21vianet.com ranking shows that the page is at position 104,096 over the world, while the bulk of its audience is from China, where it ranks 12,859.
It is beneficial to 21vianet.com that their hosting company CHINANET-IDC-SN China Telecom (Group), CN servers are located in China, as that reduces page load time for the majority of their users. See the list of other webpages hosted on CHINANET-IDC-SN China Telecom (Group), CN servers.
In terms of rank-to-traffic ratio, 21vianet.com has 1,897 unique users per day, viewing 6,822 pages. The rank based value of 21vianet.com is 126,270 USD. Every user makes 3.89 pageviews on average.
21vianet.com boasts a link base consisting of 303 referring domains and 332 external backlinks, as revealed by the data obtained from web network scanning.
21vianet.com top-level domain belongs to .COM domain zone. Check other webpages in .COM zone.
According the last verification test in April 28, 2021, 21vianet.com has an invalid SSL certificate. Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by TrustAsia Technologies, Inc..
Based on data from Google Safe Browsing, Google Safe Search, Symantec and Web of Trust 21vianet.com is a fairly safe domain.
According the Mobile-Friendly test by Google 21vianet.com is nice optimized for mobile devices and tablets, however the webpage speed could be improved.





| WARNING! | Certificate download error. Previous scan results are shown below. |
| Domain | 21vianet.com |
| Issuer Organization | TrustAsia Technologies, Inc. |
| Issuer | TrustAsia TLS RSA CA |
| Algorithm | RSA-SHA256 |
| Valid form | 04/19/2021 |
| Expiration | 04/18/2022 |
| Signed | Certificate is not self signed |
| Additional Domains |
21vianet.com www.21vianet.com |
Alexa Rank shows how popular 21vianet.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If 21vianet.com 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 21vianet.com and pageviews on 21vianet.com over the past 3 months.
ASN ID: 4835
ASN Title: CHINANET-IDC-SN China Telecom (Group), CNLast Update: 12/17/2025
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS4608 - AS4864'
as-block: AS4608 - AS4864
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2008-09-04T06:40:26Z
source: APNIC
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
tech-c: AH256-AP
nic-hdl: HM20-AP
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 'AS4835'
% Abuse contact for 'AS4835' is 'anti-spam@ns.chinanet.cn.net'
aut-num: AS4835
as-name: CHINANET-IDC-SN
descr: China Telecom (Group)
descr: IDC center xi'an node
country: CN
import: from AS4134
action pref=100;
accept ANY
import: from AS4815
action pref=100;
accept ANY
import: from AS4816
action pref=100;
accept ANY
export: to AS4134
announce AS4835
export: to AS4815
announce AS4835
export: to AS4816
announce AS4835
admin-c: JS183-AP
tech-c: JS183-AP
mnt-by: MAINT-CHINANET
mnt-irt: IRT-CHINANET-CN
last-modified: 2015-12-01T22:12:54Z
source: APNIC
irt: IRT-CHINANET-CN
address: No.31 ,jingrong street,beijing
address: 100032
e-mail: anti-spam@ns.chinanet.cn.net
abuse-mailbox: anti-spam@ns.chinanet.cn.net
admin-c: CH93-AP
tech-c: CH93-AP
auth: # Filtered
mnt-by: MAINT-CHINANET
last-modified: 2010-11-15T00:31:55Z
source: APNIC
person: jun shen
nic-hdl: JS183-AP
e-mail: shenjun@cndata.com
address: China Telecom
address: No.31,Jing-rong Street,
address: 100032,beijing China
phone: +86-10-66027112
fax-no: +86-10-666027334
country: CN
mnt-by: MAINT-CHINANET
last-modified: 2008-09-04T07:29:18Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US3)
Domain Name: 21VIANET.COM
Registry Domain ID: 24815344_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2023-04-15T05:03:38Z
Creation Date: 2000-04-13T02:28:25Z
Registry Expiry Date: 2028-04-13T02:28:25Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS.INTERCOM.COM.CN
Name Server: NS1.INTERCOM.COM.CN
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-19T09:56:26Z
| Host | A Record | TTL |
|---|---|---|
| ;; | no | connection |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| ;; | servers | no | connection |
| Host | NS Record | TTL |
|---|---|---|
| ;; | no | connection |
| Host | TXT Record | TTL |
|---|---|---|
| ;; | connection |
no
TTL: connection
Email address: servers
Serial: could
Refresh: be
Retry: reached
Expire:
Minimum:
Last tested: 10/27/2018

| Total Resources | 109 |
| Number of Hosts | 4 |
| Static Resources | 106 |
| JavaScript Resources | 16 |
| CSS Resources | 7 |
Last tested: 10/27/2018


| Total Resources | 111 |
| Number of Hosts | 5 |
| Static Resources | 107 |
| JavaScript Resources | 16 |
| CSS Resources | 7 |