UK Proxies

The UK sits in the catalogue's largest scale band, which creates room to sample more than one exit but is not a request-rate allowance or a promise that every address is online. Split authorized work by source and question, keep one domain-level request budget across sessions, and monitor valid-response rate. Pool depth does not authorize collection: terms, robots guidance, contracts, authentication boundaries, rate controls, and applicable law still govern. Treat a block, CAPTCHA, quota, or denial as a stop or review signal across the whole UK pool, and record failures instead of hiding them with retries.

The next larger European catalogue entry is Spain at 1,238,826 addresses, and the next smaller is Germany at 1,162,084. Italy leads the region at 1,299,820. These comparisons describe catalogue capacity only. Choose a UK route when the research question needs a UK network-origin observation; choose another country only as a valid control or separate market. Do not merge country observations without labeling them, because regional differences then become impossible to interpret. Preserve the requested route, observed exit country, network type, timestamp, source, response class, and validation outcome.

Before using a UK result, capture the canonical source and permission basis; Databay network and countryCode-gb setting; observed exit IP, ASN, and geolocation source; browser, account, language, currency, address, cookie, and device state; and UTC timestamp with response evidence. Repeat the check from a controlled reference and label missing, blocked, challenged, stale, or personalized responses. For consequential decisions, obtain a second authorized source or local review. This preserves the distinction between catalogue capacity and a verified user or resident experience.