# Wildcard Certificates by Subject DN Matches records whose ssl.subject_dn starts with CN=*.. Source: https://docs.deepinfo.com/reference/discovery/domain-search/examples/ssl-subject-dn/ Last updated: 2026-09-26 --- `POST https://api.deepinfo.com/v1/discovery/domain-search?page_size=25` Example 21 of 29 in **Filters › SSL** · [Domain Search Examples](/reference/discovery/domain-search/examples/) · endpoint: [Domain Search](/reference/discovery/domain-search/) Tags: `field` `ssl.subject_dn` · `operator` `startswith` Matches records whose `ssl.subject_dn` starts with `CN=*.`. A subject DN that starts with `CN=*.` belongs to a wildcard certificate. In the response, look at `results[].ssl.subject_dn`. ## Request | Parameter | In | Value | |---|---|---| | `page_size` | query | `25` | | `filters.must[0].name` | body | `ssl.subject_dn` | | `filters.must[0].type` | body | `startswith` | | `filters.must[0].value` | body | `CN=*.` | ```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.subject_dn", "type": "startswith", "value": "CN=*." } ] } }' ``` ## 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: 99899` · `x-ratelimit-remaining-minute: 9993` · `x-ratelimit-remaining-second: 999` · `deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a` ```json { "page": 1, "page_size": 25, "result_count": 150743550, "results": [ { "punycode": "reiber-schreinerei.de", "unicode": "reiber-schreinerei.de", "is_idn": false, "subdomain": null, "subdomain_last": null, "subdomain_root": null, "name": { "punycode": "reiber-schreinerei", "unicode": "reiber-schreinerei", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": true, "length": 18, "lang": "de", "keywords": [ "reiber", "schreinerei" ], "keyword_count": 2, "latinized": [], "contains_confusable": false }, "domain": { "punycode": "reiber-schreinerei.de", "unicode": "reiber-schreinerei.de", "is_idn": false, "name": { "punycode": "reiber-schreinerei", "unicode": "reiber-schreinerei", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": true, "length": 18, "lang": "de", "keywords": [ "reiber", "schreinerei" ], "keyword_count": 2 }, "extension": { "punycode": "de", "unicode": "de", "is_idn": false }, "extension_root": { "punycode": "de", "unicode": "de", "is_idn": false }, "extension_sub": null, "extension_type": 2, "reserved": null, "premium": null, "registered": true, "whois": { "create_date": null, "update_date": "2020-09-07T11:22:57Z", "expiry_date": null, "registrar": null, "registrant": { "name": null, "organization": null, "street": null, "city": null, "state": null, "postal_code": null, "country": null, "phone": null, "email": null }, "name_servers": [ "ns3.ai-dns.de", "ns5.kasserver.com", "ns5.name-server-kas.de", "ns6.kasserver.com" ], "domain_status": [ "connect" ], "whois_server": null, "check_date": "2026-07-20T14:09:18Z" }, "whois_normalized": { "registrant": null }, "whois_last_check_date": "2026-07-20T14:09:18Z", "whois_create_date_historical": [], "whois_last_change_date": null, "whois_registrant_email_historical": [], "whois_privacy_enabled": null, "dns": { "a": { "update_date": "2026-09-03T16:35:21Z", "ip_addresses": [ "85.13.161.47" ] } }, "dns_last_change_date": "2026-09-03T16:35:27Z", "ip_history": [ "85.13.161.47" ], "ssl": { "validity": { "start_date": "2025-12-04T00:00:00Z", "end_date": "2027-01-04T23:59:59Z" }, "serial_number": "317195471285221077770134240717494399807", "check_date": "2026-08-11T07:27:21Z" }, "ssl_last_change_date": "2026-01-19T22:58:00Z" }, "type": 1, "subdomain_level_count": 0, "dns": { "a": { "update_date": "2026-09-03T16:35:21Z", "ip_addresses": [ "85.13.161.47" ] }, "aaaa": { "update_date": "2026-09-03T16:35:21Z", "ip_addresses": [] }, "ns": { "update_date": "2026-09-03T16:35:21Z", "name_servers": [ "ns3.ai-dns.de", "ns5.kasserver.com", "ns5.name-server-kas.de", "ns6.kasserver.com" ] }, "mx": { "update_date": "2026-09-03T16:35:21Z", "mail_servers": [ "w0176a57.kasserver.com" ] }, "soa": { "update_date": "2026-09-03T16:35:21Z", "mnames": [ "ns5.kasserver.com" ], "rnames": [ "hostmaster.kasserver.com" ], "rname_emails": [ "user@kasserver.com" ] }, "txt": { "update_date": "2026-09-03T16:35:21Z", "values": [ "\"v=spf1 a mx include:spf.kasserver.com ~all\"" ] }, "cname": { "update_date": "2026-09-03T16:35:21Z", "values": [] }, "others": [] }, "dns_last_change_date": "2026-09-03T16:35:27Z", "ip_history": [ "85.13.161.47" ], "ssl": { "tags": [ "dla" ], "fqdns": [ "kasserver.com" ], "version": 