S1.co.kr ranking shows that the page is at position 511,885 over the world, while the bulk of its audience is from Korea, where it ranks 26,133.
It is beneficial to s1.co.kr that their hosting company CLOUDFLARENET - Cloudflare, Inc., US servers are located in Korea, as that reduces page load time for the majority of their users. See the list of other webpages hosted on CLOUDFLARENET - Cloudflare, Inc., US servers.
In terms of rank-to-traffic ratio, s1.co.kr has 448 unique users per day, viewing 1,390 pages. The rank based value of s1.co.kr is 12,627 USD. Every user makes 3.32 pageviews on average.
S1.co.kr boasts a link base consisting of 300 referring domains and 357 external backlinks, as revealed by the data obtained from web network scanning.
S1.co.kr top-level domain belongs to .KR domain zone. Check other webpages in .KR zone.
According the last verification test in April 02, 2023, s1.co.kr has an expired wildcard SSL certificate issued by Sectigo Limited (expired on November 24, 2023). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by Sectigo Limited.
Based on data from Google Safe Browsing, Google Safe Search, Symantec and Web of Trust s1.co.kr is a fairly safe domain.
According the Mobile-Friendly test by Google s1.co.kr is nice optimized for mobile devices and tablets, however the webpage speed could be improved.





| Domain | *.s1.co.kr |
| Issuer Organization | Sectigo Limited |
| Issuer | Sectigo RSA Organization Validation Secure Server CA |
| Algorithm | RSA-SHA256 |
| Valid form | 10/24/2022 |
| Expiration | 11/24/2023 |
| Signed | Certificate is not self signed |
| Additional Domains |
*.s1.co.kr s1.co.kr |
Alexa Rank shows how popular s1.co.kr is in comparison with other sites. The most popular site has Alexa Rank equals 1. If s1.co.kr has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to s1.co.kr and pageviews on s1.co.kr over the past 3 months.
ASN ID: 13335
ASN Title: CLOUDFLARENET - Cloudflare, Inc., USLast Update: 12/25/2025
#
# 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.
#
query : s1.co.kr
# KOREAN(UTF8)
도메인이름 : s1.co.kr
등록인 : ㈜에스원
책임자 : (주)에스원
책임자 전자우편 : thwan12.kim@samsung.com
등록일 : 1996. 10. 01.
최근 정보 변경일 : 2017. 07. 10.
사용 종료일 : 2025. 10. 15.
정보공개여부 : N
등록대행자 : (주)후이즈(http://whois.co.kr)
DNSSEC : 미서명
1차 네임서버 정보
호스트이름 : red.samsung.co.kr
IP 주소 : 203.241.135.111
2차 네임서버 정보
호스트이름 : green.samsung.co.kr
IP 주소 : 211.189.122.246
네임서버 이름이 .kr이 아닌 경우는 IP주소가 보이지 않습니다.
# ENGLISH
Domain Name : s1.co.kr
Registrant : S1 Corporation
Administrative Contact(AC) : S1 Corporation
AC E-Mail : thwan12.kim@samsung.com
Registered Date : 1996. 10. 01.
Last Updated Date : 2017. 07. 10.
Expiration Date : 2025. 10. 15.
Publishes : N
Authorized Agency : Whois Corp.(http://whois.co.kr)
DNSSEC : unsigned
Primary Name Server
Host Name : red.samsung.co.kr
IP Address : 203.241.135.111
Secondary Name Server
Host Name : green.samsung.co.kr
IP Address : 211.189.122.246
- KISA/KRNIC WHOIS Service -
| Host | A Record | TTL |
|---|---|---|
| s1.co.kr | 112.106.21.140 | 300 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| s1.co.kr | s1.co.kr | 10 | 300 |
| Host | NS Record | TTL |
|---|---|---|
| s1.co.kr | green.samsung.co.kr | 300 |
| s1.co.kr | red.samsung.co.kr | 300 |
| Host | TXT Record | TTL |
|---|---|---|
| s1.co.kr | v=spf1 ip4:112.106.21.220 ip4:112.106.21.221 ip4:112.106.21.222 ~all | 300 |
red.samsung.co.kr
TTL: 300
Email address: root.s1.co.kr
Serial: 2018052414
Refresh: 10800
Retry: 3600
Expire: 2419200
Minimum: 300
Last tested: 06/03/2017

| Total Resources | 82 |
| Number of Hosts | 8 |
| Static Resources | 73 |
| JavaScript Resources | 16 |
| CSS Resources | 4 |
Last tested: 06/01/2017


| Total Resources | 68 |
| Number of Hosts | 15 |
| Static Resources | 52 |
| JavaScript Resources | 18 |
| CSS Resources | 3 |