This is the command ldns-zcat that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
ldns-zcat - reunite (z)split up a zone files
ldns-zcat will read in a bunch of (z)split up zonefiles and creates a new larger zone
file. The SOA record in the first part is used as the SOA record in the generated zone.
The resulted zone file is printed to standard output.
use ORIGIN when reading in the zone
-v show the version number and exit
Use ldns-zcat online using onworks.net services