WRT54G: cannot access IP addresses a particular range of the internet

We have a WRT54G (material v6) we have used for some years, in conjunction with a modem cable to create a home wifi network. In recent days, we have been unable to access sites in the 130.160.x.x IP range (i.e. those at the University of Alabama). A particular example is ua.edu (130.160.4.131). The rest of the internet works fine.

It's on Ubuntu 12.04, Windows 7 or Android ICS; with Chrome, Firefox, IE9, or SSH. If I connect the modem to a laptop Ubuntu directly by USB, I can get to ua.edu very well.

I tried to reset the default router, update the firmware, connection via ethernet instead of wifi and use the servers Google's DNS 8.8.8.8 and 8.8.4.4 in the router, but the problem persists. Naturally, au helpdesk, Comcast and Linksys were all useless, helpless, or uncooporative.

Traceroute looks like this:

tsbertalan@hustlenbustle:~$ traceroute ua.edu
traceroute to ua.edu (130.160.4.131), 30 hops max, 60 byte packets
1 192.168.1.1 (192.168.1.1) 2,972 10,518 10,979 ms ms ms
2 * * *
3 you-9-3 - sr02.gadsden.al.tusca.comcast .net (68.85.205.121) Mrs. 21,529 Ms. 22,001 Ms. 22,432
4 you-7-3 - ar02.huntsville.al.hunts.comcast .net (68.85.205.57) 23,350 32,048 32,432 ms ms ms
5 xe-5-1-0-0-ar01.b0atlanta.ga.atlanta.comcast.net (68.85.109.221) Mrs. 34,972 Ms. 35,433 Ms. 36,119
6 pos-3-5-0-0-cr01.atlanta.ga.ibone.comcast.net (68.86.93.125) 37,672 23,108 (68.86.93.201) pos-3-6-0-0-cr01.atlanta.ga.ibone.comcast.net MS MS ms 22,178
7 pos-0-3-0-0-pe01.56marietta.ga.ibone.comcast.net (68.86.87.134) 25,761 26,809 26,300 ms ms ms
8 * te4 - 2.ccr01.atl02.atlas.cogentco.com (154.54.10.233) ms 132,485
9 te0-2-0 - 5.mpd22.atl01.atlas.cogentco.com (154.54.83.209) 29.493 ms te0-3-0 - 3.ccr21.atl01.atlas.cogentco.com (154.54.83.181) 28.450 ms te0-2-0 - 5.mpd22.atl01.atlas.cogentco.com (154.54.83.209) ms 28,892
10 te3-(154.54.82.114) 2.ccr01.atl04.atlas.cogentco.com ms 191,126 te9 - 2.ccr01.atl04.atlas.cogentco.com (154.54.82.122) 192,406 te3-(154.54.82.118) 1.ccr01.atl04.atlas.cogentco.com ms 191,817 ms
11 38.104.182.10 (38.104.182.10) Mrs. Ms. 35,561 Ms. 36,035 34,520
12 *.
13. *
14 *.
15. *
16. *
17. *
18. *
19. *
20 *.
21. *
22. *
23. *
24 *.
25 *.
26. *
27. *
28. *
29. *
30. *
tsbertalan@hustlenbustle:~$

Any ideas?

I could probably just pick up a cheap router and see if it works instead of investing too much time on it. It would be the best way to isolate.

You can choose a refurb out of the store pretty cheap linksys router. It is never a bad idea to have a backup router anyway.

I'm going to you humour with my last guess apart from the FBI or the NSA. A member of your family or a neighbor's an auburn fan and they consulted your router GUI and blocked the site using parental controls. That's my final guess.

Tags: Linksys Routers

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