A year after The Post revealed that CUNY math professor Ari Nagel had fathered 23 kids — some conceived the old-fashioned way, others involving sperm handoffs at public spots such as the Atlantic Center Target in downtown Brooklyn — he’s back. Nagel, 41, has donated his supersperm to even more women, resulting in four kids born since last Father’s Day. And eight other ladies, from Florida to Maryland to the Bronx, are currently pregnant because of him.

In fact, wannabe mommies from all over the globe have reached out to Nagel after seeing his story in The Post: He’s had inquiries from Turkey, Nigeria, South Africa and even China.

The Sperminator’s summer is jam-packed with trips timed to ovulation schedules. He’s flying to Israel this week to meet a woman who will have Nagel freeze his sperm at a clinic in case her first attempt at pregnancy is unsuccessful. After that, he’s off to Vietnam. “This crippled woman’s story really hit home,” he said of a 30-something left in a wheelchair after a debilitating motorcycle accident a few years ago. “She said, ‘It’s all I ever wanted.’ You just have a vibe that she’d be an amazing mom.” Plus, it will diversify his portfolio: “I don’t have an Asian baby yet.” In mid-July, a hopeful from Taiwan is flying in to New York to see if Nagel can make her dreams come true.

As The Post reported last year, the Sperminator often uses public restrooms — Target, Starbucks — for procuring samples: “Once a location is chosen, Nagel will go into the bathroom, pleasure himself while watching porn on his iPhone . . . and ejaculate into an Instead Softcup, a type of menstrual cup. He then delivers the specimen to the woman, who goes into the ladies’ restroom and inserts it into her cervix.”