No-as-a-Service vs User Agent Lookup API

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

Uptime · 30d
Uptime · 90d98.0%100%
Uptime · 30d98.3%100%
P50 · ms547426
P95 · ms1771764
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

No-as-a-Service vs User Agent Lookup API: common questions

Which is more reliable, No-as-a-Service or User Agent Lookup API?

On our scheduled checks, User Agent Lookup API leads on measured uptime — No-as-a-Service at 98.0% versus User Agent Lookup 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, No-as-a-Service or User Agent Lookup API?

User Agent Lookup API has the lower median latency in our checks — No-as-a-Service responds in 547 ms versus User Agent Lookup API at 426 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 No-as-a-Service and User Agent Lookup API need an API key?

Neither needs a paid key — No-as-a-Service is callable with no signup, and User Agent Lookup API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call No-as-a-Service and User Agent Lookup API from the browser?

Only No-as-a-Service is browser-friendly — it returns CORS headers over HTTPS. User Agent Lookup API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are No-as-a-Service and User Agent Lookup API free for commercial use?

No-as-a-Service has unclear commercial terms, and User Agent Lookup 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.