Is Customer.io down in the US?
Checks passingin the US, measured from Ashburn and San Jose
All 2 of our probes in the US, in Ashburn and San Jose, read checks passing when they last checked Customer.io at Nov 5, 2026, 6:02 PM UTC.
Over the last 24 hours we completed 254 checks from Ashburn and San Jose and 254 answered cleanly, 100.00% availability.
Of the 2 other regions we check Customer.io from, all 2 read checks passing right now.
Email me the next time we see Customer.io go down
What our Ashburn and San Jose probes measured
Last checked Nov 5, 2026, 6:02 PM UTC.
Customer.io from Ashburn and San Jose over the last 30 days
Over the last 30 days, Customer.io answered our Ashburn probe in 1,000 ms on average, and 1 check in 20 took longer than 1,423 ms.
Over the last 30 days, Customer.io answered our San Jose probe in 1,168 ms on average, and 1 check in 20 took longer than 1,831 ms.
Ranked by average response time across the 4 cities we check Customer.io from, Ashburn 2nd, San Jose 3rd; Frankfurt was fastest at 864 ms and Tokyo slowest at 1,569 ms.
From Ashburn and San Jose we ran 797 checks of Customer.io in 4 days, and 796 answered cleanly: 99.87% availability.
1 of the 4 days had at least one failed check. The weakest was Nov 3 (UTC), at 99.59% across 249 checks.
In Ashburn local time (EST), Customer.io was slowest around 12 AM, at 1,372 ms on average over the last 14 days, and quickest around 9 AM, at 755 ms.
| Day (UTC) | Checks | Availability | Average response |
|---|---|---|---|
| Thu, Nov 5 | 188 | 100.00% | 1,113 ms |
| Wed, Nov 4 | 254 | 100.00% | 1,038 ms |
| Tue, Nov 3 | 249 | 99.59% | 1,092 ms |
| Mon, Nov 2 | 106 | 100.00% | 1,050 ms |
Customer.io outages measured from the US
Our Ashburn and San Jose probes measured no confirmed Customer.io outage in the last 90 days.
How the other regions read right now
Of the 2 other regions we check Customer.io from, all 2 read checks passing right now.
| Probe city | Right now | Last 24h |
|---|---|---|
| Frankfurt | Checks passing | 100.00% of 101 checks |
| Tokyo | Checks passing | 100.00% of 61 checks |
Other countries we check Customer.io from
How we measured this
The US readings on this page come from RealUptime's own Ashburn and San Jose probes against Customer.io's public endpoints. They are not user reports, and they are not Customer.io's own status page.
See Customer.io's full check readings, the 90-day history by region, or the outage tracker methodology.
The US readings here are taken from that country and show the time of the last one, but Customer.io has not yet accumulated enough continuous history for us to publish this page to search engines.
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