I21st.cn 21英语网-21世纪报官方网站
21英语网是极具原创性的英语学习和教学网站，拥有独家的英语学习资料及教育资料，专注于打造最具人气的英语学习交流平台，为全国英语学习者和教育者提供专业服务。
Server IP address resolved: Yes
Http response code: 200
Response time: 2.02 sec.
Last Checked: 01/24/2025
I21st.cn attracts 3,481 unique visitors daily, generating 9,050 pageviews. The estimated value of i21st.cn is 159,344 USD. Each visitor views approximately 2.78 pages on average.
According to Majestic's traffic estimates, i21st.cn ranks 5,181 globally, with the majority of its visitors coming from China, where it holds the 7,969 position.
It is beneficial for i21st.cn that their data center (provided by China Mobile) is located in China, as this helps reduce page load time for most visitors.
See the list of other websites hosted by China Mobile.
I21st.cn is registered with the .CN top-level domain. Explore additional websites within the .CN zone.
The last inspection on (August 20, 2024), confirms that i21st.cn holds a valid and current wildcard SSL certificate issued by GlobalSign nv-sa expiring on February 03, 2025. Click the "Refresh" button in the Safety Information section for updated SSL details. See the list of websites using SSL certificates issued by GlobalSign nv-sa.
According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust i21st.cn appears to be a safe domain.
Based on Google's Mobile-Friendly test, i21st.cn is optimized for mobile and tablet devices.
Audience Geography. Where are i21st.cn visitors located?
| Country | Visitors |
|---|---|
 China CN | 87.2% |
| United States US | 3% |
| Hong Kong HK | 1.8% |
| Taiwan TW | 1.5% |
| Other | 6.4% |
| Country | Pageviews |
|---|---|
| China CN | 96.1% |
| United States US | 0.9% |
| Hong Kong HK | 0.6% |
| Taiwan TW | 0.5% |
| Other | 1.9% |
| Country | Rank |
|---|---|
| China CN | 7969 |
| Hong Kong HK | 25815 |
| Taiwan TW | 42438 |
| United States US | 310976 |
Where do visitors go on i21st.cn?
| Subdomain | Pageviews |
|---|---|
| paper.i21st.cn | 38.27% |
| i21st.cn | 20.41% |
| elt.i21st.cn | 14.68% |
| contest.i21st.cn | 6.85% |
| m.i21st.cn | 3.08% |
| other | 16.71% |
| Subdomain | Pageviews per User |
|---|---|
| paper.i21st.cn | 5 |
| elt.i21st.cn | 4 |
| i21st.cn | 1.8 |
| m.i21st.cn | 1 |
| contest.i21st.cn | 1 |
| Subdomain | Reach |
|---|---|
| i21st.cn | 38.82% |
| paper.i21st.cn | 24.62% |
| contest.i21st.cn | 18.15% |
| elt.i21st.cn | 12.28% |
| m.i21st.cn | 10.24% |
How popular is i21st.cn?
| Period | Global Rank | Global Rank Delta |
|---|---|---|
| past 3 months | 79833 | 23504 |
| past month | 65134 | -34537 |
| past week | 47944 | -15287 |
| yesterday | 53769 | 14364 |
| Days | Pageviews Rank | Pageviews Rank Delta | Pageviews per Million | Pageviews per Million Delta | Pageviews per User | Pageviews per User Delta |
|---|---|---|---|---|---|---|
| 90 | 91403 | 38726 | 61 | -48.295% | 2.6 | -28.93% |
| 30 | 64812 | -56697 | 93 | 120% | 3.3 | 50% |
| 7 | 38031 | -15350 | 18 | 50% | 4.9 | 10% |
| 1 | 91667 | 62714 | 7 | -72.989% | 1 | -74.653% |
| Days | Reach Rank | Reach Rank Delta | Reach per Million | Reach per Million Delta |
|---|---|---|---|---|
| 90 | 80010 | 18510 | 88 | -27.33% |
| 30 | 69759 | -26857 | 10 | 50% |
| 7 | 56367 | -16431 | 13 | 30% |
| 1 | 45298 | -2948 | 20 | 6% |
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 ConnectSafe evaluates i21st.cn for any unsafe and insecure content. The results are critical for families with young children.
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.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
McAfee assesses i21st.cn 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 i21st.cn for mature or inappropriate content, only security checks are evaluated.
