time perl resolver.pl cnn.com
1: 64.236.24.12 (record type A)
2: 64.236.24.20 (record type A)
3: 64.236.24.28 (record type A)
4: 64.236.29.120 (record type A)
5: 64.236.16.20 (record type A)
6: 64.236.16.52 (record type A)
7: 64.236.16.84 (record type A)
8: 64.236.16.116 (record type A)

real    0m0.562s
user    0m0.320s
sys     0m0.010s