# Self-Signed or Invalid Certificates Either condition is enough (should): a self-signed certificate, or a signature that does not validate. Source: https://docs.deepinfo.com/reference/discovery/domain-search/examples/self-signed-or-invalid-certificates/ Last updated: 2026-09-26 --- `POST https://api.deepinfo.com/v1/discovery/domain-search?page_size=25` Example 2 of 8 in **Combinations › Investigations** · [Domain Search Examples](/reference/discovery/domain-search/examples/) · endpoint: [Domain Search](/reference/discovery/domain-search/) Tags: `field` `ssl.signature.is_self_signed` · `field` `ssl.signature.is_valid` · `operator` `eq` · `logic` `should` Either condition is enough (`should`): a self-signed certificate, or a signature that does not validate. ## Request | Parameter | In | Value | |---|---|---| | `page_size` | query | `25` | | `filters.should[0].name` | body | `ssl.signature.is_self_signed` | | `filters.should[0].type` | body | `eq` | | `filters.should[0].value` | body | `true` | | `filters.should[1].name` | body | `ssl.signature.is_valid` | | `filters.should[1].type` | body | `eq` | | `filters.should[1].value` | body | `false` | ```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": { "should": [ { "name": "ssl.signature.is_self_signed", "type": "eq", "value": true }, { "name": "ssl.signature.is_valid", "type": "eq", "value": false } ] } }' ``` ## Response ### 200 · OK > Shortened for this page: results: 3 of 25 shown; results[].domain.ip_history: first 10 items; results[].ip_history: first 10 items `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: 99821` · `x-ratelimit-remaining-minute: 9991` · `x-ratelimit-remaining-second: 999` · `deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a` ```json { "page": 1, "page_size": 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"\"afternic-verification-VKoxaZkQawZ8VVht35n43c\"", "\"v=spf1 include:u2069692.wl.sendgrid.net -all\"" ] }, "cname": { "update_date": "2026-09-22T06:28:57Z", "values": [] }, "others": [] }, "dns_last_change_date": "2026-09-22T06:30:15Z", "ip_history": [ "15.222.50.11", "3.99.54.18", "3.97.36.24", "3.99.78.66", "3.97.214.159", "3.98.191.22", "3.97.245.0", "3.97.117.82", "3.99.14.164", "3.97.24.88" ], "ssl": { "tags": [ "dla" ], "fqdns": [], "version": 1, "serial_number": "15199105993947928578", "fingerprint": { "sha256": "237ee3a149a024c90c46b16ad0b24bb51bc378664b16f60b46151774c82579f6", "sha1": "3681981cce42123211dff2b1fca102b01901bb5a", "md5": "31a0cc862b0910d1aa850a87c9a5b31d" }, "validity": { "start_date": "2009-07-09T22:11:02Z", "end_date": "2019-07-07T22:11:02Z", "length": 315360000 }, "signature": { "is_self_signed": true, "is_valid": false, "value": "yIa2Dmk47KgyjOhwth9Uu68U4ZXfWRj4xO9Jon1T4mXd2tuszCmqCnCw0OaeCukuV4da4gYXizmvdnEUuI31BADZ8CB+HY6aMv3w5kpc9xUlW3Lqv/MNh3XjufG0JqsuVJ4L18vcLImIwDwhb8wfyYSgp/+0aMebnktVBqRtDsg=", "algorithm": { "oid": "1.2.840.113549.1.1.5", "name": "sha1" } }, "issuer_dn": "O=My Company Ltd,L=Newbury,ST=Berkshire,C=GB", "issuer": { "common_name": null, "country": "GB", "state": "Berkshire", "locality": "Newbury", "organization": "My Company Ltd", "organizational_unit": null }, "subject_dn": "O=My Company Ltd,L=Newbury,ST=Berkshire,C=GB", "subject": { "common_name": null, "country": "GB", "state": "Berkshire", "locality": "Newbury", "organization": "My Company Ltd", "organizational_unit": null }, "extensions": { "authority_key_id": null, "basic_constraints": null, "certificate_policies": [], "extended_key_usage": null, "key_usage": null, "signed_certificate_timestamps": [], "subject_alt_name": null, "subject_key_id": null }, "check_date": "2026-09-22T06:30:18Z" }, "ssl_last_change_date": "2023-05-21T16:52:14Z", "webdata": { "connection_status": "success", "html": { "source_code_hash": "21c24ec8410eb9f3fdf3380aec73737fc61a8b934de8ba71ded3ad803aa0b2bf" }, "http": { "status_code_first": 200, "status_code_last": 200, "redirection_history": [ { "url": "http://jazzforkids.com/", "status_code": 200 } ], "external_redirection": null, "final_url": "http://jazzforkids.com/", "final_fqdn": "jazzforkids.com", "final_domain": "jazzforkids.com", "headers": { "others": [ { "name": "date", "value": "Sat, 21 Mar 2026 22:25:20 GMT" }, { "name": "transfer_encoding", "value": "chunked" }, { "name": "connection", "value": "keep-alive" } ], "access_control_allow_headers": null, "access_control_allow_methods": null, "access_control_allow_origin": null, "cache_control": "no-cache, private", "clear_site_data": null, "content_encoding": null, "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": "nginx", "set_cookie": "AWSALB=; Expires=Sat, 28 Mar 2026 22:25:19 GMT; Path=/, AWSALBCORS=; Expires=Sat, 28 Mar 2026 22:25:19 GMT; Path=/; SameSite=None, XSRF-TOKEN=; expires=Sun, 22 Mar 2026 00:25:20 GMT; Max-Age=7200; path=/, lander_session=; expires=Sun, 22 Mar 2026 00:25:20 GMT; Max-Age=7200; path=/; httponly", "strict_transport_security": null, "x_content_type_options": "nosniff", "x_download_options": null, "x_frame_options": "SAMEORIGIN, SAMEORIGIN", "x_permitted_cross_domain_policies": null, "x_powered_by": null, "x_xss_protection": "1; mode=block" }, "cookies": [ { "name": "AWSALB", "value": "" }, { "name": "AWSALBCORS", "value": "" }, { "name": "XSRF-TOKEN", "value": "" }, { "name": "lander_session", "value": "" } ] } } } ] } ``` ## Related Examples - [Certificates With a Valid Signature](/reference/discovery/domain-search/examples/ssl-signature-is-valid/) - [Self-Signed Certificates](/reference/discovery/domain-search/examples/ssl-signature-is-self-signed/) - [All Three: New Shops Without WHOIS Privacy](/reference/discovery/domain-search/examples/all-three-new-shops-without-whois-privacy/) - [Must and Should Together](/reference/discovery/domain-search/examples/must-and-should-together/) - [Should: Either of Two Registrars](/reference/discovery/domain-search/examples/should-either-of-two-registrars/) - [Expiring Soon With WHOIS Privacy](/reference/discovery/domain-search/examples/expiring-soon-with-whois-privacy/)