pku.edu.cn - 北京大学

Quick Summary

Online Status

Online

Server IP address resolved: Yes
Http response code: 200
Response time: 1.30 sec.
Last Checked: 01/20/2023

Over the time pku.edu.cn has been ranked as high as 1,302 in the world, while most of its traffic comes from China, where it reached as high as 364 position.

Pku.edu.cn receives about 43,732 unique visitors and 242,713 pageviews per day. The estimated value of pku.edu.cn is 3,193,020 USD. Each unique visitor makes about 5.55 pageviews on average.

Pku.edu.cn is registered under .CN top-level domain. Check other websites in .CN zone.

At the time of the last check (July 04, 2019) pku.edu.cn has an invalid SSL certificate.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust pku.edu.cn is quite a safe domain.

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

Pku.edu.cn General Information

Global Rank

2,725

Average Load Time

3.27sec

Links In Count

7,233

Website Value

$3.2 M

Audience Geography. Where are pku.edu.cn visitors located?

Country	Rank
China CN	364
Japan JP	7615
United States US	47683

Country	Percent of Pageviews
China CN	96%
Japan JP	1.7%
United States US	0.5%
Other	1.9%

Country	Percent of Visitors
China CN	93.4%
Japan JP	3.1%
United States US	0.9%
Other	2.6%

Where do visitors go on pku.edu.cn?

Subdomain	Pageviews
mail.pku.edu.cn	14.44%
bbs.pku.edu.cn	9.03%
pku.edu.cn	8.38%
elective.pku.edu.cn	7.53%
its.pku.edu.cn	6.29%
lib.pku.edu.cn	3.41%
iaaa.pku.edu.cn	3.1%
portal.pku.edu.cn	3.01%
dean.pku.edu.cn	2.46%
other	42.36%

Subdomain	Pageviews per User
gse.pku.edu.cn	10
hist.pku.edu.cn	10
elective.pku.edu.cn	9.8
sfl.pku.edu.cn	9
cbi.pku.edu.cn	8
cwsf.pku.edu.cn	7
wcp2018.pku.edu.cn	7
reagent.pku.edu.cn	7
shehui.pku.edu.cn	7
chinese.pku.edu.cn	6
other	2.9

Subdomain	Reach
mail.pku.edu.cn	27.78%
bbs.pku.edu.cn	26.95%
pku.edu.cn	21.86%
its.pku.edu.cn	18.35%
iaaa.pku.edu.cn	15.93%
lib.pku.edu.cn	6.02%
portal.pku.edu.cn	5.8%
dean.pku.edu.cn	4.63%
elective.pku.edu.cn	4.24%
pkunews.pku.edu.cn	3.21%
other	51.31%

How popular is pku.edu.cn?

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	3308	-42	240	-3.74%
30	3478	152	230	-5.203%
7	7104	3252	120	-43.89%
1	10611	2736	80	-23.72%

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1962	0	359	-6.169%	5.55	-2.46%
30	2120	-134	338	4%	5.5	10%
7	3391	1566	22	-43.89%	7	0.1%
1	7157	3320	11	-43.47%	5	-25.84%

Period	Global Rank	Global Rank Delta
past 3 months	2725	59
past month	2880	49
past week	5462	2473
yesterday	8963	2878

Alexa Rank shows how popular pku.edu.cn is in comparison with other sites. The most popular site has Alexa Rank equals 1. If pku.edu.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 pku.edu.cn and pageviews on pku.edu.cn over the past 3 months.

Pku.edu.cn Safety Information

Overview

Last Updated: 04/25/2024

Overall result - "pku.edu.cn" 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: 03/21/2024

pku.edu.cn is safe.

Norton ConnectSafe evaluates pku.edu.cn for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 02/06/2019

pku.edu.cn 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 "pku.edu.cn".
"pku.edu.cn" is not a phishing page.
"pku.edu.cn" does not install unwanted software.
"pku.edu.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.

Site Advisor

Last Updated: 02/22/2021

pku.edu.cn is safe.

McAfee assesses pku.edu.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 pku.edu.cn for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/09/2019

pku.edu.cn child safety isvery good.

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

SSL Information

SSL Checker Tool

WARNING!	Certificate download error. Previous scan results are shown below.
Domain	*.pku.edu.cn
Issuer	Secure Site CA
Algorithm	RSA-SHA256
Valid form	10/24/2018
Expiration	01/22/2021
Signed	Certificate is not self signed
Additional Domains	*.pku.edu.cn pku.edu.cn

Pku.edu.cn Server Information

Server Location

Geolocation Tool

Beijing

China

ASN Information

ASN Lookup Tool

ASN ID: 24349
ASN Title: CNGI-BJ-IX3-AS-AP CERNET2 IX at Peking University, CN

Last Update: 10/02/2023

ASN Whois

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS23552 - AS24575'

as-block: AS23552 - AS24575
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
remarks: AS23889 has been transfered to AfriNIC
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-09-29T06:04:16Z
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 'AS24298 - AS24400'

as-block: AS24298 - AS24400
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 'AS24349'

