ndlib.cn - 数字图书馆推广工程

Quick Summary

Online Status

UNKNOWN

Over the time ndlib.cn has been ranked as high as 28,502 in the world.

Ndlib.cn receives about 244 unique visitors and 488 pageviews per day. The estimated value of ndlib.cn is 5,840 USD. Each unique visitor makes about 2 pageviews on average.

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

At the time of the last check (April 29, 2024) ndlib.cn has an invalid SSL certificate.

According to Google Safe Browsing, Google Safe Search and Symantec ndlib.cn is quite a safe domain.

Mobile-Friendly test indicates that ndlib.cn isn't optimized for mobile and tablet devices. Designing your websites to be mobile friendly ensures that your pages perform well on all devices, also website page loading time could be improved.

Ndlib.cn General Information

Global Rank

1,385,505

Average Load Time

0.00sec

Links In Count

146

Website Value

$5,840

How popular is ndlib.cn?

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	1394979	270000	2	-24.66%

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1517126	-467711	1	50%	2	100%

Period	Global Rank	Global Rank Delta
past 3 months	1385505	19440

Ndlib.cn Alexa Rank History

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

Ndlib.cn Safety Information

Overview

Last Updated: 04/29/2024

Overall result - "ndlib.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: 02/08/2024

ndlib.cn is safe.

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

Google Safe Search

Last Updated: 02/16/2017

ndlib.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 "ndlib.cn".
"ndlib.cn" is not a phishing page.
"ndlib.cn" does not install unwanted software.
"ndlib.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: 01/30/2021

ndlib.cn is safe.

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

Web of Trust

Last Updated: 04/29/2024

ndlib.cn child safety isunknown.

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

SSL Information

SSL Checker Tool

WARNING!	Certificate download error. Previous scan results are shown below.
WARNING!	Ndlib.cn is not secured by SSL certificate.

Ndlib.cn Server Information

Server Location

Geolocation Tool

Beijing

China

ASN Information

ASN Lookup Tool

ASN ID: 4808
ASN Title: CHINA169-BJ China Unicom Beijing Province Network, CN

Last Update: 03/12/2024

ASN Whois

% [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 'AS4808'

% Abuse contact for 'AS4808' is 'hqs-ipabuse@chinaunicom.cn'

aut-num: AS4808
as-name: CHINA169-BJ
descr: China Unicom Beijing Province Network
country: CN
member-of: AS4837:AS-CNCGROUP
import: from AS4837
action pref=100;
accept ANY
import: from AS9929
action pref=100;
accept AS4814
export: to AS4837
announce AS4808
export: to AS9929
announce AS4808
admin-c: CH1302-AP
tech-c: CH1302-AP
mnt-by: MAINT-CNCGROUP
mnt-irt: IRT-CU-CN
mnt-routes: MAINT-CNCGROUP-RR
last-modified: 2016-05-18T08:44:24Z
source: APNIC

irt: IRT-CU-CN
address: No.21,Financial Street
address: Beijing,100033
address: P.R.China
e-mail: hqs-ipabuse@chinaunicom.cn
abuse-mailbox: hqs-ipabuse@chinaunicom.cn
admin-c: CH1302-AP
tech-c: CH1302-AP
auth: # Filtered
mnt-by: MAINT-CNCGROUP
last-modified: 2017-10-23T05:59:13Z
source: APNIC

person: ChinaUnicom Hostmaster
nic-hdl: CH1302-AP
e-mail: hqs-ipabuse@chinaunicom.cn
address: No.21,Jin-Rong Street
address: Beijing,100033
address: P.R.China
phone: +86-10-66259764
fax-no: +86-10-66259764
country: CN
mnt-by: MAINT-CNCGROUP
last-modified: 2017-08-17T06:13:16Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

Ndlib.cn Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain Whois

Domain Name: ndlib.cn
ROID: 20111010s10001s88191107-cn
Domain Status: ok
Registrant: 国家图书馆
Registrant Contact Email: wenjiexu@nlc.gov.cn
Sponsoring Registrar: 北京中科三方网络技术有限公司
Name Server: bt2.nlc.gov.cn
Name Server: bt1.nlc.gov.cn
Name Server: bt4.nlc.cn
Registration Time: 2011-10-10 15:09:49
Expiration Time: 2026-10-10 15:09:49
DNSSEC: unsigned

DNS Records

DNS Lookup Tool

Host	A Record	TTL
ndlib.cn	202.106.125.43	86400

Host	MX Record	Priority	TTL
ndlib.cn	antispam.nlc.cn	1	86400
ndlib.cn	antispam1.nlc.cn	10	86400
ndlib.cn	mail.nlc.cn	20	86400

Host	NS Record	TTL
ndlib.cn	bt2.nlc.gov.cn	86400

Host	TXT Record	TTL

bt2.nlc.gov.cn
TTL: 86400
Email address: root.bt2.nlc.gov.cn
Serial: 2018011601
Refresh: 10800
Retry: 3600
Expire: 604800
Minimum: 86400

Ndlib.cn HTML Validation

HTML Validation Tool

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

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

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

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

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

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

Attribute “background” not allowed on element “td” at this point.

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

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

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

Attribute “autocompete” not allowed on element “form” at this point.

Attribute “height” not allowed on element “table” at this point.

Attribute “value” not allowed on element “input” at this point.

Element “input” is missing required attribute “alt”.

Table columns in range 5…6 established by element “td” have no cells beginning in them.

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

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

Attribute “height” not allowed on element “tr” at this point.

The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.

The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.

Attribute “background” not allowed on element “table” at this point.

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

Element “area” is missing required attribute “alt”.

Warnings

A table row was 4 columns wide, which is less than the column count established by the first row (6).

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

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Ndlib.cn Desktop Insights

Desktop Page Insights Tool

Last tested: 05/02/2017

Desktop

Desktop Speed

21%

Optimize images

Leverage browser caching

Enable compression

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

Minify HTML

Desktop Resource Breakdown

Total Resources	72
Number of Hosts	2
Static Resources	62
JavaScript Resources	4
CSS Resources	2

Ndlib.cn Mobile Insights

Mobile Page Insights Tool

Last tested: 07/03/2018

Mobile

Mobile Usability

58%

Use legible font sizes

Size content to viewport

Size tap targets appropriately

Configure the viewport

Mobile Speed

35%

Optimize images

Leverage browser caching

Enable compression

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

Minify HTML

Minify CSS

Mobile Resource Breakdown

Total Resources	69
Number of Hosts	2
Static Resources	59
JavaScript Resources	4
CSS Resources	2

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Ndlib.cn 数字图书馆推广工程

Quick Summary

Ndlib.cn General Information

Ndlib.cn Alexa Rank History

Ndlib.cn Safety Information

Ndlib.cn Server Information

Ndlib.cn Domain Name Information

Ndlib.cn HTML Validation

Ndlib.cn Desktop Insights

Ndlib.cn Mobile Insights

Ndlib.cn Nearest Competitors

Ndlib.cn Typos