ODIN

182.92.223.111

services.modules.tls.certificate.extensions.authority_key_id	78df91905feedeacf6c575ebd54c5553ef244ab6
services.modules.tls.certificate.extensions.basic_constraints.is_ca	true
services.modules.tls.certificate.extensions.ct_precert_scts	Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Jul 25 16:56:07.808 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:88:D9:18:85:B6:1D:11:7C:4E:4F:78: 0F:05:93:DE:8F:1B:23:B9:B8:FE:7A:2E:F3:12:D5:45: 64:D5:B0:6D:A1:02:20:66:ED:69:E4:BC:10:43:73:E9: 5A:3B:54:ED:1A:7B:27:8B:74:EF:B4:B1:B8:41:A6:9F: 91:98:19:B4:CF:9D:2F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Jul 25 16:56:07.739 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:84:89:EF:FA:4B:9D:85:6D:4E:EC:23: CD:4B:11:E6:5A:5F:F7:0D:8F:D1:69:A2:AC:BE:C5:1B: A6:F9:42:10:CC:02:21:00:C1:03:5F:8F:2B:97:08:01: 64:EA:78:F3:E0:B1:21:F7:4D:20:F6:92:6F:DE:40:DA: 7D:60:DD:08:B5:A2:37:82 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Jul 25 16:56:07.758 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:7A:E9:97:3C:16:6D:D9:AE:67:12:8F:13: F6:34:49:6A:E1:28:C4:E7:0C:21:B5:44:71:F3:22:43: DF:0D:C2:F6:02:21:00:B6:74:B8:F5:DA:7E:B9:9D:28: D9:09:50:2A:EE:F5:55:33:24:6F:38:AA:50:53:C1:9E: 74:22:37:36:BE:97:6E
services.modules.tls.certificate.extensions.extended_key_usage.any	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_code_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_code_signing_development	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_code_signing_third_party	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_development_env	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_env	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_maintenance_env	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_production_env	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_qos	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_test_env	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_tier0_qos	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_tier1_qos	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_tier2_qos	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_crypto_tier3_qos	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_ichat_encryption	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_ichat_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_resource_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_software_update_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.apple_system_identity	false
services.modules.tls.certificate.extensions.extended_key_usage.client_auth	true
services.modules.tls.certificate.extensions.extended_key_usage.code_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.dvcs	false
services.modules.tls.certificate.extensions.extended_key_usage.eap_over_lan	false
services.modules.tls.certificate.extensions.extended_key_usage.eap_over_ppp	false
services.modules.tls.certificate.extensions.extended_key_usage.email_protection	false
services.modules.tls.certificate.extensions.extended_key_usage.ipsec_end_system	false
services.modules.tls.certificate.extensions.extended_key_usage.ipsec_intermediate_system_usage	false
services.modules.tls.certificate.extensions.extended_key_usage.ipsec_tunnel	false
services.modules.tls.certificate.extensions.extended_key_usage.ipsec_user	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_ca_exchange	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_cert_trust_list_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_csp_signature	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_document_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_drm	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_drm_individualization	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_efs_recovery	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_embedded_nt_crypto	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_encrypted_file_system	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_enrollment_agent	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_kernel_mode_code_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_key_recovery_21	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_key_recovery_3	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_license_server	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_licenses	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_lifetime_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_mobile_device_software	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_nt5_crypto	