e4u.com Threat Intelligence and Information

Sep 12, 2025 domainpage

Host Location

Screenshot

alt-text

Dig Results

  • Got answer:
  • -»HEADER«- opcode: QUERY, status: NOERROR, id: 44350
  • flags: qr rd ra QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
  • OPT PSEUDOSECTION:
  • EDNS: version: 0, flags: udp: 1432
  • QUESTION SECTION:
  • e4u.com. IN A
  • ANSWER SECTION:
  • e4u.com. 3644 IN A 203.231.233.185
  • Query time: 0 msec
  • SERVER: 192.168.1.153(192.168.1.1) (UDP)
  • WHEN: Fri Sep 12 00:07:24 UTC 2025
  • MSG SIZE rcvd: 52

Whois Data

  • Domain Name: E4U.COM
  • Registry Domain ID: 12755534_DOMAIN_COM-VRSN
  • Registrar URL: http://www.gabia.com
  • Updated Date: 2024-10-11T00:35:11Z
  • Creation Date: 1999-11-11T22:44:59Z
  • Registry Expiry Date: 2025-11-11T22:44:59Z
  • Registrar: Gabia, Inc.
  • Registrar IANA ID: 244
  • Registrar Abuse Contact Email: abuse@gabia.com
  • Registrar Abuse Contact Phone: +82.28293543
  • Name Server: NS.YBMSISA.COM
  • Name Server: NS2.YBMSISA.COM
  • DNSSEC: unsigned
  • Domain Name: e4u.com
  • Registry Domain ID:
  • Registrar URL: https://www.gabia.com
  • Updated Date: 2025-05-27T00:56:24Z
  • Creation Date: 1999-11-11
  • Registrar Registration Expiration Date: 2025-11-11
  • Registrar: gabia
  • Registrar IANA ID: 244
  • Reseller: gabia
  • Registry Registrant ID: Not Available From Registry
  • Registrant Name: YBM NET
  • Registrant Organization: YBM NET
  • Registrant Street: 98, Jong-ro, Jongno-gu, Seoul, Republic of Korea
  • Registrant City: Seoul
  • Registrant State/Province:
  • Registrant Postal Code: 03191
  • Registrant Country: KR
  • Registrant Phone: +82.220085200
  • Registrant Phone Ext:
  • Registrant Fax:
  • Registrant Fax Ext:
  • Registrant Email: domainmaster@ybmsisa.com
  • Registry Admin ID: Not Available From Registry
  • Admin Name: YBM NET
  • Admin Organization:
  • Admin Street: 98, Jong-ro, Jongno-gu, Seoul, Republic of Korea
  • Admin City: Seoul
  • Admin State/Province:
  • Admin Postal Code: 03191
  • Admin Country: KR
  • Admin Phone: +82.220085200
  • Admin Phone Ext:
  • Admin Fax:
  • Admin Fax Ext:
  • Admin Email: domainmaster@ybmsisa.com
  • Registry Tech ID: Not Available From Registry
  • Tech Name: YBM NET
  • Tech Organization:
  • Tech Street: 98, Jong-ro, Jongno-gu, Seoul, Republic of Korea
  • Tech City: Seoul
  • Tech State/Province:
  • Tech Postal Code: 03191
  • Tech Country: KR
  • Tech Phone: +82.220085200
  • Tech Phone Ext:
  • Tech Fax:
  • Tech Fax Ext:
  • Tech Email: domainmaster@ybmsisa.com
  • Name Server: NS.YBMSISA.COM
  • Name Server: NS2.YBMSISA.COM
  • DNSSEC: unsigned
  • Registrar Abuse Contact Email: abuse@gabia.com
  • Registrar Abuse Contact Phone: 82.28293543
  • and that, under no circumstances will you use this Data to:

