generated: '2026-09-06' method: probed source: live DNS/TLS/HTTP probes of the apis.yml Website host plus Acadia's own registrable domains (acadia.inc, acadiasoft.com) and the live customer portal host note: 'Acadia''s own domain acadia.inc still resolves and terminates TLS but serves only a blanket 301 to www.lseg.com; acadiasoft.com no longer resolves at the apex. The DMARC aggregate/forensic mailboxes on BOTH Acadia domains are @lseg.com, which is independent confirmation that LSEG now operates the mail and DNS estate.' hosts: - host: www.lseg.com https: true tls_version: TLSv1.3 cert_expires: Apr 6 23:59:59 2027 GMT hsts: true hsts_max_age: 63072000 - host: acadia.inc https: true tls_version: TLSv1.3 cert_issuer: Google Trust Services WE1 cert_expires: Oct 23 00:18:58 2026 GMT hsts: true hsts_max_age: 31536000 hsts_include_subdomains: true note: serves HTTP 301 to https://www.lseg.com/en/post-trade/solutions/acadia for every path probed, including all /.well-known/* paths - host: portal.acadiasoft.com https: true tls_version: TLSv1.2 cert_issuer: Sectigo Public Server Authentication CA OV R36 cert_expires: Apr 6 23:59:59 2027 GMT hsts: true hsts_max_age: 31536000 hsts_include_subdomains: true note: Atlassian Confluence customer documentation portal; 302s every anonymous request to an OAuth2 authorization endpoint (realm=docportal) domains: - domain: lseg.com dnssec: true caa: [] spf: true dmarc: true dmarc_policy: reject - domain: acadia.inc dnssec: true caa: [] spf: true dmarc: true dmarc_policy: reject dmarc_rua: rua@lseg.com - domain: acadiasoft.com dnssec: false caa: [] spf: true dmarc: true dmarc_policy: reject dmarc_rua: rua@lseg.com note: apex has no A record; only portal.acadiasoft.com still resolves