# Any Mail Server Under the Same Domain With apex=true, any mail server under google.com matches, not only aspmx.l.google.com: 22,508,485 domains instead of 15,623,703. Source: https://docs.deepinfo.com/reference/discovery/reverse-mx/examples/apex/ Last updated: 2026-09-24 --- `GET https://api.deepinfo.com/v1/discovery/reverse-mx?mx=aspmx.l.google.com&apex=true&page_size=25` With apex=true, any mail server under google.com matches, not only aspmx.l.google.com: 22,508,485 domains instead of 15,623,703. Example 1 of 2 in **Options** · [Reverse MX Examples](/reference/discovery/reverse-mx/examples/) · endpoint: [Reverse MX](/reference/discovery/reverse-mx/) Tags: `param` `apex` · `param` `mx` · `value` `true` · `value` `aspmx.l.google.com` `apex=true` matches every mail server whose registrable domain is that of `mx`, here `google.com`. The total grows from 15,623,703 to 22,508,485. The first two records shown use `smtp.google.com`, a different host of the same domain, which the exact lookup would not find. In the response, look at `result_count` and `results[].dns.mx.mail_servers`. ## Request | Parameter | In | Value | |---|---|---| | `mx` | query | `aspmx.l.google.com` | | `apex` | query | `true` | | `page_size` | query | `25` | ```bash curl 'https://api.deepinfo.com/v1/discovery/reverse-mx?mx=aspmx.l.google.com&apex=true&page_size=25' \ -H 'apikey: YOUR_API_KEY' \ -H 'Accept: application/json' ``` ## Response ### 200 · OK > Shortened for this page: results: 3 of 25 shown; results[].webdata.http.headers.others: first 10 items; results[].domain.ip_history: first 10 items; results[].ip_history: first 10 items `Content-Type: application/json` · `ratelimit-limit: 1` · `ratelimit-remaining: 0` · `ratelimit-reset: 1` · `x-ratelimit-limit-second: 1` · `x-ratelimit-remaining-second: 0` · `deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a` ```json { "page": 1, "page_size": 25, "result_count": 22508485, "results": [ { "punycode": "get-zapiercrew.com", "unicode": "get-zapiercrew.com", 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"dla" ], "fqdns": [ "andresberroa.com" ], "version": 3, "serial_number": "8494093014830620871", "fingerprint": { "sha256": "473e64ffaadf9f597c4daf4e08dae932be616233d6a66a86fd6d4df6d19260a0", "sha1": "9f2b508218b23ece83dabdb8366dac69f4994e56", "md5": "8334cf14751347ee987e9655fb513d55" }, "validity": { "start_date": "2026-07-30T23:46:58Z", "end_date": "2027-02-13T23:46:58Z", "length": 17107200 }, "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=GoDaddy TLS Intermediate CA DV - R1v1,O=GoDaddy.com,C=US", "issuer": { "common_name": "GoDaddy TLS Intermediate CA DV - R1v1", "country": "US", "state": null, "locality": null, "organization": "GoDaddy.com", "organizational_unit": null }, "subject_dn": "CN=andresberroa.com", "subject": { "common_name": "andresberroa.com", "country": null, "state": null, "locality": null, "organization": null, "organizational_unit": null }, "extensions": { "authority_key_id": "ievnHXnDvts/3I4gsPvkHnw59is=", "basic_constraints": { "is_ca": false }, "certificate_policies": [ "2.23.140.1.2.1", "2.16.840.1.114413.1.7.23.1" ], "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": [ "2026-07-30T23:46:59Z", "2026-07-30T23:47:00Z" ], "subject_alt_name": { "dns_names": [ "andresberroa.com" ] }, "subject_key_id": "chuRdPwl32QFMiU0VthCDkwESd8=" }, "check_date": "2026-09-22T07:54:18Z" }, "ssl_last_change_date": "2026-09-22T07:56:20Z", "webdata": { "connection_status": "success", "html": { "source_code_hash": "ff4b3a738aff313211f8fbfc606865233cd18f157a5a464a4e1a8d732ffe3799" }, "http": { "status_code_first": 301, "status_code_last": 404, "redirection_history": [ { "url": "http://andresberroa.com/", "status_code": 301 }, { "url": "https://andresberroa.milaulas.com/my/courses.php", "status_code": 404 } ], "external_redirection": true, "final_url": "https://andresberroa.milaulas.com/my/courses.php", "final_fqdn": "andresberroa.milaulas.com", "final_domain": "milaulas.com", "headers": { "others": [ { "name": "date", "value": "Sat, 19 Sep 2026 04:46:50 GMT" }, { "name": "transfer_encoding", "value": "chunked" }, { "name": "connection", "value": "keep-alive" }, { "name": "vary", "value": "Accept-Encoding, Accept-Encoding" } ], "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": "nginx", "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": "PHP/8.4.25", "x_xss_protection": null }, "cookies": [] } } } ] } ``` ## Related Examples - [Including Subdomains](/reference/discovery/reverse-mx/examples/include-subdomains/) - [Domains Using One Mail Server](/reference/discovery/reverse-mx/examples/mail-server/) - [Second Page of Results](/reference/discovery/reverse-mx/examples/second-page/) - [Larger Pages (100 Results)](/reference/discovery/reverse-mx/examples/page-size-100/) - [Domains Using Cloudflare Email Routing](/reference/discovery/reverse-mx/examples/cloudflare-email-routing/) - [Earliest Expiry First](/reference/discovery/reverse-mx/examples/ordering-expiry-date/)