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Nationalize.io vs Serialif Color

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

APINationalize.ioHEALTHY93Serialif ColorDYING42
Uptime · 30d
Uptime · 90d97.1%35.3%
Uptime · 30d100%36.7%
P50 · ms4481680
P95 · ms9853886
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierKeyless usage limited (x-rate-limit-limit: 25 observed); 2,500 names/mo with a free keyFree — limits not published
Rate limitKeyless cap 25 per x-rate-limit-limit header; remaining/reset exposed in response headersUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Nationalize.io vs Serialif Color: common questions

Which is more reliable, Nationalize.io or Serialif Color?

On our scheduled checks, Nationalize.io leads on measured uptime — Nationalize.io at 97.1% versus Serialif Color at 35.3% 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, Nationalize.io or Serialif Color?

Nationalize.io has the lower median latency in our checks — Nationalize.io responds in 448 ms versus Serialif Color at 1680 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 Nationalize.io and Serialif Color need an API key?

Neither needs a paid key — Nationalize.io is callable with no signup, and Serialif Color is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Nationalize.io and Serialif Color from the browser?

Only Nationalize.io is browser-friendly — it returns CORS headers over HTTPS. Serialif Color needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Nationalize.io and Serialif Color free for commercial use?

Nationalize.io has unclear commercial terms, and Serialif Color 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.