Ef.co.kr EF Education First | 코리아

50년 역사의 세계 최대 교육 기업 EF는 여러분이 세계 무대에서 꿈을 펼칠 수 있도록 문화 교류와 학업적 성취, 여행 등을 결합한 어학연수와 유학 프로그램을 제공합니다.

Online Status
UNKNOWN

Over the time ef.co.kr has been ranked as high as 30,866 in the world.

Ef.co.kr receives about 1,619 unique visitors and 1,619 pageviews per day. The estimated value of ef.co.kr is 21,900 USD. Each unique visitor makes about 1 pageviews on average.

Ef.co.kr is registered under .KR top-level domain. Check other websites in .KR zone.

At the time of the last check (August 08, 2024) ef.co.kr has an expired SSL certificate issued by Google Trust Services (expired on October 13, 2024). Check other websites using SSL certificates issued by Google Trust Services.

According to Google Safe Browsing, Google Safe Search and Symantec ef.co.kr is quite a safe domain.

Mobile-Friendly test indicates that ef.co.kr is well optimized for mobile and tablet devices, however website page loading time could be improved.


Global Rank
427,079
Average Load Time
0.00sec
Links In Count
49
Website Value
$21,900

Overview
Last Updated: 05/31/2025
Overall result - "ef.co.kr" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 04/02/2025
ef.co.kr is safe.

Norton ConnectSafe evaluates ef.co.kr for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 09/14/2019
ef.co.kr is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "ef.co.kr".
"ef.co.kr" is not a phishing page.
"ef.co.kr" does not install unwanted software.
"ef.co.kr" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 03/02/2021
ef.co.kr is safe.

McAfee assesses ef.co.kr for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze ef.co.kr for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 05/31/2025
ef.co.kr child safety isunknown.

The WOT calculates reputation of the ef.co.kr. This reputation system receives ratings from users and information from third-party sources, assesses the ef.co.kr for safety features and confirms, whether ef.co.kr is suitable for children.

SSL Information
Domain ef.co.kr
Issuer OrganizationGoogle Trust Services
Issuer WE1
Algorithm ecdsa-with-SHA256
Valid form 07/15/2024
Expiration 10/13/2024
SignedCertificate is not self signed
Additional Domains ef.co.kr
*.ef.co.kr
Server Location

Not Found

ASN Information

ASN ID: 13335
ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 12/23/2024

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 13335
ASName: CLOUDFLARENET
ASHandle: AS13335
RegDate: 2010-07-14
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/autnum/13335


OrgName: Cloudflare, Inc.
OrgId: CLOUD14
Address: 101 Townsend Street
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2010-07-09
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/entity/CLOUD14

OrgTechHandle: ADMIN2521-ARIN
OrgTechName: Admin
OrgTechPhone: +1-650-319-8930
OrgTechEmail: rir@cloudflare.com
OrgTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

OrgAbuseHandle: ABUSE2916-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-650-319-8930
OrgAbuseEmail: abuse@cloudflare.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

OrgNOCHandle: NOC11962-ARIN
OrgNOCName: NOC
OrgNOCPhone: +1-650-319-8930
OrgNOCEmail: noc@cloudflare.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RNOCHandle: NOC11962-ARIN
RNOCName: NOC
RNOCPhone: +1-650-319-8930
RNOCEmail: noc@cloudflare.com
RNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RTechHandle: ADMIN2521-ARIN
RTechName: Admin
RTechPhone: +1-650-319-8930
RTechEmail: rir@cloudflare.com
RTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

RAbuseHandle: ABUSE2916-ARIN
RAbuseName: Abuse
RAbusePhone: +1-650-319-8930
RAbuseEmail: abuse@cloudflare.com
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

WHOIS

query : ef.co.kr

# KOREAN(UTF8)

도메인이름 : ef.co.kr
등록인 : (주) 지선소프트
등록인 주소 : 경기도 성남시 분당구 삼평동 670번지 유스페이스1 B동 4층
등록인 우편번호 : 137920
책임자 : Melbourne IT DBS, Inc.
책임자 전자우편 : domainadmintl@ef.com
책임자 전화번호 : 82-2-345-5210
등록일 : 1999. 04. 27.
최근 정보 변경일 : 2021. 12. 13.
사용 종료일 : 2022. 10. 15.
정보공개여부 : Y
등록대행자 : (주)가비아(http://www.gabia.co.kr)
DNSSEC : 미서명
등록정보 보호 : clientTransferProhibited

1차 네임서버 정보
호스트이름 : anirban.ns.cloudflare.com

2차 네임서버 정보
호스트이름 : pam.ns.cloudflare.com

네임서버 이름이 .kr이 아닌 경우는 IP주소가 보이지 않습니다.

# ENGLISH

Domain Name : ef.co.kr
Registrant : EF Education First Korea
Registrant Address : 4Fl. B Tower Kyobo Tower Bldg., 1303-22 Seocho-Dong, Seocho-Gu
Registrant Zip Code : 137920
Administrative Contact(AC) : Domain Administrator
AC E-Mail : domainadmintl@ef.com
AC Phone Number : 82-2-345-5210
Registered Date : 1999. 04. 27.
Last Updated Date : 2021. 12. 13.
Expiration Date : 2022. 10. 15.
Publishes : Y
Authorized Agency : Gabia, Inc.(http://www.gabia.co.kr)
DNSSEC : unsigned
Domain Status : clientTransferProhibited

Primary Name Server
Host Name : anirban.ns.cloudflare.com

Secondary Name Server
Host Name : pam.ns.cloudflare.com

- KISA/KRNIC WHOIS Service -

DNS Records
HostA RecordTTL
HostMX RecordPriorityTTL
HostNS RecordTTL
HostTXT RecordTTL
Errors
Warnings

Last tested: 12/04/2017

Desktop
Desktop Speed
69%
Desktop Resource Breakdown
Total Resources68
Number of Hosts25
Static Resources31
JavaScript Resources26
CSS Resources5

Last tested: 12/04/2017

Mobile
Mobile Usability
99%
Mobile Speed
45%
Mobile Resource Breakdown
Total Resources71
Number of Hosts26
Static Resources33
JavaScript Resources26
CSS Resources5
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