% Abuse contact for 'AS24349' is 'abuse@net.edu.cn'

aut-num: AS24349
as-name: CNGI-BJ-IX3-AS-AP
descr: CERNET2 IX at Peking University
descr: CERNET Center
descr: Beijing 100084, China
country: CN
import: from AS23910
action pref=10;
accept ANY
import: from AS4134
action pref=10;
accept ANY
import: from AS4837
action pref=10;
accept ANY
import: from AS7497
action pref=10;
accept ANY
import: from AS9808
action pref=10;
accept ANY
import: from AS9800
action pref=10;
accept ANY
import: from AS9394
action pref=10;
accept ANY
import: from AS23912
action pref=10;
accept ANY
import: from AS4538
action pref=10;
accept ANY
import: from AS9407
action pref=10;
accept ANY
import: from AS17735
action pref=10;
accept ANY
export: to AS23910
announce ANY
export: to AS4134
announce ANY
export: to AS4837
announce ANY
export: to AS7497
announce ANY
export: to AS9808
announce ANY
export: to AS9800
announce ANY
export: to AS9394
announce ANY
export: to AS23912
announce ANY
export: to AS4538
announce ANY
export: to AS9407
announce ANY
export: to AS17735
announce ANY
default: to AS23910
action pref=10;
networks ANY
admin-c: CER-AP
tech-c: CER-AP
remarks: Multihome member of CERNET
mnt-by: APNIC-HM
mnt-irt: IRT-CERNET-AP
mnt-routes: MAINT-CERNET-AP
last-modified: 2018-11-08T00:22:55Z
source: APNIC

irt: IRT-CERNET-AP
address: Network Research Center,
address: Main Bldg, Tsinghua Univ
address: Beijing 100084, China
phone: +86-10-62784301
fax-no: +86-10-62785933
e-mail: abuse@net.edu.cn
abuse-mailbox: abuse@net.edu.cn
admin-c: CER-AP
tech-c: CER-AP
auth: # Filtered
remarks: timezone GMT+8
remarks: http://www.ccert.edu.cn
mnt-by: MAINT-CERNET-AP
last-modified: 2010-11-26T03:14:01Z
source: APNIC

role: CERNET Helpdesk
address: Room 224, Main Building
address: Tsinghua University
address: Beijing 100084, China
country: CN
phone: +86-10-6278-4049
fax-no: +86-10-6278-5933
e-mail: cernet-helpdesk-ip@net.edu.cn
remarks: abuse@net.edu.cn
admin-c: XL1-CN
tech-c: SZ2-AP
nic-hdl: CER-AP
remarks: Point of Contact for admin-c
mnt-by: MAINT-CERNET-AP
last-modified: 2011-12-06T00:10:30Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US3)

Pku.edu.cn Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain Whois

Out of this registry.

DNS Records

DNS Lookup Tool

Host	A Record	TTL
pku.edu.cn	162.105.129.103	300

Host	MX Record	Priority	TTL
;;	servers	no	connection

Host	NS Record	TTL
pku.edu.cn	DNS2.pku.edu.cn	300
pku.edu.cn	DNS.pku.edu.cn	300
pku.edu.cn	ns.pku.edu.cn	300

Host	TXT Record	TTL
pku.edu.cn	v=spf1 redirect=spf.pku.edu.cn	21600

no
TTL: connection
Email address: servers
Serial: could
Refresh: be
Retry: reached
Expire:
Minimum:

Pku.edu.cn HTML Validation

HTML Validation Tool

Errors

Attribute “mce_href” not allowed on element “link” at this point.

Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Duplicate ID “students”.

Duplicate ID “facultystaff”.

Duplicate ID “alumni”.

Duplicate ID “parents”.

Duplicate ID “visitors”.

Duplicate ID “jobs”.

Duplicate ID “giving”.

Duplicate ID “portal”.

Duplicate ID “its”.

Duplicate ID “bbs”.

The “width” attribute on the “table” element is obsolete. Use CSS instead.

The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.

The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.

The “border” attribute on the “table” element is obsolete. Use CSS instead.

Duplicate ID “form_Searchword”.

The “width” attribute on the “td” element is obsolete. Use CSS instead.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Bad value “” for attribute “src” on element “img”: Must be non-empty.

Element “li” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)

Stray start tag “div”.

Cannot recover after last error. Any further errors will be ignored.

Warnings

The “type” attribute is unnecessary for JavaScript resources.

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

The first occurrence of ID “students” was here.

The first occurrence of ID “facultystaff” was here.

The first occurrence of ID “alumni” was here.

The first occurrence of ID “parents” was here.

The first occurrence of ID “visitors” was here.

The first occurrence of ID “jobs” was here.

The first occurrence of ID “giving” was here.

The first occurrence of ID “portal” was here.

The first occurrence of ID “its” was here.

The first occurrence of ID “bbs” was here.

The first occurrence of ID “form_Searchword” was here.

A table row was 2 columns wide, which is less than the column count established by the first row (3).

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Empty heading.

Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.

Pku.edu.cn Desktop Insights

Desktop Page Insights Tool

Last tested: 02/08/2018

Desktop

Desktop Speed

Optimize images

Leverage browser caching

Enable compression

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Minify JavaScript

Minify CSS

Minify HTML

Desktop Resource Breakdown

Total Resources	116
Number of Hosts	4
Static Resources	99
JavaScript Resources	19
CSS Resources	8

Pku.edu.cn Mobile Insights

Mobile Page Insights Tool

Last tested: 01/23/2018

Mobile

Mobile Usability

99%

Size tap targets appropriately

Mobile Speed

25%

Optimize images

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Enable compression

Minify JavaScript

Minify CSS

Minify HTML

Mobile Resource Breakdown

Total Resources	110
Number of Hosts	4
Static Resources	94
JavaScript Resources	19
CSS Resources	8

Pku.edu.cn Typos

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www.pku.net
www.pku.org
www.pku.info
www.pku.biz
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Pku.edu.cn 北京大学

北京大学

Quick Summary

Pku.edu.cn General Information

Pku.edu.cn Alexa Rank History

Pku.edu.cn Safety Information

Pku.edu.cn Server Information

Pku.edu.cn Domain Name Information

Pku.edu.cn HTML Validation

Pku.edu.cn Desktop Insights

Pku.edu.cn Mobile Insights

Pku.edu.cn Nearest Competitors

Pku.edu.cn Typos