{"index":"sdsi","version":1,"effective_from":"2026-09-05","description":"SDSI v1. For each system of the census and each of three axes (the site, the mail exchangers, the\nauthoritative name servers), every address is resolved on a named public resolver and attributed to\nthe network announcing it. An axis is national when every address it resolved is announced by a\nnetwork the regional registry records under the market\u0027s own country, foreign when none is,\nintermediary when at least one belongs to a published anycast frontal, and mixed when both sides\nappear without a frontal. An axis whose resolver answered that there is nothing there is absent, and\none nothing could be established about is unknown; neither enters the published shares, and the\ncoverage figure says how large the base of those shares is inside the census.","params":{"unit":"system","axes":["web","mail","dns"],"national_country":"the market\u0027s own ISO 3166-1 alpha-2 code, matched against the country the regional registry records the announcing AS under","resolver":"https:\/\/cloudflare-dns.com\/dns-query (1.1.1.1), DNS over HTTPS","origin_source":"Team Cymru origin.asn.cymru.com and origin6.asn.cymru.com, most specific prefix wins","verdicts":["national","foreign","intermediary","mixed","absent","unknown"],"base":"the systems whose axis places a hosting: national, foreign, intermediary or mixed","anycast_fronts":[13335,21342,63949,23393]},"published_at":"2026-09-05T00:00:00Z"}