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Namedays Calendar vs Vonage (Nexmo) API

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

APINamedays CalendarDYING88Vonage (Nexmo) APIHEALTHY94
Uptime · 30d
Uptime · 90d91.2%100%
Uptime · 30d85.0%100%
P50 · ms480507
P95 · ms27491019
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limit60 req/window · 58 remaining10, 120;w=60;name="crd|generic_key^nexmo-gloo.sanity-service-remote-address-120-rpm|remote_address", 10;w=1;name="crd|generic_key^nexmo-gloo.sanity-service-remote-address-10-rps|remote_address" req/window · 9 remaining · resets 1
In directory since2026-07-052026-07-05
operationalpartialdownno data

Namedays Calendar vs Vonage (Nexmo) API: common questions

Which is more reliable, Namedays Calendar or Vonage (Nexmo) API?

On our scheduled checks, Vonage (Nexmo) API leads on measured uptime — Namedays Calendar at 91.2% versus Vonage (Nexmo) 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 Vonage (Nexmo) API?

Namedays Calendar has the lower median latency in our checks — Namedays Calendar responds in 480 ms versus Vonage (Nexmo) API at 507 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 Vonage (Nexmo) API need an API key?

Namedays Calendar needs no key, while Vonage (Nexmo) 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 Vonage (Nexmo) API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Namedays Calendar and Vonage (Nexmo) API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Namedays Calendar and Vonage (Nexmo) API free for commercial use?

Namedays Calendar has unclear commercial terms, and Vonage (Nexmo) 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.