<Tr> <Th_colspan="9"> County Tyrone / Omagh </Th> </Tr> <Tr> <Th> JI </Th> <Td> 1 to 9999 </Td> <Td> Dec 1903--Feb 1944 </Td> <Td> 100 to 9999 </Td> <Td> Apr 1961--Oct 1964 </Td> <Td> 1 to 9998 </Td> <Td> Jun 1971--2000 </Td> </Tr> <Tr> <Th> HZ </Th> <Td> 1 to 9999 </Td> <Td> Feb 1944--Apr 1956 </Td> <Td> 200 to 9999 </Td> <Td> Oct 1964--Mar 1968 </Td> <Td> 1001 to 9998 </Td> <Td> 2000--current </Td> </Tr> <Tr> <Th> VZ </Th> <Td> 1 to 9999 </Td> <Td> Apr 1956--Apr 1961 </Td> <Td> 200 to 9999 </Td> <Td> Mar 1968--Jun 1971 </Td> </Tr>

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