# Issuer Distinguished Name Matches records whose ssl.issuer_dn equals CN=YR2,O=Let's Encrypt,C=US. Source: https://docs.deepinfo.com/reference/discovery/domain-search/examples/ssl-issuer-dn/ Last updated: 2026-09-26 --- `POST https://api.deepinfo.com/v1/discovery/domain-search?page_size=25` Example 14 of 29 in **Filters › SSL** · [Domain Search Examples](/reference/discovery/domain-search/examples/) · endpoint: [Domain Search](/reference/discovery/domain-search/) Tags: `field` `ssl.issuer_dn` · `operator` `eq` Matches records whose `ssl.issuer_dn` equals `CN=YR2,O=Let's Encrypt,C=US`. The distinguished name is compared as one string, exactly as the response shows it. In the response, look at `results[].ssl.issuer_dn`. ## Request | Parameter | In | Value | |---|---|---| | `page_size` | query | `25` | | `filters.must[0].name` | body | `ssl.issuer_dn` | | `filters.must[0].type` | body | `eq` | | `filters.must[0].value` | body | `CN=YR2,O=Let's Encrypt,C=US` | ```bash curl -X POST 'https://api.deepinfo.com/v1/discovery/domain-search?page_size=25' \ -H 'apikey: YOUR_API_KEY' \ -H 'Accept: application/json' \ -H 'Content-Type: application/json' \ -d '{ "filters": { "must": [ { "name": "ssl.issuer_dn", "type": "eq", "value": "CN=YR2,O=Let'\''s Encrypt,C=US" } ] } }' ``` ## Response ### 200 · OK > Shortened for this page: results: 3 of 25 shown `Content-Type: application/json` · `ratelimit-limit: 1000` · `ratelimit-remaining: 999` · `ratelimit-reset: 1` · `x-ratelimit-limit-hour: 100000` · `x-ratelimit-limit-minute: 10000` · `x-ratelimit-limit-second: 1000` · `x-ratelimit-remaining-hour: 99906` · `x-ratelimit-remaining-minute: 9979` · `x-ratelimit-remaining-second: 999` · `deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a` ```json { "page": 1, "page_size": 25, "result_count": 88413851, "results": [ { "punycode": "webmail.volantinocertificato.it", "unicode": "webmail.volantinocertificato.it", "is_idn": false, "subdomain": { "punycode": "webmail", "unicode": "webmail", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 7 }, "subdomain_last": { "punycode": "webmail", "unicode": "webmail", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 7 }, "subdomain_root": { "punycode": "webmail", "unicode": "webmail", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 7 }, "name": { "punycode": "webmail.volantinocertificato", "unicode": "webmail.volantinocertificato", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, 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"organization": "d. & v. international s.r.l.", "street": null, "city": null, "state": null, "postal_code": null, "country": null, "phone": null, "email": null }, "name_servers": [ "heisenberg.flamedns.host", "pinkman.flamedns.host" ], "domain_status": [ "ok" ], "whois_server": null, "check_date": "2026-09-01T08:45:13Z" }, "whois_normalized": { "registrant": { "organization": "REDACTED FOR PRIVACY", "phone": null, "email": null, "email_fqdn_apex": null, "email_domain_apex": null } }, "whois_last_check_date": "2026-09-01T08:45:13Z", "whois_create_date_historical": null, "whois_last_change_date": "2026-01-11T13:14:33Z", "whois_registrant_email_historical": null, "whois_privacy_enabled": true, "dns": { "a": { "update_date": "2026-08-28T15:33:54Z", "ip_addresses": [ "159.195.65.206" ] } }, "dns_last_change_date": "2026-05-23T12:10:51Z", "ip_history": null, "ssl": { "validity": { "start_date": "2026-08-03T10:10:54Z", "end_date": "2026-11-01T10:10:53Z" }, "serial_number": 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"punycode": "webdisk.rooftekltd.co.uk", "unicode": "webdisk.rooftekltd.co.uk", "is_idn": false, "subdomain": { "punycode": "webdisk", "unicode": "webdisk", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 7 }, "subdomain_last": { "punycode": "webdisk", "unicode": "webdisk", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 7 }, "subdomain_root": { "punycode": "webdisk", "unicode": "webdisk", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 7 }, "name": { "punycode": "webdisk.rooftekltd", "unicode": "webdisk.rooftekltd", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 17, "lang": "en", "keywords": [ "web", "disk", "roof", "tek", "ltd" ], "keyword_count": 5, "latinized": [], "contains_confusable": false }, "domain": { "punycode": "rooftekltd.co.uk", "unicode": 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"2026-09-02T06:10:18Z", "ip_addresses": [ "178.162.234.23" ] }, "aaaa": { "update_date": "2026-09-02T06:10:18Z", "ip_addresses": [] }, "ns": { "update_date": "2026-09-02T06:10:18Z", "name_servers": [] }, "mx": { "update_date": "2026-09-02T06:10:18Z", "mail_servers": [] }, "soa": { "update_date": "2026-09-02T06:10:18Z", "mnames": [], "rnames": [], "rname_emails": [] }, "txt": { "update_date": "2026-09-02T06:10:18Z", "values": [] }, "cname": { "update_date": "2026-09-02T06:10:18Z", "values": [] }, "others": [] }, "dns_last_change_date": "2026-09-03T14:23:41Z", "ip_history": [ "142.132.134.47", "217.20.124.84", "178.162.234.23" ], "ssl": { "tags": [ "dla" ], "fqdns": [ "nobo.co.ke", "nobo.co.ke.gathigafresh.co.ke", "www.nobo.co.ke.gathigafresh.co.ke" ], "version": 3, "serial_number": "512963476637197447285518747086616009567724", "fingerprint": { "sha256": "b728c234dfa16e73338c03d514285dc9c7127dfa54bbcf149e092260a406ad66", "sha1": "65ad09798ef2e3fe222c3e4706357089fc351fce", "md5": 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null, "organizational_unit": null }, "extensions": { "authority_key_id": "QBUtJnntMiCe35pyHdYyH4EMgQw=", "basic_constraints": { "is_ca": false }, "certificate_policies": [ "2.23.140.1.2.1" ], "extended_key_usage": { "client_auth": null, "server_auth": true }, "key_usage": { "digital_signature": true, "content_commitment": false, "key_agreement": false, "data_encipherment": false, "key_encipherment": true, "key_cert_sign": false, "crl_sign": false }, "signed_certificate_timestamps": [ "2026-07-09T10:03:08Z", "2026-07-09T10:03:07Z" ], "subject_alt_name": { "dns_names": [ "*.nobo.co.ke", "nobo.co.ke", "nobo.co.ke.gathigafresh.co.ke", "www.nobo.co.ke.gathigafresh.co.ke" ] }, "subject_key_id": "+qP7+3j8Kv+IIh3uesE7EkWBwhA=" }, "check_date": "2026-08-04T02:36:58Z" }, "ssl_last_change_date": "2026-08-02T20:20:30Z", "webdata": { "connection_status": "success", "html": { "source_code_hash": "4304c9c73f8745cdd8ee4b65704bda828309972f1c2156cbb97d6d177487a267" }, "http": { "status_code_first": 200, "status_code_last": 200, "redirection_history": [ { "url": "http://autoconfig.nobo.co.ke/", "status_code": 200 } ], "external_redirection": null, "final_url": "http://autoconfig.nobo.co.ke/", "final_fqdn": "autoconfig.nobo.co.ke", "final_domain": "nobo.co.ke", "headers": { "others": [ { "name": "connection", "value": "Keep-Alive" }, { "name": "keep_alive", "value": "timeout=5, max=100" }, { "name": "vary", "value": "Accept-Encoding" }, { "name": "x_turbo_charged_by", "value": "LiteSpeed" }, { "name": "transfer_encoding", "value": "chunked" }, { "name": "date", "value": "Mon, 07 Jul 2025 02:20:24 GMT" } ], "access_control_allow_headers": null, "access_control_allow_methods": null, "access_control_allow_origin": null, "cache_control": null, "clear_site_data": null, "content_encoding": "gzip", "content_security_policy": null, "content_type": "application/xml", "cross_origin_embedder_policy": null, "cross_origin_opener_policy": null, "cross_origin_resource_policy": null, "expect_ct": null, "feature_policy": null, "last_modified": null, "permission_policy": null, "referrer_policy": null, "server": "LiteSpeed", "set_cookie": null, "strict_transport_security": null, "x_content_type_options": null, "x_download_options": null, "x_frame_options": null, "x_permitted_cross_domain_policies": null, "x_powered_by": null, "x_xss_protection": null }, "cookies": [] } } } ] } ``` ## Related Examples - [Issuer Common Name](/reference/discovery/domain-search/examples/ssl-issuer-common-name/) - [Certificates With a Valid Signature](/reference/discovery/domain-search/examples/ssl-signature-is-valid/) - [Issuer Country](/reference/discovery/domain-search/examples/ssl-issuer-country/) - [Self-Signed Certificates](/reference/discovery/domain-search/examples/ssl-signature-is-self-signed/) - [Issuer State](/reference/discovery/domain-search/examples/ssl-issuer-state/) - [Issuer Locality](/reference/discovery/domain-search/examples/ssl-issuer-locality/)