[NewJerseyJoe]

Will try your recommendation a little later, as it meshes with the advice I got from my ISP's tech support. I sent a message, asking if the ISP is blocking websites. Reply came back "... not currently blocking any sites from being accessed. I am able to reach the site from my end. Are you using a router? It is possible that the router blocked access to the site. You may try bypassing that to see if it helps."

I think that would be kind of weird, considering that (A) I've accessed AR15.com before, and (B) this is the original router (Siemens Slipstream) that I got from my ISP when I signed up for DSL service!

[VeniVidiVici]

yeah, but routers can start going buggy.

At a minimum you should:

1. Turn off your computer
2. Turn off router
3. Turn off modem
4. Turn on modem - wait till it quits flashing
5. Turn on router - wait till you see it sync with the modem
6. Turn on/plug your computer into the router

Then try the sites again

[xmission]

try

tracert ar15.com

from an msdos box. It may show where it’s being dropped.