# Root Subdomain Label Matches records whose subdomain_root equals www. Source: https://docs.deepinfo.com/reference/discovery/domain-search/examples/subdomain-root/ Last updated: 2026-09-26 --- `POST https://api.deepinfo.com/v1/discovery/domain-search?page_size=25` Example 8 of 9 in **Filters › Subdomain** · [Domain Search Examples](/reference/discovery/domain-search/examples/) · endpoint: [Domain Search](/reference/discovery/domain-search/) Tags: `field` `subdomain_root` · `operator` `eq` Matches records whose `subdomain_root` equals `www`. For a one-label subdomain such as `www.acme.example`, `subdomain`, `subdomain_last` and `subdomain_root` are all `www`; they differ on deeper subdomains. In the response, look at `results[].subdomain_root.punycode`. ## Request | Parameter | In | Value | |---|---|---| | `page_size` | query | `25` | | `filters.must[0].name` | body | `subdomain_root` | | `filters.must[0].type` | body | `eq` | | `filters.must[0].value` | body | `www` | ```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": "subdomain_root", "type": "eq", "value": "www" } ] } }' ``` ## 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: 99972` · `x-ratelimit-remaining-minute: 9999` · `x-ratelimit-remaining-second: 999` · `deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a` ```json { "page": 1, "page_size": 25, "result_count": 273281981, "results": [ { "punycode": "www.termo-opt1.ru", "unicode": "www.termo-opt1.ru", "is_idn": false, "subdomain": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "subdomain_last": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "subdomain_root": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "name": { "punycode": "www.termo-opt1", "unicode": "www.termo-opt1", "is_idn": false, "contains_letter": true, "contains_number": true, "contains_hyphen": true, "length": 13, "lang": "pt", "keywords": [ "www", "termo", "opt" ], "keyword_count": 3, "latinized": [], "contains_confusable": false }, "domain": { "punycode": "termo-opt1.ru", "unicode": "termo-opt1.ru", "is_idn": false, "name": { "punycode": "termo-opt1", "unicode": "termo-opt1", "is_idn": false, "contains_letter": true, "contains_number": true, "contains_hyphen": true, "length": 10, "lang": "pt", "keywords": [ "termo", "opt" ], "keyword_count": 2 }, "extension": { "punycode": "ru", "unicode": "ru", "is_idn": false }, "extension_root": { "punycode": "ru", "unicode": "ru", "is_idn": false }, "extension_sub": null, "extension_type": 2, "reserved": null, "premium": null, "registered": true, "whois": { "create_date": "2026-06-03T06:48:53Z", "update_date": "2026-06-12T17:38:01Z", "expiry_date": "2027-06-03T06:48:53Z", "registrar": "regru-ru", "registrant": { "name": null, "organization": null, "street": null, "city": null, "state": null, "postal_code": null, "country": null, "phone": null, "email": null }, "name_servers": [ "ns1.hosting.reg.ru", "ns2.hosting.reg.ru" ], "domain_status": [ "delegated", "registered", "unverified" ], "whois_server": null, "check_date": "2026-06-12T17:40:31Z" }, "whois_normalized": { "registrant": null }, "whois_last_check_date": "2026-06-12T17:40:31Z", "whois_create_date_historical": null, "whois_last_change_date": "2026-06-12T17:41:46Z", "whois_registrant_email_historical": null, "whois_privacy_enabled": null, "dns": { "a": { "update_date": "2026-08-28T03:29:21Z", "ip_addresses": [ "31.31.197.28" ] } }, "dns_last_change_date": "2026-08-12T09:46:03Z", "ip_history": null, "ssl": { "validity": { "start_date": "2026-08-02T23:40:44Z", "end_date": "2026-10-31T23:40:43Z" }, "serial_number": "584573614752101968046377775888158878594722", "check_date": "2026-09-02T10:29:09Z" }, "ssl_last_change_date": "2026-08-29T21:55:52Z" }, "type": 2, "subdomain_level_count": 1, "dns": { "a": { "update_date": "2026-07-30T14:21:04Z", "ip_addresses": [ "31.31.197.28" ] }, "aaaa": { "update_date": "2026-07-30T14:21:04Z", "ip_addresses": [ "2a00:f940:2:2:1:1:0:286" ] }, "ns": { "update_date": "2026-07-30T14:21:04Z", "name_servers": [] }, "mx": { "update_date": "2026-07-30T14:21:04Z", "mail_servers": [] }, "soa": { "update_date": "2026-07-30T14:21:04Z", "mnames": [], "rnames": [], "rname_emails": [] }, "txt": { "update_date": "2026-07-30T14:21:04Z", "values": [] }, "cname": { "update_date": "2026-07-30T14:21:04Z", "values": [] }, "others": [] }, "dns_last_change_date": "2026-06-12T17:31:17Z", "ip_history": [ "31.31.197.28" ], "ssl": { "tags": [ "dla" ], "fqdns": [ "termo-opt1.ru", "www.termo-opt1.ru" ], "version": 3, "serial_number": "584573614752101968046377775888158878594722", "fingerprint": { "sha256": "485fe791b4d92f9dca6f60c05cf9a5a1db707c150e041bf657955f461f3c4d13", "sha1": "4459f865fe9b9ccd117dbc070aa0bebae2b2bab0", "md5": "642a3aab623623c2ac7ef7e57cac6093" }, "validity": { "start_date": "2026-08-02T23:40:44Z", "end_date": "2026-10-31T23:40:43Z", "length": 7775999 }, "signature": { "is_self_signed": false, "is_valid": true, "value": "JS6Vgcf0xq+hIT8hlvQprOAYG8oJC3jNMzHSokRQG6RxmJ31AzW0ZzEgErafNfhjXnHzfXYmR7zi40FVpRdTdLVbmZ2eUVkr0U7EKnCarpsDk3MFtzryoCvff/QfWT9JhQKmKC4YQ3KAxRJWQB6ycNX/npvu+VJyyevrBz2sXRElm1uWi4BfGgh+d/kDKcyDLlmZ/iuZ5skElB3RdbJnkRq8B12lQphiQ00I79DHr2ifCc6ADrAGoqSHZKHsPcrGO0xB5986ngqquE55aVZELVYnE9wnta3XBlaxbomnmYfzw0iiq1J944O/0sQrHBuvsNe40flpZtkD42HSJngGCA==", "algorithm": { "oid": "1.2.840.113549.1.1.11", "name": "sha256" } }, "issuer_dn": "CN=YR2,O=Let's Encrypt,C=US", "issuer": { "common_name": "YR2", "country": "US", "state": null, "locality": null, "organization": "Let's Encrypt", "organizational_unit": null }, "subject_dn": "CN=termo-opt1.ru", "subject": { "common_name": "termo-opt1.ru", "country": null, "state": null, "locality": null, "organization": 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": [ "2026-08-03T00:39:15Z", "2026-08-03T00:39:14Z" ], "subject_alt_name": { "dns_names": [ "termo-opt1.ru", "www.termo-opt1.ru" ] }, "subject_key_id": "Cy9EkHPonJ4mFifmTqq2BP/UqD4=" }, "check_date": "2026-09-02T10:29:09Z" }, "ssl_last_change_date": "2026-09-02T10:29:54Z", "webdata": { "connection_status": "success", "html": { "source_code_hash": "9ba54f3136eaebeb966de3aa5c12c506bbe6ded9823cdeb3a390d438527cbeeb" }, "http": { "status_code_first": 301, "status_code_last": 200, "redirection_history": [ { "url": "http://www.termo-opt1.ru/", "status_code": 301 }, { "url": "https://www.termo-opt1.ru/", "status_code": 200 } ], "external_redirection": false, "final_url": "https://www.termo-opt1.ru/", "final_fqdn": "www.termo-opt1.ru", "final_domain": "termo-opt1.ru", "headers": { "others": [ { "name": "date", "value": "Fri, 12 Jun 2026 17:31:30 GMT" }, { "name": "content_length", "value": "6477" }, { "name": "connection", "value": "keep-alive" }, { "name": "etag", "value": "\"5eac-6535651761b8c-gzip\"" }, { "name": "accept_ranges", "value": "bytes" }, { "name": "expires", "value": "Fri, 12 Jun 2026 18:31:30 