# OCLC outage reports and status

Canonical page: https://iszdown.com/now/oclc

Status: Website reachable in latest check

24-hour window (UTC): 2026-10-18T06:40:00.000Z to 2026-10-19T06:40:00.000Z

Recorded outage reports in this window: 0

Last successful estimated-activity check: No usable observation available

OCLC, Inc., doing business as OCLC, is an American nonprofit cooperative organization "dedicated to the public purposes of furthering access to the world's information and reducing information costs". It was founded in 1967 as the Ohio College Library Center, then became the Online Computer Library Center as it expanded. In 2017, the name was formally changed to OCLC, Inc. OCLC and its member libraries cooperatively produce and maintain WorldCat, the largest online public access catalog in the world. OCLC is funded mainly by the fees that libraries pay for the many different services it offers. OCLC also maintains the Dewey Decimal Classification system.

## How to interpret this page

Estimated down reports are based on US Google Trends problem-intent searches. Values are relative activity from 0 to 100, not counts of submitted reports. The HTML chart averages samples into ten-minute intervals. Partial samples are excluded and missing samples are not invented.

Recorded outage reports and estimated activity are separate signals. Neither confirms that every user is affected. Missing or stale data does not establish that a service is working.

Methodology: https://iszdown.com/methodology

## Citation

Cite [OCLC on Iszdown](https://iszdown.com/now/oclc), include your access time and the observation time above, and qualify estimated activity as an estimate. Recheck before describing current status. Iszdown is independent of the monitored provider.

## Estimated activity samples

No usable Google Trends samples are available for this service in this window.

## Evidence and recovery

Website reachable in latest check. The public website responded; signed-in features and APIs were not tested.

No recent recovery can be established from available evidence.

## Website measurements

Successful sampled checks (24h): 100% (3/3). Restricted checks: 0. Median response: 182 ms. P95 response: 486 ms.

These are sampled public website checks from one US server, not continuous uptime or authenticated app/API tests. Missing data stays unknown.


## Related services

- [OCLC](https://iszdown.com/now/oclc)