Iam able to logon from other networks like BT,freeserve .
Even it did work for my friend in London who has got NTL .
I believe it's the Local NTL's DNS server not been updated .The trace in your reply seems to look good .Iam attaching mine again .
From the 14 th HOP it's blank
1 4 ms 9 ms 9 ms 216.26.129.91 [
www.DNSstuff.com 1st hop]
2 2 ms 5 ms 5 ms 216.26.128.181 edge-rtr02.ge-0-3-0.sdf.xodiax.net.
3 14 ms 245 ms 700 ms 65.117.168.137 chi-edge-09.inet.qwest.net.
4 10 ms 16 ms 15 ms 205.171.20.121 chi-core-01.inet.qwest.net.
5 52 ms 41 ms 62 ms 205.171.20.170 chi-core-02.inet.qwest.net.
6 12 ms 15 ms 15 ms 205.171.205.34 cer-core-01.inet.qwest.net.
7 11 ms 14 ms 14 ms 205.171.139.146 chp-brdr-01.inet.qwest.net.
8 10 ms 12 ms 12 ms 205.171.4.14 [Missing reverse DNS entry]
9 10 ms 13 ms 13 ms 152.63.73.21 0.so-5-0-0.XL2.CHI13.ALTER.NET.
10 22 ms 13 ms 22 ms 152.63.68.89 0.so-0-0-0.TL2.CHI2.ALTER.NET.
11 35 ms 43 ms 52 ms 152.63.1.177 0.so-2-3-0.TL2.NYC8.ALTER.NET.
12 94 ms 225 ms 139 ms 152.63.16.37 0.so-2-0-0.CL2.EWR6.ALTER.NET.
13 40 ms 70 ms 78 ms 152.63.28.49 POS7-0.GW2.EWR17.ALTER.NET.
14 * * *
15 * * *
16 * * *
17 37 ms 53 ms 63 ms 69.72.137.162
[Reached Destination]server5.24hostingnow.com. 50 UNITED STATES