This reminds me of writing a bit to catch the BT SIN Supplier Information Notes ephemeral notices: BT and later OpenReach were required by law to advertise every sweetheart deal to all comers on this domain. This might take place for only long enough for the page to come and go from the google cache (which BT had some way of automating content exclusion from, the cache page link in search results leading to a 404 was a dirty little trick to claim the advertising and universal offering components of statutes, which didn't last long for a ruse because the entire uk industry seemed to automatically file in court to obtain even the simplest of provisions, I know we weren't alone) anyway that was how we discovered BT would lease twisted copper pairs from CPE to exchange and you could hop onto commercial backhaul from there, so we had 4 wire SHDSL modems either end and the tent was a enormous £495pq British pounds or about $3kpa for a symmetric 10Mb/s last mile to clec