Website readiness profile · Snapshot 23 October 2026

turkcell.com.tr

turkcell.com.tr's public homepage, certificate and DNS checked against 31 practices and compared with 285 Telecommunications & Internet sites.

Readiness index: 69/100
Ahead of: 58%
Practices observed: 19/30
Popularity band: Top 50K

Measured 2026-10-23 12:10:19 UTC from one location. How we measure

Readiness by lane

Green: turkcell.com.tr. Thin bar: Telecommunications & Internet peer median.

Enable

87/100

Peers 82

Harden

69/100

Peers 61

Accelerate

53/100

Peers 57

Recover

0/100

Peers 16

Priority fixes for turkcell.com.tr

Ordered by impact and by how common each practice is among peers.

Priority 1 · Accelerate
HTTP/2 negotiated
Observed: The TLS handshake selected HTTP/1.1 instead of HTTP/2.
Why it matters: HTTP/2 sends many files over one connection, which speeds up pages with lots of images, styles and scripts.
What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.
72% of Telecommunications & Internet peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Guide: CDN Guide for Website Owners
Priority 2 · Harden
DMARC policy enforces quarantine or reject
Observed: The DMARC policy for turkcell.com.tr was p=none, which asks receivers to take no action on failing mail.
What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.
59% of Telecommunications & Internet peers do this.
Guide: A Practical Website Health Check for Owners
Priority 3 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 2 external scripts without async or defer.
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.
On Next.js: Use the next/script component with an appropriate loading strategy.
37% of Telecommunications & Internet peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 4 · Enable
Social preview image set
Observed: The homepage had no og:image, so shared links may show without a preview image.
What to do: Add Open Graph tags, including og:image with a 1200 x 630 image.
59% of Telecommunications & Internet peers do this.
Guide: SEO Checklist for a New Website

What turkcell.com.tr already does well

Practices fewer than half of Telecommunications & Internet peers use.

Referrer-Policy setReferrer-Policy present.33% of peers
Content Security Policy presentContent-Security-Policy present.48% of peers

What we saw

Homepage checked: https://www.turkcell.com.tr/
Homepage response: HTTP 200
TLS: TLSv1.3
Certificate: GlobalSign, 396-day validity, expiring 2027-04-10
Platform or framework: Next.js, Nuxt
DNS operators: 1 self-run or other nameserver domain
HSTS: max-age 365 days, includeSubDomains, preload
DMARC policy: p=none
Homepage HTML: 831 KB, gzip
Images on homepage: 307 (webp 135, svg 89, png 59, jpg 24)

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.

Next.js readiness playbook Nuxt readiness playbook GlobalSign (certificate authority)

All 31 checks

Select a gap for the method and fix. How each check works

Not observed 11

Observed 19

HTTP requests move to HTTPS
HSTS kept for at least a year
TLS 1.3 negotiated
Certificate has more than 14 days left
X-Content-Type-Options: nosniff
Framing restricted
Content Security Policy present
Referrer-Policy set
HTML compressed
Modern image formats in use
Offscreen images lazy-loaded
robots.txt published
XML sitemap discoverable
Canonical URL declared
Meta description written
Mobile viewport configured
Structured data present
Page language declared
At most one redirect to the homepage

Not measured 1

Static files cached for 30 days or more

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Live status for this site: Status Is Down: turkcell.com.tr. This profile covers configuration only.

Compare with other Telecommunications & Internet sites

Telecommunications & Internet readiness benchmark