3, "serial_number": "317195471285221077770134240717494399807", "fingerprint": { "sha256": "b5d3da253cbb3253028a6428ed66712eee4abdd9c31463ccc464889085f4168b", "sha1": "20b933213a2fa939b9d8ca1aac07b319715cb2ac", "md5": "e5cc5a62a853408f3e5bf2875c1283a7" }, "validity": { "start_date": "2025-12-04T00:00:00Z", "end_date": "2027-01-04T23:59:59Z", "length": 34300799 }, "signature": { "is_self_signed": false, "is_valid": false, "value": "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", "algorithm": { "oid": "1.2.840.113549.1.1.11", "name": "sha256" } }, "issuer_dn": "CN=Sectigo Public Server Authentication CA DV R36,O=Sectigo Limited,C=GB", "issuer": { "common_name": "Sectigo Public Server Authentication CA DV R36", "country": "GB", "state": null, "locality": null, "organization": "Sectigo Limited", "organizational_unit": null }, "subject_dn": "CN=*.kasserver.com", "subject": { "common_name": "*.kasserver.com", "country": null, "state": null, "locality": null, "organization": null, "organizational_unit": null }, "extensions": { "authority_key_id": "aMASFhgOr872h6YyV6NGUV3LByc=", "basic_constraints": { "is_ca": false }, "certificate_policies": [ "1.3.6.1.4.1.6449.1.2.2.7", "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": [ "2025-12-04T10:48:45Z", "2025-12-04T10:48:46Z" ], "subject_alt_name": { "dns_names": [ "*.kasserver.com", "kasserver.com" ] }, "subject_key_id": "LOgkkb5w5gk/5C9zPisFzz+cNiA=" }, "check_date": "2026-08-11T07:27:21Z" }, "ssl_last_change_date": "2026-01-19T22:57:57Z", "webdata": { "connection_status": "success", "html": { "source_code_hash": "d0ff221705793c5ec26742d3ef0d91958f4c3e33f6b17d1b87f7dc09de2fc8b6" }, "http": { "status_code_first": 200, "status_code_last": 200, "redirection_history": [ { "url": "http://reiber-schreinerei.de/", "status_code": 200 } ], "external_redirection": null, "final_url": "http://reiber-schreinerei.de/", "final_fqdn": "reiber-schreinerei.de", "final_domain": "reiber-schreinerei.de", "headers": { "others": [ { "name": "date", "value": "Mon, 23 Feb 2026 08:26:27 GMT" }, { "name": "upgrade", "value": "h2,h2c" }, { "name": "connection", "value": "Upgrade, Keep-Alive" }, { "name": "etag", "value": "\"44f-55ae9e54e91b4-gzip\"" }, { "name": "accept_ranges", "value": "bytes" }, { "name": "vary", "value": "Accept-Encoding,User-Agent" }, { "name": "content_length", "value": "648" }, { "name": "keep_alive", "value": "timeout=2, max=1000" } ], "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": "text/html", "cross_origin_embedder_policy": null, "cross_origin_opener_policy": null, "cross_origin_resource_policy": null, "expect_ct": null, "feature_policy": null, "last_modified": "Sat, 07 Oct 2017 00:18:24 GMT", "permission_policy": null, "referrer_policy": null, "server": "Apache", "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": [] } } }, { "punycode": "anwalt-wiesbaden-familienrecht.de", "unicode": "anwalt-wiesbaden-familienrecht.de", "is_idn": false, "subdomain": null, "subdomain_last": null, "subdomain_root": null, "name": { "punycode": "anwalt-wiesbaden-familienrecht", "unicode": "anwalt-wiesbaden-familienrecht", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": true, "length": 30, "lang": "pt", "keywords": [ "anwalt", "wiesbaden", "familienrecht" ], "keyword_count": 3, "latinized": [], "contains_confusable": false }, "domain": { "punycode": "anwalt-wiesbaden-familienrecht.de", "unicode": "anwalt-wiesbaden-familienrecht.de", "is_idn": false, "name": { "punycode": "anwalt-wiesbaden-familienrecht", "unicode": "anwalt-wiesbaden-familienrecht", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": true, "length": 30, "lang": "pt", "keywords": [ "anwalt", "wiesbaden", "familienrecht" ], "keyword_count": 3 }, "extension": { "punycode": "de", "unicode": "de", "is_idn": false }, "extension_root": { "punycode": "de", "unicode": "de", "is_idn": false }, "extension_sub": null, "extension_type": 2, "reserved": null, "premium": null, "registered": true, "whois": { "create_date": null, "update_date": "2025-06-02T13:10:22Z", "expiry_date": null, "registrar": null, "registrant": { "name": null, "organization": null, "street": null, "city": null, "state": null, "postal_code": null, "country": null, "phone": null, "email": null }, "name_servers": [ 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"2026-08-13T03:29:44Z", "mail_servers": [ "mx00.ionos.de", "mx01.ionos.de" ] }, "soa": { "update_date": "2026-08-13T03:29:44Z", "mnames": [ "ns1067.ui-dns.biz" ], "rnames": [ "hostmaster.1und1.com" ], "rname_emails": [ "user@1und1.com" ] }, "txt": { "update_date": "2026-08-13T03:29:44Z", "values": [ "\"t3kprv3lhp9q99jtc5p0z2yw0j2t5hbv\"", "\"v=spf1 include:_spf-eu.ionos.com ~all\"" ] }, "cname": { "update_date": "2026-08-13T03:29:44Z", "values": [] }, "others": [] }, "dns_last_change_date": "2026-05-12T21:26:45Z", "ip_history": [ "217.160.0.155" ], "ssl": { "tags": [ "dla" ], "fqdns": [ "zeitlos-bw.de" ], "version": 3, "serial_number": "253252943435331182786811484665393325838", "fingerprint": { "sha256": "85fcf1f187396a4dae34c16ff5a4ab33a4a52ed259c7aaddfd18f282b2c29733", "sha1": "78bb32369fd17fc429ab6a774d8c907bfcb8c2ae", "md5": "57d046756f1533619d6df702f718aa59" }, "validity": { "start_date": "2025-11-09T00:00:00Z", "end_date": "2026-11-23T23:59:59Z", "length": 32831999 }, "signature": { "is_self_signed": false, "is_valid": true, "value": "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", "algorithm": { "oid": "1.2.840.113549.1.1.11", "name": "sha256" } }, "issuer_dn": "CN=Sectigo Public Server Authentication CA DV R36,O=Sectigo Limited,C=GB", "issuer": { "common_name": "Sectigo Public Server Authentication CA DV R36", "country": "GB", "state": null, "locality": null, "organization": "Sectigo Limited", "organizational_unit": null }, "subject_dn": "CN=*.zeitlos-bw.de", "subject": { "common_name": "*.zeitlos-bw.de", "country": null, "state": null, "locality": null, "organization": null, "organizational_unit": null }, "extensions": { "authority_key_id": "aMASFhgOr872h6YyV6NGUV3LByc=", "basic_constraints": { "is_ca": false }, "certificate_policies": [ "1.3.6.1.4.1.6449.1.2.2.7", "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": [ "2025-11-09T04:27:18Z" ], "subject_alt_name": { "dns_names": [ "*.zeitlos-bw.de", "zeitlos-bw.de" ] }, "subject_key_id": "Mp2G5OOLFkZhiQfjPuoT8CjkMlI=" }, "check_date": "2025-11-21T17:05:04Z" }, "ssl_last_change_date": "2025-11-19T18:04:27Z", "webdata": { "connection_status": "success", "html": { "source_code_hash": "6c6da6e2295c38723cf5cba27249b3680dc07e2544329c60098ebec0e40266df" }, "http": { "status_code_first": 301, "status_code_last": 200, "redirection_history": [ { "url": "http://zeitlos-bw.de/", "status_code": 301 }, { "url": "https://zeitlos-bw.de/", "status_code": 200 } ], "external_redirection": false, "final_url": "https://zeitlos-bw.de/", "final_fqdn": "zeitlos-bw.de", "final_domain": "zeitlos-bw.de", "headers": { "others": [ { "name": "transfer_encoding", "value": "chunked" }, { "name": "connection", "value": "keep-alive" }, { "name": "x_ws_origin", "value": "available" }, { "name": "x_ws_ratelimit_limit", "value": "1000" }, { "name": "x_ws_ratelimit_remaining", "value": "999" }, { "name": "date", "value": "Sat, 23 May 2026 01:32:51 GMT" }, { "name": "permissions_policy", "value": "private-state-token-redemption=(self \"https://www.google.com\" \"https://www.gstatic.com\" \"https://recaptcha.net\" \"https://challenges.cloudflare.com\" \"https://hcaptcha.com\"), private-state-token-issuance=(self \"https://www.google.com\" \"https://www.gstatic.com\" \"https://recaptcha.net\" \"https://challenges.cloudflare.com\" \"https://hcaptcha.com\")" }, { "name": "link", "value": "; rel=\"https://api.w.org/\", ; rel=\"alternate\"; title=\"JSON\"; type=\"application/json\", ; rel=shortlink" } ], "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": "text/html; charset=UTF-8", "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": "Apache", "set_cookie": null, "strict_transport_security": null, "x_content_type_options": "nosniff", "x_download_options": null, "x_frame_options": null, "x_permitted_cross_domain_policies": null, "x_powered_by": "PHP/7.4.33", "x_xss_protection": "1; mode=block" }, "cookies": [] } } } ] } ``` ## Related Examples - [Wildcard Certificates From Let's Encrypt](/reference/discovery/domain-search/examples/wildcard-certificates-from-lets-encrypt/) - [Web URL Starting With https://](/reference/discovery/domain-search/examples/webdata-url/) - [Redirect Chain Through Plain HTTP](/reference/discovery/domain-search/examples/webdata-http-redirection-history-url/) - [Cache-Control With a Max Age](/reference/discovery/domain-search/examples/webdata-http-headers-cache-control/) - [HTML Content Type](/reference/discovery/domain-search/examples/webdata-http-headers-content-type/) - [TXT Record Starting With a Verification Token](/reference/discovery/domain-search/examples/dns-txt-values/)