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: 1.61 sec.
Last Checked: 01/23/2023
Over the time i21st.cn has been ranked as high as 5,181 in the world, while most of its traffic comes from China, where it reached as high as 7,969 position.
I21st.cn receives about 3,253 unique visitors and 8,458 pageviews per day. The estimated value of i21st.cn is 148,920 USD. Each unique visitor makes about 2.6 pageviews on average.
I21st.cn is registered under .CN top-level domain. Check other websites in .CN zone.
At the time of the last check (July 07, 2019) i21st.cn has an expired wildcard SSL certificate (expired on January 20, 2021).
According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust i21st.cn is quite a safe domain.
Mobile-Friendly test indicates that i21st.cn is well optimized for mobile and tablet devices.
Audience Geography. Where are i21st.cn visitors located?
| Country | Rank |
|---|---|
 China CN | 7969 |
| Hong Kong HK | 25815 |
| Taiwan TW | 42438 |
| United States US | 310976 |
| Country | Percent of Pageviews |
|---|---|
| China CN | 96.1% |
| United States US | 0.9% |
| Hong Kong HK | 0.6% |
| Taiwan TW | 0.5% |
| Other | 1.9% |
| Country | Percent of Visitors |
|---|---|
| China CN | 87.2% |
| United States US | 3% |
| Hong Kong HK | 1.8% |
| Taiwan TW | 1.5% |
| Other | 6.4% |
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?
| 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% |
| 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% |
| Period | Global Rank | Global Rank Delta |
|---|---|---|
| past 3 months | 79833 | 23504 |
| past month | 65134 | -34537 |
| past week | 47944 | -15287 |
| yesterday | 53769 | 14364 |
Alexa Rank shows how popular i21st.cn is in comparison with other sites. The most popular site has Alexa Rank equals 1. If i21st.cn 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 i21st.cn and pageviews on i21st.cn over the past 3 months.
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.
"i21st.cn" is not a phishing page.
"i21st.cn" does not install unwanted software.
"i21st.cn" 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.
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 | GlobalSign Organization Validation CA - SHA256 - G2 |
| Algorithm | RSA-SHA256 |
| Valid form | 10/25/2017 |
| Expiration | 01/20/2021 |
| 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: 10/03/2023
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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
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person: Weijian Li
address: 53A Xibianmennei Ave, Xuanwu Distract, Beijing, China , BJ 100031 CN
country: CN
phone: +86-10-63604841
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% 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: 中报国际文化传媒（北京）有限公司
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: 2023-02-24 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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