AirTags set up shows wrong phone number
iPhone 11 Pro, iOS 14.5
iPhone is signed into MY Apple ID. All places on my phone show my phone number (my Contact Card, iMessage, FaceTime, etc). However, when I go to add an AirTag, it shows my husband's phone number. We have Family Sharing set up, but there's no reason why my Apple ID would show his phone number in this instance. Both accounts have 2FA set up, and we've added each other's numbers as secondary trusted phone numbers.
For obvious reasons, I would want the AirTag assigned to my phone number. Any ideas would be appreciated.
iPhone 11 Pro