traceroute to afrihost.co.za (197.242.144.102), 64 hops max, 52 byte packets
1 192.168.0.1 (192.168.0.1) 1.094 ms 1.027 ms 0.989 ms
2 105-236-0-129-esr-lo.mtnbusiness.co.za (105.236.0.129) 218.361 ms 93.374 ms 232.274 ms
3 41.181.222.42 (41.181.222.42) 161.384 ms 306.780 ms 307.141 ms
4 ng-mse-1--ng-cr-1-a.za.mtnns.net (196.44.27.68) 322.214 ms 116.114 ms 99.677 ms
5 jh-cr-1.za--ng-cr-1.za.mtnns.net (196.44.31.176) 146.480 ms * 151.681 ms
6 rb-cr-2.za--jh-cr-1.za.mtnns.net (196.44.0.43) 130.090 ms 101.438 ms 109.324 ms
7 qux--rb-dca-2.za-b.za.mtnbusiness.net (41.181.165.119) 115.677 ms 111.671 ms 175.557 ms
8 196.31.220.10 (196.31.220.10) 142.050 ms 139.537 ms
196.30.1.53 (196.30.1.53) 140.408 ms
9 196.31.220.21 (196.31.220.21) 112.792 ms
196.31.220.25 (196.31.220.25) 106.450 ms 133.424 ms
10 196.31.63.202 (196.31.63.202) 255.946 ms 128.104 ms
196.31.63.206 (196.31.63.206) 159.734 ms
11 196.30.42.133 (196.30.42.133) 170.076 ms 374.264 ms 328.245 ms
12 cms-gm.afrihost.com (197.242.144.102) 286.112 ms !Z 193.697 ms !Z 149.549 ms !Z
Results do look like an exchange congestion here, the 2nd hop (your exchange) generally shouldn't spike over 30ms. You say you see the same latency on the Telkom guest account?