DEAD DOMAINS — US MUNICIPAL WEBSITE REGISTRY ============================================ WHAT THIS IS 1650 domains drawn from the US federal registry of municipal websites that have NO DNS record. The name does not exist: the domain was not renewed and ceased to exist as an address. This is not "the site failed to load" and not "the server is down". A domain without a DNS record cannot serve anything at all. WHEN IT WAS MEASURED 2026-08-31 04:59:03 The previous snapshot (2026-08-30, 1208 domains out of a smaller sample) is kept alongside as dead-domains-2026-08-30.csv. Nothing was removed: a snapshot is evidence of its own moment. HOW IT WAS MEASURED A and AAAA records requested over DNS-over-HTTPS from two independent resolvers (Cloudflare and Google). A domain counts as dead only when BOTH return nothing. No request was sent to the sites themselves. SAMPLE 11 902 domains appearing in our accessibility crawl log, of which 10 252 exist and 1 650 do not (13.9%). The sample is not the entire federal registry. COLUMNS domain the domain name as it appears in the registry crawl_records how many records in our crawl log belong to it HOW TO VERIFY ANY LINE YOURSELF nslookup dig A or paste the name into any public DNS lookup service. The result reproduces independently of us. That was the point. LIMITATIONS - A missing A/AAAA record does not always mean abandonment: a domain may serve mail only (MX records) or be used internally. The share of such cases was not measured. - This is a snapshot of one moment. A domain may have been temporarily undelegated and later restored. - We did not check who currently owns these domains. FULL METHOD AND CONTEXT https://aifa.works/research/registry AUTHOR AND DISCLOSURE Maksim Valentinovich Galatin. The author provides website accessibility and security auditing services. This research is self-funded; nobody paid to be included in the sample or to influence the result.