VLSM subnetting

Hi. I have done the following VLSM subnetting. Could someone tell me is this correct or not? Thanks so much. For helping me out.

VLSM for the folowing requirements.
LAN1 - 100 hosts
LAN2 - 8000 hosts
LAN3 - 700 hosts
LAN4 - 7000 hosts
serials 2 subnets 4 hosts each

IP address 155.5.0.0/16

Answer:

For LAN2 - 8000 hosts
Sub-networks
155.5.0.0/19
155.5.32.0/19
155.5.64.0/19
155.5.96.0/19
155.5.128.0/19
155.5.160.0/19
155.5.192.0/19
155.5.224.0/19

For 8000 hosts
155.5.0.0/19(Network Address)
155.5.0.1 to 155.5.31.254
155.5.31.255(Broadcast Address)

For LAN4 - 7000 hosts
Sub-networks
155.5.32.0/19
155.5.64.0/19
....................

For 7000 hosts
155.5.32.0/19(Network Address)
155.5.32.1 to 155.5.63.254
155.5.63.255(Broadcast Address)


For LAN3 - 700 hosts
Sub-networks
155.5.64.0/22
155.5.68.0/22
....................

For 700 hosts
155.5.64.0/22(Network Address)
155.5.64.1 to 155.5.67.254
155.5.67.255(Broadcast Address)


For LAN1 - 100 hosts
Sub-networks
155.5.68.0/25
155.5.68.128/25
.......................

For 100 hosts
155.5.68.0/25(Network Address)
155.5.68.1 to 155.5.68.126
155.5.68.127(Broadcast Address)


For serial0 4 hosts
Sub-networks
155.5.68.128/30
155.5.68.132/30
.......................

For 4hosts
155.5.68.128/30(Network Address)
155.5.68.129 to 155.5.68.130
155.5.68.131(Broadcast Address)

For serial1 4 hosts
Sub-networks
155.5.68.132/30
155.5.68.136/30
.......................

For 4hosts
155.5.68.132/30(Network Address)
155.5.68.133 to 155.5.68.134
155.5.68.135(Broadcast Address)