Christopher Wilder, 36, dodged paying the outstanding bill by faking fingerprints – claiming he was not the child’s father.
Fraud officers used the criminal database to check the genetic evidence and found he was the biological dad.
Wilder had arranged for Thomas Mann to take a DNA test to prove he wasn’t the child’s dad, according to The Sun on Sunday.
But an investigation was launched after the mum gave a sworn statement that Wilder was the dad.
Photo ID provided at the test proved Wilder had used an impersonator.
Investigators used the criminal database to check genetic fingerprints and cross-referenced to the police DNA database to identify Mann.
He had avoided paying child support for five years.
The new measures to check police records were introduced last September.
“We won’t hesitate to use all the powers we have to bring fraudsters to justice”
Minister for Family Support, Housing and Child Maintenance
Cops grilled both men who pleaded guilty in March to conspiracy to defraud a mother and child of maintenance payments.
Wilder only got two years in prison while Mann got a suspended sentence.
Minister for Family Support, Housing and Child Maintenance Caroline Dinenage said: “The vast majority of parents who separate work together in the best interests of their children.
“But when the small minority try to cheat the system – and deny their children the support they need – we won’t hesitate to use all the powers we have to bring them to justice.”
Adults convicted of a serious offence have their DNA profiles retained indefinitely.
Those arrested but with no conviction can have their records kept for up to 12 years.
There are around 5 million profiles on the national database.
The DNA powers also sit alongside measures to deduct money direct from earnings and savings from those who avoid supporting their families.