GMT" }, { "name": "vary", "value": "Accept-Encoding" }, { "name": "permissions_policy", "value": "geolocation=(), microphone=(), camera=()" } ], "access_control_allow_headers": null, "access_control_allow_methods": null, "access_control_allow_origin": null, "cache_control": "max-age=3600", "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": "Wed, 03 Jun 2026 09:47:39 GMT", "permission_policy": null, "referrer_policy": "strict-origin-when-cross-origin", "server": "nginx", "set_cookie": null, "strict_transport_security": null, "x_content_type_options": "nosniff", "x_download_options": null, "x_frame_options": "SAMEORIGIN", "x_permitted_cross_domain_policies": null, "x_powered_by": null, "x_xss_protection": null }, "cookies": [] } } }, { "punycode": "www.paradis-architecture.com", "unicode": "www.paradis-architecture.com", "is_idn": false, "subdomain": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "subdomain_last": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "subdomain_root": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "name": { "punycode": "www.paradis-architecture", "unicode": "www.paradis-architecture", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": true, "length": 23, "lang": "en", "keywords": [ "www", "paradis", "architecture" ], "keyword_count": 3, "latinized": [], "contains_confusable": false }, "domain": { "punycode": "paradis-architecture.com", "unicode": "paradis-architecture.com", "is_idn": false, "name": { "punycode": "paradis-architecture", "unicode": "paradis-architecture", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": true, "length": 20, "lang": "en", "keywords": [ "paradis", "architecture" ], "keyword_count": 2 }, "extension": { "punycode": "com", "unicode": "com", "is_idn": false }, "extension_root": { "punycode": "com", "unicode": "com", "is_idn": false }, "extension_sub": null, "extension_type": 1, "reserved": null, "premium": null, "registered": true, "whois": { "create_date": "2025-05-22T15:28:48Z", "update_date": "2025-05-22T15:28:48Z", "expiry_date": "2028-05-22T15:28:48Z", "registrar": "squarespace domains llc", "registrant": { "name": "redacted for privacy", "organization": null, "street": "redacted for privacy", "city": "redacted for privacy", "state": "ct", "postal_code": "redacted for privacy", "country": "us", "phone": "redacted for privacy", "email": "REDACTED FOR PRIVACY" }, "name_servers": [ "ns-cloud-c1.googledomains.com", "ns-cloud-c2.googledomains.com", "ns-cloud-c3.googledomains.com", "ns-cloud-c4.googledomains.com" ], "domain_status": [ "clientdeleteprohibited", "clienttransferprohibited" ], "whois_server": "whois.squarespace.domains", "check_date": "2026-07-21T22:15:03Z" }, "whois_normalized": { "registrant": { "organization": null, "phone": null, "email": null, "email_fqdn_apex": null, "email_domain_apex": null } }, "whois_last_check_date": "2026-07-21T22:15:03Z", "whois_create_date_historical": null, "whois_last_change_date": "2025-05-22T16:05:51Z", "whois_registrant_email_historical": null, 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"www.paradis-architecture.com", "final_domain": "paradis-architecture.com", "headers": { "others": [ { "name": "accept_ranges", "value": "bytes" }, { "name": "age", "value": "138183" }, { "name": "content_length", "value": "30776" }, { "name": "date", "value": "Thu, 12 Mar 2026 20:31:52 GMT" }, { "name": "etag", "value": "W/\"a337eea45e6918a4ec7457d47cefb8ef--gzip\"" }, { "name": "expires", "value": "Thu, 01 Jan 1970 00:00:00 