Cisco Spark vs Kickbox

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

Uptime · 30d
Uptime · 90d99.44%100%
Uptime · 30d100%100%
P50 · ms1331358
P95 · ms29363630
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — open disposable-address check
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Cisco Spark vs Kickbox: common questions

Which is more reliable, Cisco Spark or Kickbox?

On our scheduled checks, Kickbox leads on measured uptime — Cisco Spark at 99.44% versus Kickbox 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, Cisco Spark or Kickbox?

Kickbox has the lower median latency in our checks — Cisco Spark responds in 1331 ms versus Kickbox at 358 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 Cisco Spark and Kickbox need an API key?

Kickbox needs no key, while Cisco Spark requires a free API key. If you want to start calling without signup, reach for Kickbox first.

Can I call Cisco Spark and Kickbox from the browser?

Yes — both Cisco Spark and Kickbox send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Cisco Spark and Kickbox free for commercial use?

Cisco Spark has unclear commercial terms, and Kickbox 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.