Website readiness profile · Snapshot 23 October 2026
se.com
se.com's public homepage, certificate and DNS checked against 31 practices and compared with 132 Energy, Electricity & Gas sites.
- Readiness index
- 89/100
- Ahead of
- >99%
- Practices observed
- 26/30
- Popularity band
- Top 50K
Energy, Electricity & Gas median 64
of measured Energy, Electricity & Gas sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: se.com. Thin bar: Energy, Electricity & Gas peer median.
Enable
100/100
Peers 74
Harden
89/100
Peers 65
Accelerate
74/100
Peers 51
Recover
100/100
Peers 17
Priority fixes for se.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 6 external scripts without async or defer.
Why it matters: A plain <script src> in the head stops the browser from showing anything until that file has downloaded and run.
What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.
30% of Energy, Electricity & Gas peers do this. Limit: Based on the homepage HTML delivered to an automated client; scripts that run later were not executed.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 2 · Accelerate
HTTP/3 advertised
Observed: The homepage did not advertise HTTP/3 through an Alt-Svc header.
What to do: Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.
On Amazon CloudFront: Select HTTP/3 in the distribution's supported HTTP versions.
20% of Energy, Electricity & Gas peers do this.
Priority 3 · Harden
Certificate lifetime of 100 days or less
Observed: The certificate from DigiCert Inc had a 198-day validity period, longer than the 100-day maximum that applies from March 2027.
What to do: Move to automated issuance and renewal now, while you still have time to test it.
35% of Energy, Electricity & Gas peers do this.
Priority 4 · Harden
CAA records limit who can issue certificates
Observed: No CAA record was found for se.com, so any public certificate authority may issue for it.
What to do: Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.
11% of Energy, Electricity & Gas peers do this.
What se.com already does well
Practices fewer than half of Energy, Electricity & Gas peers use.
- security.txt publishedsecurity.txt with a contact found.7.9% of peers
- DNSSEC signedDNSSEC delegation (DS record) present.15% of peers
- Nameservers spread across providersNameservers spread across more than one operator.17% of peers
What we saw
- Homepage checked
- https://www.se.com/
- Homepage response
- HTTP 200, after 1 redirect
- TLS
- TLSv1.3, HTTP/2
- Certificate
- DigiCert, 198-day validity, expiring 2027-02-22
- CDN or edge
- Akamai, Amazon CloudFront
- DNS operators
- 2 self-run or other nameserver domains
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 1,937 KB, br
- Images on homepage
- 32 (webp 20, svg 3, jpg 1)
Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.
Stack and providers
Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.
All 31 checks
Select a gap for the method and fix. How each check works
Not observed 4
Observed 26
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DNSSEC signed
- security.txt published
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- Modern image formats in use
- Offscreen images lazy-loaded
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Social preview image set
- Page language declared
- At most one redirect to the homepage
- Nameservers spread across providers
Not measured 1
- Static files cached for 30 days or more
Own se.com?
Re-run the checks after a change, or verify the site in a free workspace to save reports with history, compare against similar sites and competitors, and track a private action plan. What owners get.
Live status for this site: Status Is Down: se.com. This profile covers configuration only.