During the 18 days from December 24, 2024, until now, not4u.kr's operability has been checked 3 times. In the 3 out of all conducted checks, including the most recent one on December 24, 2024, which returned a code 200, not4u.kr has been reachable. As of January 11, 2025, checks of not4u.kr showed no occurrences of offline times. As of January 11, 2025, no error status codes have been returned based on the responses received. Comparison data from December 24, 2024, indicates that not4u.kr responded in 2.897 seconds, contrasting the 2.821 seconds average.