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AZ511 vs Transport for Philadelphia, US

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

APIAZ511NEW—Transport for Philadelphia, USNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

AZ511 vs Transport for Philadelphia, US: common questions

Which is more reliable, AZ511 or Transport for Philadelphia, US?

On our scheduled checks, Transport for Philadelphia, US leads on measured uptime — AZ511 at —% versus Transport for Philadelphia, US at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do AZ511 and Transport for Philadelphia, US need an API key?

Transport for Philadelphia, US needs no key, while AZ511 requires a free API key. If you want to start calling without signup, reach for Transport for Philadelphia, US first.

Can I call AZ511 and Transport for Philadelphia, US from the browser?

Neither sends browser-friendly CORS headers reliably, so call AZ511 and Transport for Philadelphia, US from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are AZ511 and Transport for Philadelphia, US free for commercial use?

AZ511 has unclear commercial terms, and Transport for Philadelphia, US 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.