
hsts: false
hsts_max_age: null
- host: store.atco.com
role: Salesforce CloudCraze customer commerce login (My Account)
operator: Salesforce (on ATCO's behalf)
atco_controlled: partial
https: true
tls_version: TLSv1.3
cert_expires: Sep 7 14:52:11 2026 GMT
hsts: false
hsts_max_age: null
note: >-
This is where a customer's own usage and billing data lives. It carries no HSTS, which is the
weakest posture on the estate and sits on the most sensitive surface.
- host: poweroutage.atco.com
role: customer outage map (Flutter single-page app)
operator: ATCO
atco_controlled: true
https: true
tls_version: TLSv1.3
cert_expires: Sep 21 19:10:47 2026 GMT
hsts: true
hsts_max_age: 31556926
domains:
- domain: atco.com
atco_controlled: true
dnssec: false
caa: []
spf: true
dmarc: true
dmarc_policy: none
note: >-
No DNSSEC, no CAA record, and DMARC is at p=none — monitoring only, no enforcement. All three
are real gaps for a critical-infrastructure operator.
- domain: atcoenergy.com
atco_controlled: true
dnssec: false
caa: []
spf: true
dmarc: true
dmarc_policy: none
spf_record: 'v=spf1 ip4:192.210.5.0/24 ip4:192.210.10.0/24 ip4:141.118.20.0/24 include:aspmx.pardot.com include:_spf.qualtrics.com ~all'
dmarc_record: 'v=DMARC1; p=none; rua=mailto:xtz8hoer@ag.dmarcian.com'
- domain: arcgis.com
atco_controlled: false
operator: Esri
dnssec: true
caa:
- 0 issue "amazon.com"
- 0 issue "amazonaws.com"
- 0 issue "amazontrust.com"
- 0 issue "awstrust.com"
- 0 issue "digicert.com"
- 0 issue "letsencrypt.org"
- 0 issuewild "amazon.com"
- 0 issuewild "amazonaws.com"
- 0 issuewild "amazontrust.com"
- 0 issuewild "awstrust.com"
- 0 issuewild "digicert.com"
- 0 iodef "mailto:vkeymaster@esri.com"
spf: true
dmarc: true
dmarc_policy: reject
note: >-
Recorded for completeness because it is the API host's registrable domain. Esri's posture is
materially stronger than ATCO's — DNSSEC signed, a full CAA policy with an iodef contact, and
DMARC at p=reject. This is inherited by the ATCO API, not earned by ATCO.
summary:
atco_domains_with_dnssec: 0
atco_domains_with_caa: 0
atco_domains_with_dmarc_enforcement: 0
atco_hosts_without_hsts: [www.atcoenergy.com, store.atco.com]
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