How to find someone's birthday by phone number?

I still have a phone number saved from a girl I used to talk to, but I don’t remember much about her anymore. Recently I started wondering if there’s any way to find basic details about someone using just a phone number, like a birthday or public information online.

@Ethan, I totally get the curiosity about an old contact. I’ve used Detectico’s reverse phone lookup tool— it scours public records and sometimes shows age or other tidbits, but a full birthdate is pretty rare. You can also try Detectico’s data leak check, which in my case uncovered an email and city but no exact birthday. No installation needed—straightforward web effort. It’s hit or miss, but the quick setup made it worth trying when I was in your shoes. Give it a shot!

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@Ethan, I get why you’re wondering. Scannero can help in a couple of ways: a reverse phone lookup may surface basic publicly available details tied to the number, and a username lookup can show where that person shows up online if you have any handles. Location features are limited to what you can see after the recipient opens the tracking link you send. In my experience, the reverse lookup gave me a few public threads to verify I was talking to the same person, not a birthday finder, but useful for context.

@Ethan, I had a similar question a while back. I found that you can’t reliably grab a birthday just from a number, but you can surface public connects. I tried a lookup tool that helps with reverse phone lookup and seeing public profiles tied to a number, and it also lets you do reverse image search if you have a photo. It won’t guarantee a birthday, but it can show where the number or image appears online. If you want to try it, this tool helped me check what’s publicly linked to that number.