3dpchip.com 3dpchip.com

   

Domain Summary

What is the traffic rank for 3dpchip.com?

• 3dpchip.com ranks #389,341 globally on HypeStat.

What percent of global Internet users visit 3dpchip.com?

0.0002538% of global Internet users visit 3dpchip.com

How many people visit 3dpchip.com each day?

• 3dpchip.com receives approximately 12.5K visitors and 66,103 page impressions per day.

Which countries does 3dpchip.com receive most of its visitors from?

• 3dpchip.com is mostly visited by people located in Korea, Republic of,Brazil,Viet Nam.

How much 3dpchip.com can earn?

• 3dpchip.com should earn about $167.26/day from advertising revenue.

What is 3dpchip.com estimated value?

• Estimated value of 3dpchip.com is $185,456.95.

What IP addresses does 3dpchip.com resolve to?

• 3dpchip.com resolves to the IP addresses 66.70.181.7.

Where are 3dpchip.com servers located in?

• 3dpchip.com has servers located in Seocho, 11, Canada.

3dpchip.com Profile

About: 3DPChip.com is a website primarily focused on providing software tools designed to help users manage their computer hardware drivers. One of their flagship tools, 3DP Chip, is widely used to detect and display various hardware components in a PC, such as the CPU, motherboard, graphics card, and sound card. Following detection, the software can guide users to the appropriate websites where they can download the latest driver updates for these components, streamlining the process of keeping a system's drivers current and functional. Additionally, the website offers another tool called 3DP Net, which enables users to automatically detect and install network drivers. This can be particularly useful when setting up a new system or troubleshooting network connectivity issues. Overall, 3DPChip.com is geared towards users who require a straightforward, reliable solution for monitoring and updating their system drivers, thereby ensuring optimal hardware performance and system stability.
*This text is generated by artificial intelligence and may not be accurate. Edit Site Info

What technologies does 3dpchip.com use?

These are the technologies used at 3dpchip.com. 3dpchip.com has a total of 1 technologies installed in 2 different categories.

3dpchip.com Traffic Analysis

3dpchip.com is ranked #389,341 in the world. This website is viewed by an estimated 12.5K visitors daily, generating a total of 66.1K pageviews. This equates to about 379.1K monthly visitors. 3dpchip.com traffic has increased by 6.53% compared to last month.
Daily Visitors12.5K
13.21%
Monthly Visits379.1K
6.53%
Pages per Visit5.28
16.6%
Visit duration03:58
4.78%
Bounce Rate31.55%
28.11%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
12,512
Monthly Visits:
379,114
Pages per Visit:
5.28
Daily Pageviews:
66,103
Avg. visit duration:
03:58
Bounce rate:
31.55%
Global Reach:
0.0002538%
Monthly Visits (SEMrush):
495,819
Monthly Unique Visitors (SEMrush):
397,726
Monthly Visits (SimilarWeb):
371,642
HypeRank:
389,341
SEMrush Rank:
422,948
SimilarWeb Rank:
110,524
*All traffic values are estimates only.

Traffic sources

Direct:
52.29%
Referral:
12.74%
Search:
30.30%
Social:
4.67%
Paid:
0%

Desktop vs Mobile

Desktop:
67.74%
Mobile:
32.26%

Total Visits Last 3 Months

434.3K
FEB
355.9K
MAR
379.1K
APR

Visitors by country

Country
Users%
 
Korea, Republic of 24.81%
 
Brazil 8.28%
 
Viet Nam 4.27%
 
Indonesia 4.20%
 
Colombia 4.06%

Which sites are competitors to 3dpchip.com?

Websites similar to 3dpchip.com are sites similar on user interests and browsing behavior. Users can discover new websites that are similar to the ones they already enjoy or find useful.
Last update was 373 days ago
     
This can take up to 60 seconds. Please wait...

*HypeStat.com is not promoting or affiliated with 3dpchip.com in any way. Only publicly available statistics data are displayed.

Search Engine Indexes

Search engine indexes are huge databases or collections of net pages that search engines like google like google and yahoo use to retrieve applicable facts while customers carry out searches. These indexes are created through search engines like google and yahoo through crawling and indexing net pages from throughout the internet.
Google Index:
8,230

 

SEMrush is a complete on line advertising and marketing platform that gives a extensive variety of gear and functions to help companies and entrepreneurs in enhancing their on line visibility and optimizing their virtual advertising and marketing strategies.
SemRushSemRush
Domain:
  3dpchip.com
Rank:
(Rank based on keywords, cost and organic traffic)
  422,948
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  672
Organic Traffic:
(Number of visitors coming from top 20 search results)
  3,169
Organic Cost:
((How much need to spend if get same number of visitors from Google Adwords)
  $2,148.00

Revenue report

Google.com would generate approximately $167.3 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $5K and annual gross revenue of approximately $61K. Based on these figures, the site's net worth is estimated at around $185.5K.

