Over the previous 1 771 day period beginning on August 29, 2021, there were 16 checks done on customs.gov.sg's availability. From tests, customs.gov.sg had 15 instances of uptime, the most recent of which occurred on May 11, 2026, with a 200 code. 6.25% of evaluations performed resulted in customs.gov.sg being unavailable, occurring 1 times, with October 26, 2025, being the most recent instance. As of July 6, 2026, no error responses had been noted in the replies that were received. On May 11, 2026, customs.gov.sg responded in 1.486 seconds, which contrasted with its average response time of 1.091 seconds.