All resolve to 23.137.248.133 for me.
This has been noted in comments: <>>37136514 > <>>37132089 > <>>37105936 >
As well as an earlier HN story submission: <>>37077049 >
As a practical upshot, as AT is the principle viable workaround for paywalled articles on HN, which means that HN is now left without a reliable option for such submissions. This becomes a policy issue for HN itself.