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_oem_whql_crypto	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_qualified_subordinate	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_root_list_signer	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_server_gated_crypto	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_sgc_serialized	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_smart_display	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_smartcard_logon	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_system_health	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_system_health_loophole	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_timestamp_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.microsoft_whql_crypto	false
services.modules.tls.certificate.extensions.extended_key_usage.netscape_server_gated_crypto	false
services.modules.tls.certificate.extensions.extended_key_usage.ocsp_signing	false
services.modules.tls.certificate.extensions.extended_key_usage.sbgp_cert_aa_service_auth	false
services.modules.tls.certificate.extensions.extended_key_usage.server_auth	true
services.modules.tls.certificate.extensions.extended_key_usage.time_stamping	false
services.modules.tls.certificate.extensions.key_usage.certificate_sign	false
services.modules.tls.certificate.extensions.key_usage.content_commitment	false
services.modules.tls.certificate.extensions.key_usage.crl_sign	false
services.modules.tls.certificate.extensions.key_usage.data_encipherment	false
services.modules.tls.certificate.extensions.key_usage.decipher_only	false
services.modules.tls.certificate.extensions.key_usage.digital_signature	true
services.modules.tls.certificate.extensions.key_usage.encipher_only	false
services.modules.tls.certificate.extensions.key_usage.key_agreement	false
services.modules.tls.certificate.extensions.key_usage.key_encipherment	true
services.modules.tls.certificate.extensions.subject_key_id	96a07a02d53d244b183361b77b4cdfce583ef977
services.modules.tls.certificate.fingerprint_md5	4884CA9022E1DA716105CC04F08A3A2F
services.modules.tls.certificate.fingerprint_sha1	1FB6E558428EDD69CD46F5A40558821F09FD405B
services.modules.tls.certificate.fingerprint_sha256	5BE16FAD1A10A6CB444FE88394315F8EACD7C96A6DC721CFDC0E6DA764DB2A79
services.modules.tls.certificate.issuer_dn	/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=Encryption Everywhere DV TLS CA - G2
services.modules.tls.certificate.jarm	07d10d11d21d21d07c07d10d07d21d4c24f9a1cf1df168bb1f7ed5d7f42ac8
services.modules.tls.certificate.redacted	false
services.modules.tls.certificate.revocation.ocsp.next_update	2025-12-19T07:39:02
services.modules.tls.certificate.revocation.ocsp.reason	UNKNOWN
services.modules.tls.certificate.revocation.ocsp.revoked	false
services.modules.tls.certificate.serial_number	8798129598371740721627242187420914221
services.modules.tls.certificate.signature.algorithm.name	SHA256-RSA
services.modules.tls.certificate.signature.algorithm.oid	1.2.840.113549.1.1.11
services.modules.tls.certificate.signature.self_signed	false
services.modules.tls.certificate.signature.value	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
services.modules.tls.certificate.signed_certificate_timestamps_oid	1.3.6.1.4.1.11129.2.4.2
services.modules.tls.certificate.subject_dn	/CN=www.tjyxjy.cn
services.modules.tls.certificate.subject_key_info._key	rsa
services.modules.tls.certificate.subject_key_info.fingerprint_sha256	90e5fe2d0b2bf4b08a4ef6874a4ecbee1071f5e93029c967bacbc0eb9dc2c91d
services.modules.tls.certificate.subject_key_info.key_algorithm	RSA
services.modules.tls.certificate.subject_key_info.rsa.exponent	65537
services.modules.tls.certificate.subject_key_info.rsa.length	2048
services.modules.tls.certificate.subject_key_info.rsa.modulus	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
services.modules.tls.certificate.tbs_fingerprint	76d429600462059f3bf6b81161b89301bf8e4ca450a22b10a11607002b7673a7
services.modules.tls.certificate.tbs_noct_fingerprint	f5d210efacba0390d58e82dfc6d227cb83cc1bb63723ce5a39c80357f2d33827
services.modules.tls.certificate.validation_level	DV
services.modules.tls.certificate.validity.length_seconds	31536000
services.modules.tls.certificate.validity.not_after	2026-07-24T23:59:59
services.modules.tls.certificate.validity.not_before	2025-07-25T00:00:00
services.modules.tls.certificate.version	2
services.modules.tls.fingerprint_sha256	5BE16FAD1A10A6CB444FE88394315F8EACD7C96A6DC721CFDC0E6DA764DB2A79
services.modules.tls.precert	false
services.modules.tls.raw	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