SSL Certificate Information

  • Certificate:
  • Data:
  • Version: 3 (0x2)
  • Serial Number:
  • 2f:83:96:60:ba:c9:58:b8:f0:ab:01:d3
  • Signature Algorithm: sha256WithRSAEncryption
  • Issuer: C = BE, O = GlobalSign nv-sa, CN = GlobalSign RSA OV SSL CA 2018
  • Validity
  • Not Before: Aug 26 00:56:02 2025 GMT
  • Not After : Sep 27 00:56:01 2026 GMT
  • Subject: C = KR, ST = Seoul, L = Jongno-gu, O = “YBM NET, Inc.”, CN = *.ybmnet.co.kr
  • Subject Public Key Info:
  • Public Key Algorithm: rsaEncryption
  • Public-Key: (2048 bit)
  • Modulus:
  • 00:ec:a5:8d:ce:16:45:5d:b0:b5:c8:6e:39:a7:6b:
  • b5:2a:9a:2f:2b:35:28:64:0c:c5:a7:62:6d:06:db:
  • 8f:c6:2b:eb:6d:39:2e:e9:cb:0c:50:d9:f0:73:6a:
  • 41:b5:43:32:1c:96:cb:96:72:fa:b7:b1:92:6a:48:
  • 3a:af:4e:62:ca:e0:ba:66:fd:89:0f:5f:c4:a7:82:
  • ef:8f:6f:d6:fe:16:fc:72:b3:61:62:4e:af:8d:8b:
  • d9:59:09:4d:f1:65:0c:2d:a0:26:b2:b2:c1:a1:1e:
  • 4f:81:ec:ee:6c:c8:1f:7a:7c:02:25:1b:8e:76:c8:
  • cd:37:05:26:e4:ee:fc:c9:3a:c9:c1:4c:08:2b:39:
  • 43:ed:e9:6d:54:44:f5:b4:38:6e:2d:2a:9b:d0:b7:
  • e4:8f:10:13:9d:46:55:78:23:a6:f2:4c:8d:f3:4b:
  • c5:cd:45:74:6e:c0:74:90:ac:2b:db:7c:f5:97:61:
  • 97:7e:f7:08:35:48:a9:2f:57:50:c2:cf:52:c9:c8:
  • a5:3f:9a:e1:17:f0:42:06:80:1a:53:f9:4d:82:3e:
  • 57:9a:db:00:f4:24:2d:98:7c:7b:0b:b4:c0:bb:ad:
  • d3:a8:2a:8d:d0:fb:51:2f:a1:3a:f7:4f:d3:c6:4a:
  • 0a:24:f0:09:49:3f:0f:b4:b9:dc:57:3c:44:bd:a9:
  • 94:69
  • Exponent: 65537 (0x10001)
  • X509v3 extensions:
  • X509v3 Key Usage: critical
  • Digital Signature, Key Encipherment
  • X509v3 Basic Constraints: critical
  • CA:FALSE
  • Authority Information Access:
  • CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt
  • OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
  • X509v3 Certificate Policies:
  • Policy: 1.3.6.1.4.1.4146.1.20
  • CPS: https://www.globalsign.com/repository/
  • Policy: 2.23.140.1.2.2
  • X509v3 CRL Distribution Points:
  • Full Name:
  • URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
  • X509v3 Subject Alternative Name:
  • DNS:.ybmnet.co.kr, DNS:ybmbiz.co.kr, DNS:ybmclass.com, DNS:ybmfarm.com, DNS:ybmphoneclass.com, DNS:ybmsisa.com, DNS:admin.toeic.co.kr, DNS:answer.eslscat.com, DNS:b2b.toeic.co.kr, DNS:b2b.ybmedu.com, DNS:company.ybm.co.kr, DNS:cs.ybmpine.com, DNS:elearning.ybmpine.com, DNS:exam.toeic.co.kr, DNS:ipresult.toeflitp.co.kr, DNS:ipscore.toeic.co.kr, DNS:issue.toeflitp.co.kr, DNS:learning.ybmecc.com, DNS:m.bizhanja.co.kr, DNS:m.china.ybmclass.com, DNS:m.cyber.ybmsisa.com, DNS:m.eng.ybmclass.com, DNS:m.exam.toeic.co.kr, DNS:m.exam.ybmsisa.com, DNS:m.japan.ybmclass.com, DNS:m.jet.or.kr, DNS:m.jetkids.co.kr, DNS:m.jetspeaking.co.kr, DNS:m.jpt.co.kr, DNS:m.kor.ybmclass.com, DNS:m.my.ybmclass.com, DNS:m.pay.ybmclass.com, DNS:m.phone.ybmclass.com, DNS:m.toeflitp.co.kr, DNS:m.toeic.co.kr, DNS:m.toeic.ybmclass.com, DNS:m.toeicbridge.co.kr, DNS:m.toeicbridgeswt.co.kr, DNS:m.toeicswt.co.kr, DNS:m.ybm1to1.com, DNS:m.ybmjuniortest.co.kr, DNS:m.ybmkpe.co.kr, DNS:m.ybmpublwiz.co.kr, DNS:m.ybmsjpt.co.kr, DNS:m.ybmteachers.com, DNS:m.ybmtsc.co.kr, DNS:note.ybmpine.com, DNS:server.toeicswt.co.kr, DNS:sogangsgp.com, DNS:sol.cyberesls.com, DNS:speech.cyberesls.com, DNS:supervisor.toeic.co.kr, DNS:wow.ybmecc.com, DNS:wow.ybmpine.com, DNS:wowasp.ybmecc.com, DNS:www.asukorea.co.kr, DNS:www.asukorea.com, DNS:www.bizhanja.co.kr, DNS:www.choekang.co.kr, DNS:www.choekang.com, DNS:www.cyberesls.com, DNS:www.eslscat.com, DNS:www.icfkorea.net, DNS:www.jet.or.kr, DNS:www.jetkids.co.kr, DNS:www.jetspeaking.co.kr, DNS:www.jpt.co.kr, DNS:www.plan-verse.com, DNS:www.readingfarm.co, DNS:www.toeflitp.co.kr, DNS:www.toeic.co.kr, DNS:www.toeicbridge.co.kr, DNS:www.toeicbridgeswt.co.kr, DNS:www.toeicswt.co.kr, DNS:www.wbook.co.kr, DNS:www.ybm.co.kr, DNS:www.ybm1to1.com, DNS:www.ybmacademy.com, DNS:www.ybmallinall.com, DNS:www.ybmb2b.com, DNS:www.ybmbook.co.kr, DNS:www.ybmbooks.com, DNS:www.ybmcc.com, DNS:www.ybmecc.com, DNS:www.ybmedu.com, DNS:www.ybmengloo.co.kr, DNS:www.ybmengloo.com, DNS:www.ybmfamily.com, DNS:www.ybmjuniortest.co.kr, DNS:www.ybmkpe.co.kr, DNS:www.ybmlive.com, DNS:www.ybmlms.com, DNS:www.ybmpine.com, DNS:www.ybmpublwiz.co.kr, DNS:www.ybmreaders.com, DNS:www.ybmreadingfarm.com, DNS:www.ybmsjpt.co.kr, DNS:www.ybmteachers.com, DNS:www.ybmthebiz.com, DNS:www.ybmtsc.co.kr, DNS:www.ybmuhak.com, DNS:www.ybmuniv.com, DNS:www.ybmvinu.com, DNS:ybm.toeicswt.co.kr, DNS:ybmdata.cyberesls.com, DNS:yboard.ybm.co.kr, DNS:yestab.ybmengloo.com, DNS:wowedu.ybmedu.com, DNS:www.ybmreaders.co.kr, DNS:ybmreaders.co.kr, DNS:www.ybmfarm.co.kr, DNS:ybmfarm.co.kr, DNS:wow.choekang.com, DNS:wowasp.choekang.com, DNS:www.ybmedu-jongno.com, DNS:www.ybmedu-e4u.com, DNS:www.ybmedu-shinchon.com, DNS:www.ybmedu-gangnam.com, DNS:www.ybmedu-keondae.com, DNS:www.ybmedu-incheon.com, DNS:www.ybmedu-dongsungro.com, DNS:www.ybmedu-sm.com, DNS:wowcs.ybmedu.com, DNS:wowcs2.ybmedu.com, DNS:web.ybmedu.com, DNS:mobile.ybmedu.com, DNS:liveweb.ybmedu.com, DNS:.ybmbiz.co.kr, DNS:.ybmclass.com, DNS:.ybmfarm.com, DNS:.ybmphoneclass.com, DNS:.ybmsisa.com, DNS:m.cyber.ybmnet.co.kr, DNS:m.exam.ybmnet.co.kr, DNS:ybmnet.co.kr
