For those interested in the Apple Serial Number Info site, it is AppleSerialNumberInfo.com.

For an Apple serial number alternative that is free and does not meter usage, you may like EveryMac.com. Founded in 1996, EveryMac.com can not only decode Macs by serial number and other identifiers, but it also has Mac answers, comparison, prices and more. EveryMac.com additionally offers an affordable Apple Serial Number API.