In Delaware, reverse phone lookup tools are highly effective for identifying established landlines and contract-based mobile numbers within the 302 area code. Reliability is generally high because Delaware’s compact, single-area-code infrastructure allows for more centralized public record aggregation. However, for VoIP services or burner numbers, accuracy can drop significantly. Checking a dedicated website is often the best way to determine if a number is linked to a legitimate resident or a spoofed scammer. VoIP numbers are notoriously difficult to trace because they can be easily reassigned and often lack a permanent physical address. For recently reassigned lines, users should expect a "no record found" result or outdated information for several months while carrier databases synchronize.