From February 26, 2021, up until now, d-card.jp has been checked for availability 4 times over a period of 1 413 days. During the course of the checks, d-card.jp was online 4 times, the last uptime occurred on January 3, 2025, and a code 200 was returned. During inspections, as of January 9, 2025, no instances of d-card.jp being unavailable were found. The results of the replies received as of January 9, 2025, confirmed that no responses had an error status. The response time noted for d-card.jp was 6.513 seconds on January 3, 2025, against a 5.770 seconds average.