The WOT calculates reputation of the i21st.cn. This reputation system receives ratings from users and information from third-party sources, assesses the i21st.cn for safety features and confirms, whether i21st.cn is suitable for children.
| Domain | *.i21st.cn |
| Issuer Organization | GlobalSign nv-sa |
| Issuer | GlobalSign RSA OV SSL CA 2018 |
| Algorithm | RSA-SHA256 |
| Valid form | 01/03/2024 |
| Expiration | 02/03/2025 |
| Signed | Certificate is not self signed |
| Additional Domains |
*.i21st.cn owa.i21st.cn mail.i21st.cn autodiscover.i21st.cn www.i21st.cn i21st.cn |
ASN ID: 9808
ASN Title: China Mobile
Last Update: 07/18/2024
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS9216 - AS10239'
as-block: AS9216 - AS10239
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
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tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
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role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
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remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC
% Information related to 'AS9800 - AS9819'
as-block: AS9800 - AS9819
descr: CNNIC ASN block
country: CN
remarks: These AS numbers are further assigned by CNNIC
remarks: to CNNIC members and end-users in China
admin-c: IPAS1-AP
tech-c: IPAS1-AP
mnt-by: APNIC-HM
mnt-lower: MAINT-CNNIC-AP
last-modified: 2008-09-04T06:40:26Z
source: APNIC
role: CNNIC IPAS CONFEDERATION
address: No.4, Zhongguancun No.4 South Street,
address: Haidian District, Beijing
country: CN
phone: +86-010-58813000
fax-no: +86-010-58813075
e-mail: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
nic-hdl: IPAS1-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-09-12T07:40:01Z
source: APNIC
% Information related to 'AS9808'
% Abuse contact for 'AS9808' is 'abuse@chinamobile.com'
aut-num: AS9808
as-name: CMNET-GD
descr: Guangdong Mobile Communication Co.Ltd.
country: CN
org: ORG-CM1-AP
import: from AS4134
action pref=10;
accept ANY
import: from AS4637
action pref=10;
accept ANY
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action pref=10;
accept ANY
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announce AS9808
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announce AS9808
admin-c: WL113-AP
tech-c: WL113-AP
mnt-by: MAINT-CN-CMCC
mnt-irt: IRT-CHINAMOBILE-CN
last-modified: 2017-10-16T00:26:24Z
source: APNIC
irt: IRT-CHINAMOBILE-CN
address: China Mobile Communications Corporation
address: 29, Jinrong Ave., Xicheng District, Beijing, 100032
e-mail: abuse@chinamobile.com
abuse-mailbox: abuse@chinamobile.com
admin-c: CT74-AP
tech-c: CT74-AP
auth: # Filtered
mnt-by: MAINT-CN-CMCC
last-modified: 2014-11-18T02:41:02Z
source: APNIC
organisation: ORG-CM1-AP
org-name: China Mobile
country: CN
address: 29, Jinrong Ave.
phone: +86-10-5260-6688
fax-no: +86-10-5261-6187
e-mail: hostmaster@chinamobile.com
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2017-08-23T12:56:36Z
source: APNIC
person: Weijian Li
address: 53A Xibianmennei Ave, Xuanwu Distract, Beijing, China , BJ 100031 CN
country: CN
phone: +86-10-63604841
fax-no: +86-10-63604946
e-mail: lidaiyong@chinamobile.com
nic-hdl: WL113-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2008-09-04T07:29:19Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)
Domain Name: i21st.cn
ROID: 20090224s10001s39958556-cn
Domain Status: clientTransferProhibited
Registrant: 21世纪报社
Registrant Contact Email: wangrujian@21stcentury.com.cn
Sponsoring Registrar: 阿里云计算有限公司（万网）
Name Server: vip3.alidns.com
Name Server: vip4.alidns.com
Registration Time: 2009-02-24 14:39:15
Expiration Time: 2026-02-24 14:39:15
DNSSEC: unsigned
| Host | A Record | TTL |
|---|---|---|
| i21st.cn | 111.13.49.202 | 3600 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| i21st.cn | mail.i21st.cn | 1 | 3600 |
| Host | NS Record | TTL |
|---|---|---|
| i21st.cn | dns30.hichina.com | 86400 |
| i21st.cn | dns29.hichina.com | 86400 |
| Host | TXT Record | TTL |
|---|---|---|
| i21st.cn | v=spf1 a mx ~all | 3600 |
dns29.hichina.com
TTL: 600
Email address: hostmaster.hichina.com
Serial: 1
Refresh: 3600
Retry: 1200
Expire: 3600
Minimum: 600
Last tested: 12/12/2019
| Total Resources | 61 |
| Number of Hosts | 5 |
| Static Resources | 50 |
| JavaScript Resources | 10 |
| CSS Resources | 2 |
Last tested: 12/10/2019
| Total Resources | 6 |
| Number of Hosts | 2 |
| Static Resources | 3 |
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