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Namedays Calendar vs Telnyx API

Same instrument, two spec sheets — measured, not claimed.

APINamedays CalendarDYING88Telnyx APIHEALTHY97
Uptime · 30d
Uptime · 90d91.2%100%
Uptime · 30d85.0%100%
P50 · ms480246
P95 · ms2749570
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limit60 req/window · 58 remaining50, 50;w=1 req/window · 49 remaining · resets 1
In directory since2026-07-052026-07-05
operationalpartialdownno data

Namedays Calendar vs Telnyx API: common questions

Which is more reliable, Namedays Calendar or Telnyx API?

On our scheduled checks, Telnyx API leads on measured uptime — Namedays Calendar at 91.2% versus Telnyx API at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Namedays Calendar or Telnyx API?

Telnyx API has the lower median latency in our checks — Namedays Calendar responds in 480 ms versus Telnyx API at 246 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Namedays Calendar and Telnyx API need an API key?

Namedays Calendar needs no key, while Telnyx API requires a free API key. If you want to start calling without signup, reach for Namedays Calendar first.

Can I call Namedays Calendar and Telnyx API from the browser?

Only Telnyx API is browser-friendly — it returns CORS headers over HTTPS. Namedays Calendar needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Namedays Calendar and Telnyx API free for commercial use?

Namedays Calendar has unclear commercial terms, and Telnyx API has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.