  • X509v3 Extended Key Usage:
  • TLS Web Server Authentication, TLS Web Client Authentication
  • X509v3 Authority Key Identifier:
  • F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
  • X509v3 Subject Key Identifier:
  • 4B:AB:C1:08:1E:A6:4F:61:CA:A3:06:35:AA:CD:92:8C:0A:4B:0B:CC
  • CT Precertificate SCTs:
  • 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 : Aug 26 00:56:10.279 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:27:83:FB:FE:B3:9E:59:74:E5:FC:37:77:
  • FF:53:06:03:0E:AB:F8:69:F8:2B:09:04:09:2F:80:45:
  • 7E:62:EE:D7:02:21:00:F6:1C:EB:6C:61:BB:10:BC:05:
  • B8:61:4F:16:4E:9E:40:43:04:F3:7B:9F:DF:E4:69:9D:
  • 26:B2:A3:32:B7:86:4D
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : AC:AB:30:70:6C:EB:EC:84:31:F4:13:D2:F4:91:5F:11:
  • 1E:42:24:43:B1:F2:A6:8C:4F:3C:2B:3B:A7:1E:02:C3
  • Timestamp : Aug 26 00:56:10.269 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:85:26:E7:5E:3E:AC:FB:57:6C:BD:38:
  • 06:52:87:A7:D2:A4:2E:C9:E2:FF:A3:11:E8:86:3E:38:
  • 7E:BA:DA:09:B1:02:21:00:AB:46:76:6D:89:E0:FA:F8:
  • 66:79:6A:8B:1A:B9:26:B7:88:69:4E:FC:AB:53:95:15:
  • 0E:D9:C2:53:38:94:08:94
  • 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 : Aug 26 00:56:10.244 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:CA:5D:14:90:C7:9E:C3:9A:3A:32:59:
  • F0:10:52:45:65:7C:B8:94:DA:53:92:E5:35:E7:37:0C:
  • 4D:52:CB:A8:10:02:20:19:EE:70:91:15:51:2F:E4:1D:
  • D3:6E:3C:CF:95:6D:DF:02:97:B3:4C:42:48:97:BA:6A:
  • 76:25:7C:18:46:82:D6
  • Signature Algorithm: sha256WithRSAEncryption
  • Signature Value:
  • 1a:f0:c9:a1:97:6b:9c:e0:0d:d1:d3:6a:4e:b6:10:3c:1c:bb:
  • 58:38:c0:70:fb:34:b8:d4:32:66:3b:99:9d:6a:46:50:c6:a5:
  • 86:25:94:2c:99:1b:5d:da:5e:44:80:4e:55:72:71:ca:05:00:
  • bb:95:4d:57:c3:2f:41:c5:41:4a:a6:d3:94:3d:55:87:4e:77:
  • a2:67:25:60:fd:65:4a:c6:d5:90:d7:ec:c2:5f:33:b2:d1:bd:
  • 0a:47:b5:a9:db:45:24:cc:3e:a2:2c:05:47:3e:a3:e9:85:2e:
  • 87:bf:7d:f1:8f:af:f6:db:72:da:b8:8e:f9:48:e2:a5:ff:87:
  • 7d:5d:ce:32:66:1b:a8:65:2e:b6:ab:a3:8c:e4:4b:25:03:b8:
  • 28:f4:ea:6c:3d:d5:9e:f0:86:bd:3a:e6:80:fd:29:02:63:e2:
  • fa:30:4f:60:e2:da:96:2d:df:de:05:8f:d0:cc:ce:c0:64:80:
  • 9b:e1:cd:07:46:9a:b5:87:6f:d6:43:4a:7f:4b:7b:ec:d4:39:
  • 2e:9d:63:7d:16:ea:2c:a3:4d:be:e0:5c:f7:5a:6d:f0:5d:de:
  • c9:6f:0a:6e:f8:e4:85:c0:94:ae:dc:7f:d3:09:e9:52:2f:51:
  • 03:e9:87:73:a6:76:1b:71:ad:34:60:31:6b:06:bb:bb:98:72:
  • 2b:b4:17:84

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