shipapis
StarSubmit an APISubmit API

ListLoco API vs Nationalize.io

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

APIListLoco APIHEALTHY100Nationalize.ioHEALTHY93
Uptime · 30d
Uptime · 90d100%97.1%
Uptime · 30d100%100%
P50 · ms127448
P95 · ms443985
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedKeyless usage limited (x-rate-limit-limit: 25 observed); 2,500 names/mo with a free key
Rate limitUnpublishedKeyless cap 25 per x-rate-limit-limit header; remaining/reset exposed in response headers
In directory since2026-07-052026-07-05
operationalpartialdownno data

ListLoco API vs Nationalize.io: common questions

Which is more reliable, ListLoco API or Nationalize.io?

On our scheduled checks, ListLoco API leads on measured uptime — ListLoco API at 100% versus Nationalize.io at 97.1% 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, ListLoco API or Nationalize.io?

ListLoco API has the lower median latency in our checks — ListLoco API responds in 127 ms versus Nationalize.io at 448 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 ListLoco API and Nationalize.io need an API key?

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

Can I call ListLoco API and Nationalize.io from the browser?

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

Are ListLoco API and Nationalize.io free for commercial use?

ListLoco API has unclear commercial terms, and Nationalize.io 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.