User reports
0
Near baseline. 0 in the last hour. Typical hour is about 0.
All services / Education
Is Crossref down?
Checks are succeeding, user reports are near the baseline, and the vendor status page is clear.
Live diagnosis
Is it just me?
Finds the most likely layer (the service, your ISP or area, DNS, or your Wi-Fi) and gives two steps to try.
Your browser → crossref.org—
Your browser → us—
Our checksReaching it
Official · ReportsAll clear · Near baseline
DNS (1.1.1.1 · Google)—
Your provider—
Connection—
Upstream—
Press Run testYour browser tests the site, us, and two public DNS resolvers. We never store your IP; only anonymous counts by network and region.
Live outage map
No reports in the last 24 hours.
Dots are whole states, provinces or countries, never exact locations. We never store IP addresses. Every report with a known place can appear on the map. Updates every minute.
What's broken
Recent reports
Each row is a time, a coarse place, and a problem type from a new report. Optional notes stay private. Places with fewer than 3 reports in the last 8 days are shown without a location.
No public reports yet.
Our checks
Reaching it
Last checked 1 hr ago. Last stored result reached it in 244 ms.
Official status
All clear
All Systems Operational Official status page
Reports and checks
Numbers behind the chart
| Time (UTC) | Reports | Baseline | Latency | Failed checks |
|---|---|---|---|---|
| Mon 15 | 0 | 0.0 | 288 ms | 0 |
| Mon 17 | 0 | 0.0 | 208 ms | 0 |
| Mon 19 | 0 | 0.0 | 247 ms | 0 |
| Mon 21 | 0 | 0.0 | 230 ms | 0 |
| Mon 23 | 0 | 0.0 | 266 ms | 0 |
| Tue 01 | 0 | 0.0 | 233 ms | 0 |
| Tue 03 | 0 | 0.0 | 306 ms | 0 |
| Tue 05 | 0 | 0.0 | 272 ms | 0 |
| Tue 07 | 0 | 0.0 | 247 ms | 0 |
| Tue 10 | 0 | 0.0 | 252 ms | 0 |
| Tue 12 | 0 | 0.0 | 256 ms | 0 |
| Tue 14 | 0 | 0.0 | 259 ms | 0 |
| Tue 16 | 0 | 0.0 | 267 ms | 0 |
| Tue 18 | 0 | 0.0 | 302 ms | 0 |
| Tue 21 | 0 | 0.0 | 250 ms | 0 |
| Tue 23 | 0 | 0.0 | 297 ms | 0 |
| Wed 01 | 0 | 0.0 | 267 ms | 0 |
| Wed 03 | 0 | 0.0 | 291 ms | 0 |
| Wed 06 | 0 | 0.0 | 248 ms | 0 |
| Wed 08 | 0 | 0.0 | 268 ms | 0 |
| Wed 10 | 0 | 0.0 | 222 ms | 0 |
| Wed 12 | 0 | 0.0 | 311 ms | 0 |
| Wed 14 | 0 | 0.0 | 138 ms | 0 |
| Wed 16 | 0 | 0.0 | 249 ms | 0 |
| Wed 19 | 0 | 0.0 | 252 ms | 0 |
| Wed 21 | 0 | 0.0 | 318 ms | 0 |
| Wed 23 | 0 | 0.0 | 157 ms | 0 |
| Thu 01 | 0 | 0.0 | 341 ms | 0 |
| Thu 03 | 0 | 0.0 | 312 ms | 0 |
| Thu 05 | 0 | 0.0 | 269 ms | 0 |
| Thu 07 | 0 | 0.0 | 244 ms | 0 |
| Thu 09 | 0 | 0.0 | 352 ms | 0 |
| Thu 11 | 0 | 0.0 | 250 ms | 0 |
| Thu 13 | 0 | 0.0 | 244 ms | 0 |
| Thu 15 | 0 | 0.0 | 217 ms | 0 |
| Thu 17 | 0 | 0.0 | 310 ms | 0 |
| Thu 20 | 0 | 0.0 | 246 ms | 0 |
| Thu 22 | 0 | 0.0 | 249 ms | 0 |
| Fri 00 | 0 | 0.0 | 292 ms | 0 |
| Fri 02 | 0 | 0.0 | 215 ms | 0 |
| Fri 04 | 0 | 0.0 | 308 ms | 0 |
| Fri 05 | 0 | 0.0 | 214 ms | 0 |
| Fri 07 | 0 | 0.0 | 202 ms | 0 |
| Fri 09 | 0 | 0.0 | 206 ms | 0 |
| Fri 11 | 0 | 0.0 | 274 ms | 0 |
| Fri 13 | 0 | 0.0 | 283 ms | 0 |
| Fri 15 | 0 | 0.0 | 287 ms | 0 |
| Fri 17 | 0 | 0.0 | 244 ms | 0 |
Reliability
100%Uptime · 30 days
100%Uptime · 90 days
0 / 0Outages · 30 / 90 days
—Average outage
100% uptime · No user reports in the last 24h
90 days ago → today. Uptime is from our own HTTP checks; outages are incidents that lasted long enough to list. We have 8 days of data so far, so the 90-day numbers fill in over time.
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Past outages
No outages on record for Crossref yet. Outages of 10 minutes or more get their own page here.
Having trouble with Crossref?
One report per service every 10 minutes from this network. No account.
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About Crossref
Crossref, at crossref.org, is one of the Education services we monitor. Crossref is open infrastructure linking the world's research. 26,500 members, 171 countries, 2.1 billion monthly API queries.
Crossref publishes an official status page at status.crossref.org; when we can read it, its incident level is folded into the status shown here.
Typical issues with education services: learning management systems and student portals slowing down around assignment deadlines, exams and registration.
Measured uptime from our checks: 100% over 8 days of checks. No public incidents logged since monitoring began 8 days ago.
Response time over the last 24 hours: 251 ms average, 202–308 ms range across 13 successful checks.
Questions
Is Crossref down right now?
Checks are succeeding, user reports are near the baseline, and the vendor status page is clear.
When was Crossref last down?
We have not recorded a public Crossref incident since monitoring began 8 days ago.
What is Crossref's uptime?
From our own checks: 100% over 8 days of checks.
How fast does Crossref respond?
251 ms on average over the last 24 hours (202–308 ms).
Does Crossref have an official status page?
Yes, at https://status.crossref.org.
Crossref not working for me but the status is fine. What now?
It is usually local: try another browser or the app, switch between Wi-Fi and mobile data, and clear the cache. For education services, watch for learning management systems and student portals slowing down around assignment deadlines, exams and registration. If many people report Crossref here at once, the problem is on Crossref's side.
How we detect and verify outages · Dispute this report · We review disputes within 24 hours.
Community comments
Share what you are seeing with Crossref. No account needed. Comments are public, separate from outage reports. Do not include personal information.
No links or domains. 3 comments per service and 6 total per hour, per device and network. New contributors get one visible comment; further comments wait for review.