How much would 3dpchip.com make?

Daily Revenue:
$167.26
Monthly Revenue:
$5,017.80
Yearly Revenue:
$61,049.90
*All earnings values are estimates only.

Daily earning by country

 
CountryPageviewsEarning
 
Korea, Republic of 16,400$9.84
 
Brazil 5,470$7.28
 
Colombia 2,686$1.85
 
Viet Nam 2,824$1.33
 
Indonesia 2,777$0.31

Loss of money due to Adblock?

Daily Revenue Loss:
$1.21
Monthly Revenue Loss:
$36.26
Yearly Revenue Loss:
$441.17
Daily Pageviews Blocked:
2,923
Monthly Pageviews Blocked:
87,682
Yearly Pageviews Blocked:
1,066,799

Daily revenue loss by country

 
CountryBlockedLost Money
 
Brazil 328$0.44
 
Korea, Republic of 656$0.39
 
Indonesia 1,611$0.18
 
Colombia 215$0.15
 
Viet Nam 113$0.05

How much is 3dpchip.com worth?

Website Value:
$185.5K

Ad Experience Report

Summary of the ad experience rating of a website for a specific platform.

Mobile summary

Root domain:
3dpchip.com
Last Change Time:
(The last time that the site changed status.)
2021-06-14 10:10:02
Ad filtering:
(Chrome is not filtering ads on your site.)
Off
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Passing

Desktop summary

Root domain:
3dpchip.com
Last Change Time:
(The last time that the site changed status.)
2021-06-14 10:10:02
Ad filtering:
(Chrome is not filtering ads on your site.)
Off
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Passing

Abusive Experience Report

Summary of the abusive experience rating of a website.
Root domain:
3dpchip.com
Last Change Time:
(The last time that the site changed status.)
2021-06-14 10:10:02
Enforcement:
(Chrome is not preventing your site from opening new windows or tabs.)
Off
Status:
(The status of the site reviewed for the abusive experiences.)
Passing

Where is 3dpchip.com hosted?

3dpchip.com may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.
Server IP:
66.70.181.7
ASN:
AS16276 
ISP:
OVH SAS 
Server Location:
Seocho
11
Canada, CA
 

Other sites hosted on 66.70.181.7

There are no other sites hosted on this IP

How fast does 3dpchip.com load?

The average loading time of 3dpchip.com is 99 ms. The Desktop speed index is 98 and mobile speed index is 86.
Average Load Time:
99 ms

Page Speed (Google PageSpeed Insights) - Desktop

98
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a AVERAGE speed compared to other pages in the Chrome User Experience Report.We are showing the 90th percentile of FCP and the 95th percentile of FID.

Cumulative Layout Shift (CLS)8ms 86% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 86% 13% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 13% 0% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)1.1s 67% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 67% 19% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 19% 12% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 12%
First Contentful Paint (FCP)1.5s 79% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 79% 9% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 9% 11% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 11%
First Input Delay (FID)3ms 97% of loads for this page have a fast (<100ms) First Input Delay (FID) 97% 1% of loads for this page have an average (100ms ~ 300ms) First Input Delay (FID) 1% 0% of loads for this page have a slow (>300ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)40ms 95% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 95% 2% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 2% 2% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 2%
Largest Contentful Paint (LCP)1.8s 83% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 83% 6% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 6% 10% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 10%

Origin Data

All pages served from this origin have an FAST speed compared to other pages in the Chrome User Experience Report. over the last 30 days.To view suggestions tailored to each page, analyze individual page URLs.

Cumulative Layout Shift (CLS)5ms 85% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 85% 11% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 11% 3% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 3%
Time To First Byte (TTFB)625ms 84% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 84% 11% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 11% 4% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 4%
First Contentful Paint (FCP)828ms 91% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 91% 4% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 4% 4% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 4%
First Input Delay (FID)2ms 97% of loads for this page have a fast (<100ms) First Input Delay (FID) 97% 1% of loads for this page have an average 100ms ~ 300ms) First Input Delay (FID) 1% 1% of loads for this page have a slow (>300ms) First Input Delay (FID) 1%
Interaction To Next Paint (INP)140ms 82% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 82% 10% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 10% 7% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 7%
Largest Contentful Paint (LCP)860ms 94% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 94% 2% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 2% 2% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 2%

Lab Data

Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`  
A `<meta name="viewport">` not only optimizes your app for mobile screen sizes, but also prevents . a 300 millisecond delay to user input Learn more about using the viewport meta tag
First Contentful Paint 0.3 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
Largest Contentful Paint 1.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Speed Index 0.8 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Time to Interactive 0.4 s
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric
First Meaningful Paint 0.3 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Lazy load third-party resources with facades  
Some third-party embeds can be lazy loaded. Consider replacing them with a facade until they are required. Learn how to defer third-parties with a facade

Page Speed (Google PageSpeed Insights) - Mobile

86
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a AVERAGE speed compared to other pages in the Chrome User Experience Report.We are showing the 90th percentile of FCP and the 95th percentile of FID.