ip	182.92.223.111
is_ipv4	true
is_ipv6	false
location.network	182.92.0.0/16
location.coordinates.latitude	39.911
location.coordinates.longitude	116.395
location.geo_point	39.911, 116.395
location.locale_code	en
location.continent	Asia
location.country_code	CN
location.country_name	China
location.city	Beijing
location_updated_at	2025-12-11T16:47:45Z
asn.number	AS37963
asn.organization	Hangzhou Alibaba Advertising Co.,Ltd.
asn_updated_at	0001-01-01T00:00:00Z
whois_updated_at	2024-12-09T11:27:07Z
last_updated_at	2025-12-13T00:16:58.894Z
is_vuln	true

whois.network	182.92.128.0/17
whois.organization	China Internet Network Information Center
whois.descr	China Internet Network Information Center, Floor1, Building No.1 C/-Chinese Academy of Sciences, 4, South 4th Street, Haidian District,

tags.name	is_anonymous_proxy
tags.pretty_name	Anonymous Proxy
tags.value	false
tags.last_updated_at	2025-12-11T16:47:45Z

tags.name	is_cdn
tags.pretty_name	CDN
tags.value	false
tags.last_updated_at	2025-12-11T19:28:18Z

tags.name	is_satellite_provider
tags.pretty_name	Satellite Provider
tags.value	false
tags.last_updated_at	2025-12-11T16:47:45Z

Basic Information

22/sshTCP

80/httpTCP

443/httpTCP

services.port	22
services.protocol	tcp
services.name	ssh
services.version	6.6.1
services.product	OpenSSH
services.extra_info	protocol 2.0
services.last_updated_at	2025-12-07T09:53:56.222Z

services.modules.ssh.banner	SSH-2.0-OpenSSH_6.6.1
services.modules.ssh.key.algorithm	ecdsa-sha2-nistp256
services.modules.ssh.key.fingerprint_sha256	f07f98420a07d0b1df7be26726ba0ba1997185aff9e29559ca2908c794f88343
services.modules.ssh.key.raw	AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBOK0Gj838Hy2V/0msuFbP6m1uoD0De0SH+C9djvYzvI69Pz6Ej7374z1ee6su36AL6Dkm+HFnWt+BkRk9ufwKuY=
services.modules.ssh.software	OpenSSH_6.6.1
services.modules.ssh.version	2.0

services.softwares.uri	cpe:/a:openbsd:openssh:6.6.1
services.softwares.part	a
services.softwares.vendor	openbsd
services.softwares.product	openssh
services.softwares.version	6\.6\.1
services.softwares.language	ANY
services.softwares.edition	ANY
services.softwares.update	ANY

services.cve.id	CVE-2007-2768
services.cve.score	4.3
services.cve.severity	medium

services.cve.id	CVE-2008-3844
services.cve.score	9.3
services.cve.severity	high

services.cve.id	CVE-2015-5352
services.cve.score	4.3
services.cve.severity	medium

services.softwares.uri	cpe:/a:alibaba:tengine
services.softwares.part	a
services.softwares.vendor	alibaba
services.softwares.product	tengine
services.softwares.version	ANY
services.softwares.language	ANY
services.softwares.edition	ANY
services.softwares.update	ANY

services.modules.http.body	<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <meta name="renderer" content="webkit"> <meta name="viewport" content="width=device-width,initial-scale=1.0"> <title></title> <meta name="description" content=""> <meta name="keywords" content=""> <meta name="author" content=""> ...
services.modules.http.body_murmur	1158723115
services.modules.http.body_sha256	c8c4ef6e4e95459562b39f1f904fd78241b858e0def9ed6abc9ad6b2796fc689
services.modules.http.content_length	-1
services.modules.http.favicon.md5_hash	13530f0e9185e2f34e5915a3d73279b3
services.modules.http.favicon.murmur_hash	299107177
services.modules.http.favicon.path	http://182.92.223.111:80/favicon.ico
services.modules.http.favicon.size	708
services.modules.http.protocol	HTTP/1.1
services.modules.http.request.method	GET
services.modules.http.request.url.host	182.92.223.111
services.modules.http.request.url.path	/
services.modules.http.request.url.scheme	https
services.modules.http.status_code	200

services.port	443
services.protocol	tcp
services.name	http
services.product	Tengine httpd
services.tunnel	ssl
services.url	https://182.92.223.111/
services.last_updated_at	2025-12-12T16:08:37.275Z