Lexigram vs NPPES
Same instrument, two spec sheets — measured, not claimed.
Lexigram vs NPPES: common questions
Which is more reliable, Lexigram or NPPES?
On our scheduled checks, NPPES leads on measured uptime — Lexigram at 99.02% versus NPPES 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, Lexigram or NPPES?
Lexigram has the lower median latency in our checks — Lexigram responds in 807 ms versus NPPES at 910 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 Lexigram and NPPES need an API key?
NPPES needs no key, while Lexigram requires a free API key. If you want to start calling without signup, reach for NPPES first.
Can I call Lexigram and NPPES from the browser?
Neither sends browser-friendly CORS headers reliably, so call Lexigram and NPPES from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Lexigram and NPPES free for commercial use?
Lexigram has unclear commercial terms, and NPPES allows commercial use on its free tier. 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.