# Self-Signed Certificates Matches records whose ssl.signature.is_self_signed equals true. Source: https://docs.deepinfo.com/reference/discovery/domain-search/examples/ssl-signature-is-self-signed/ Last updated: 2026-09-26 --- `POST https://api.deepinfo.com/v1/discovery/domain-search?page_size=25` Example 11 of 29 in **Filters › SSL** · [Domain Search Examples](/reference/discovery/domain-search/examples/) · endpoint: [Domain Search](/reference/discovery/domain-search/) Tags: `field` `ssl.signature.is_self_signed` · `operator` `eq` Matches records whose `ssl.signature.is_self_signed` equals `true`. In the response, look at `results[].ssl.signature.is_self_signed`. ## Request | Parameter | In | Value | |---|---|---| | `page_size` | query | `25` | | `filters.must[0].name` | body | `ssl.signature.is_self_signed` | | `filters.must[0].type` | body | `eq` | | `filters.must[0].value` | body | `true` | ```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.signature.is_self_signed", "type": "eq", "value": true } ] } }' ``` ## Response ### 200 · OK > Shortened for this page: results: 3 of 25 shown; results[].domain.whois_registrant_email_historical: 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: 99909` · `x-ratelimit-remaining-minute: 9982` · `x-ratelimit-remaining-second: 999` · `deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a` ```json { "page": 1, "page_size": 25, "result_count": 34900823, "results": [ { "punycode": "dekongroup.cn", "unicode": "dekongroup.cn", "is_idn": false, "subdomain": null, "subdomain_last": null, "subdomain_root": null, "name": { "punycode": "dekongroup", "unicode": "dekongroup", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 10, "lang": "en", "keywords": [ "dekon", "group" ], "keyword_count": 2, "latinized": [], "contains_confusable": false }, "domain": { "punycode": "dekongroup.cn", "unicode": "dekongroup.cn", "is_idn": false, "name": { "punycode": "dekongroup", "unicode": "dekongroup", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 10, "lang": "en", "keywords": [ "dekon", "group" ], "keyword_count": 2 }, "extension": { "punycode": 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"status_code_last": 200, "redirection_history": [ { "url": "http://pgpzh.im/", "status_code": 301 }, { "url": "https://pgpzh.im/", "status_code": 200 } ], "external_redirection": false, "final_url": "https://pgpzh.im/", "final_fqdn": "pgpzh.im", "final_domain": "pgpzh.im", "headers": { "others": [ { "name": "date", "value": "Sat, 09 May 2026 07:34:37 GMT" }, { "name": "transfer_encoding", "value": "chunked" }, { "name": "connection", "value": "keep-alive" }, { "name": "vary", "value": "Accept-Encoding, Accept-Encoding" }, { "name": "x_cache_status", "value": "MISS" } ], "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": null, "permission_policy": null, "referrer_policy": null, "server": "cdn", "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 - [Self-Signed or Invalid Certificates](/reference/discovery/domain-search/examples/self-signed-or-invalid-certificates/) - [Certificates With a Valid Signature](/reference/discovery/domain-search/examples/ssl-signature-is-valid/) - [Issuer Distinguished Name](/reference/discovery/domain-search/examples/ssl-issuer-dn/) - [Certificate by MD5 Fingerprint](/reference/discovery/domain-search/examples/ssl-fingerprint-md5/) - [Issuer Common Name](/reference/discovery/domain-search/examples/ssl-issuer-common-name/) - [Certificate by SHA-1 Fingerprint](/reference/discovery/domain-search/examples/ssl-fingerprint-sha1/)