Postal sector IM99 1
- Douglas, Isle Of Man, IM99 1AD
- Douglas, Isle Of Man, IM99 1AG
- Douglas, Isle Of Man, IM99 1AH
- Douglas, Isle Of Man, IM99 1AJ
- Douglas, Isle Of Man, IM99 1AN
- Douglas, Isle Of Man, IM99 1BD
- Douglas, Isle Of Man, IM99 1DD
- Douglas, Isle Of Man, IM99 1DQ
- Douglas, Isle Of Man, IM99 1DT
- Isle Of Man, IM99 1FY
- Douglas, Isle Of Man, IM99 1HN
- Isle Of Man, IM99 1HP
- Douglas, Isle Of Man, IM99 1HX
- Isle Of Man, IM99 1NW
- Douglas, Isle Of Man, IM99 1PB
- Douglas, Isle Of Man, IM99 1PS
- Douglas, Isle Of Man, IM99 1QL
- Isle Of Man, IM99 1RZ
- Douglas, Isle Of Man, IM99 1SS
- Isle Of Man, IM99 1TT
- Douglas, Isle Of Man, IM99 1XJ