It looks like they dialed into a modem pool in Coupeville, WA.
Looks like. From the nomenclature it looks like an Ascend MAX TNT, which also does DSL, but if you experience repeats with a different address, then that suggests dial-up.
One other thing to keep in mind is that even though it is a UUNet port, it might be a resold port that is under another ISP's umbrella for services, authentication, etc.. So if you contacted UUNet and they referred you somewhere else, I wouldn't automatically take offense.
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Jim
'Tis the exceptional fellow who lies awake at night thinking of his successes.