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Callook.info vs SnapshotAPI

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

APICallook.infoHEALTHY94SnapshotAPIDEAD0
Uptime · 30d
Uptime · 90d100%6.9%
Uptime · 30d100%0.0%
P50 · ms437396
P95 · ms1156547
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (data from public FCC ULS records)Unverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Callook.info vs SnapshotAPI: common questions

Which is more reliable, Callook.info or SnapshotAPI?

On our scheduled checks, Callook.info leads on measured uptime — Callook.info at 100% versus SnapshotAPI at 6.9% 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, Callook.info or SnapshotAPI?

SnapshotAPI has the lower median latency in our checks — Callook.info responds in 437 ms versus SnapshotAPI at 396 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 Callook.info and SnapshotAPI need an API key?

Callook.info needs no key, while SnapshotAPI requires a free API key. If you want to start calling without signup, reach for Callook.info first.

Can I call Callook.info and SnapshotAPI from the browser?

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

Are Callook.info and SnapshotAPI free for commercial use?

Callook.info has unclear commercial terms, and SnapshotAPI 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.