custom size PTR zones

[szrobag2020]

Request for help using phpIPAM / Misc question?
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I use phpIPAM integrated PowerDNS backend as DNS service. There are a lot of 10.x.x.x subnet in IPAM i need to merge into one 10.in-addr.arpa PTR zone. If use auto PTR record generation how can force not to create smaller, separate 11.10.in-addr.arpa, 12.10.in-addr.arpa.. and so on.. files?