GMT" }, { "name": "vary", "value": "Accept-Encoding" }, { "name": "x_contextid", "value": "AW4KKzDL/Rn2kNnpk" } ], "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": "Squarespace", "set_cookie": null, "strict_transport_security": "max-age=15552000", "x_content_type_options": "nosniff", "x_download_options": null, "x_frame_options": "SAMEORIGIN", "x_permitted_cross_domain_policies": null, "x_powered_by": null, "x_xss_protection": null }, "cookies": [] } } }, { "punycode": "www.pingukids.ir", "unicode": "www.pingukids.ir", "is_idn": false, "subdomain": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "subdomain_last": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "subdomain_root": { "punycode": "www", "unicode": "www", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 3 }, "name": { "punycode": "www.pingukids", "unicode": "www.pingukids", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 12, "lang": "en", "keywords": [ "www", "pingu", "kids" ], "keyword_count": 3, "latinized": [], "contains_confusable": false }, "domain": { "punycode": "pingukids.ir", "unicode": "pingukids.ir", "is_idn": false, "name": { "punycode": "pingukids", "unicode": "pingukids", "is_idn": false, "contains_letter": true, "contains_number": false, "contains_hyphen": false, "length": 9, "lang": "en", "keywords": [ "pingu", "kids" ], "keyword_count": 2 }, "extension": { "punycode": "ir", "unicode": "ir", "is_idn": false }, "extension_root": { "punycode": "ir", "unicode": "ir", "is_idn": false }, "extension_sub": null, "extension_type": 2, "reserved": null, "premium": null, "registered": null, "whois": null, "whois_normalized": null, "whois_last_check_date": null, "whois_create_date_historical": null, "whois_last_change_date": null, "whois_registrant_email_historical": null, "whois_privacy_enabled": null, "dns": { "a": { "update_date": "2026-08-25T17:02:58Z", "ip_addresses": [ "89.39.208.89" ] } }, "dns_last_change_date": "2026-07-09T01:41:48Z", "ip_history": null, "ssl": null, "ssl_last_change_date": null }, "type": 2, "subdomain_level_count": 1, "dns": { "a": { "update_date": "2026-08-31T14:50:17Z", "ip_addresses": [ "89.39.208.89" ] }, "aaaa": { "update_date": "2026-08-31T14:50:17Z", "ip_addresses": [] }, "ns": { "update_date": "2026-08-31T14:50:17Z", "name_servers": [ "ns725.mihanwebhost.com", "ns726.mihanwebhost.com" ] }, "mx": { "update_date": "2026-08-31T14:50:17Z", "mail_servers": [ "mail.pingukids.ir" ] }, "soa": { "update_date": "2026-08-31T14:50:17Z", "mnames": [ "ns725.mihanwebhost.com" ], "rnames": [ "user.gmail.com" ], "rname_emails": [ "user@gmail.com" ] }, "txt": { "update_date": "2026-08-31T14:50:17Z", "values": [ "\"v=spf1 +a +mx +ip4:89.39.208.89 +ip4:217.144.104.185 ~all\"" ] }, "cname": { "update_date": "2026-08-31T14:50:17Z", "values": [ "pingukids.ir." ] }, "others": [] }, "dns_last_change_date": "2026-09-02T09:41:02Z", "ip_history": [ "89.39.208.89" ], "ssl": null, "ssl_last_change_date": null, "webdata": { "connection_status": "timeout", "html": null, "http": null } } ] } ``` ## Related Examples - [Last Subdomain Label](/reference/discovery/domain-search/examples/subdomain-last/) - [Subdomains Containing a Hyphen](/reference/discovery/domain-search/examples/subdomain-contains-hyphen/) - [Subdomains Containing Digits](/reference/discovery/domain-search/examples/subdomain-contains-number/) - [Subdomains Containing Letters](/reference/discovery/domain-search/examples/subdomain-contains-letter/) - [Internationalized Subdomains](/reference/discovery/domain-search/examples/subdomain-is-idn/) - [One Subdomain Across Domains](/reference/discovery/domain-search/examples/subdomain/)