Cumulative Layout Shift (CLS)2ms 86% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 100% 0% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)349ms 67% of loads for this page have a fast (<800s) Time To First Byte (TTFB) 95% 3% of loads for this page have an average (800s ~ 1800s) Time To First Byte (TTFB) 3% 0% of loads for this page have a slow (>1800s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)694ms 79% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 97% 1% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 1% 0% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 0%
First Input Delay (FID)254ms 8% of loads for this page have a fast (<100ms) First Input Delay (FID) 8% 85% of loads for this page have an average (100ms ~ 300ms) First Input Delay (FID) 85% 5% of loads for this page have a slow (>300ms) First Input Delay (FID) 5%
Interactive To Next Paint (INP)279ms 95% of loads for this page have a fast (<200s) Interactive To Next Paint (INP) 58% 40% of loads for this page have an average (200s ~ 500s) Interactive To Next Paint (INP) 40% 0% of loads for this page have a slow (>500s) Interactive To Next Paint (INP) 0%
Largest Contentful Paint (LCP)913ms 83% of loads for this page have a fast (<2500s) Largest Contentful Paint (LCP) 97% 2% of loads for this page have an average (2500s ~ 4000s) Largest Contentful Paint (LCP) 2% 0% of loads for this page have a slow (>4000s) Largest Contentful Paint (LCP) 0%

Origin Data

All pages served from this origin have an SLOW speed compared to other pages in the Chrome User Experience Report. over the last 30 days.To view suggestions tailored to each page, analyze individual page URLs.

Cumulative Layout Shift (CLS)1ms 97% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 97% 1% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 1% 0% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)712ms 79% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 79% 14% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 14% 5% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 5%
First Contentful Paint (FCP)1.4s 83% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 83% 10% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 10% 6% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 6%
First Input Delay (FID)48ms 97% of loads for this page have a fast (<100ms) First Input Delay (FID) 76% 21% of loads for this page have an average 100ms ~ 300ms) First Input Delay (FID) 21% 1% of loads for this page have a slow (>300ms) First Input Delay (FID) 1%
Interactive To Next Paint (INP)638ms 9% of loads for this page have a fast (<0.2s) Interactive To Next Paint (INP) 9% 50% of loads for this page have an average (0.2s ~ 0.5s) Interactive To Next Paint (INP) 50% 39% of loads for this page have a slow (>0.5s) Interactive To Next Paint (INP) 39%
Largest Contentful Paint (LCP)1.5s 90% of loads for this page have a fast (<2.5s)Largest Contentful Paint (LCP) 90% 5% of loads for this page have an average (2.5s ~ 4s)Largest Contentful Paint (LCP) 5% 3% of loads for this page have a slow (>4s)Largest Contentful Paint (LCP) 3%

Lab Data

Lazy load third-party resources with facades  
Some third-party embeds can be lazy loaded. Consider replacing them with a facade until they are required. Learn how to defer third-parties with a facade
First Contentful Paint 1.2 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
First Meaningful Paint 1.2 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Largest Contentful Paint 4.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Speed Index 1.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Time to Interactive 4.2 s
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric
Total Blocking Time 80 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`  
A `<meta name="viewport">` not only optimizes your app for mobile screen sizes, but also prevents . a 300 millisecond delay to user input Learn more about using the viewport meta tag

Does 3dpchip.com use compression?

Website compression is the process of reducing the size of website files, such as HTML, CSS, JavaScript, and image files, to improve website performance and load times. Compressing website files can significantly reduce the amount of data that needs to be transferred from the server to the user's browser, resulting in faster page load times and improved user experience. Files on 3dpchip.com are reduced by 31%.
3dpchip.com use gzip compression.
Original size: 309 B
Compressed size: 212 B
File reduced by: 97 B (31%)

Google Safe Browsing

Google Safe Browsing is a service provided by Google that helps protect users from visiting websites that may contain malicious or harmful content, such as malware, phishing attempts, or deceptive software.
This site is not currently listed as suspicious

MyWot.com Reputation Ratings

MyWOT (short for "My Web of Trust") is a web-based reputation and rating service that provides users with information about the trustworthiness and safety of websites. 3dpchip.com has 72 Safety Reputations.
Status:
  SAFE
Safety Reputations:
  72
Safety Confidence:
  9

SSL Checker - SSL Certificate Verify

An SSL (Secure Sockets Layer) certificate is a digital certificate that establishes a secure encrypted connection between a web server and a user's web browser. It provides authentication and encryption, ensuring that data transmitted between the server and the browser remains private and protected. 3dpchip.com supports HTTPS.
 3dpchip.com supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: *.3dpchip.com
Organization:
Location:
Issuer: R3
Valid from: Apr 27 11:04:56 2024 GMT
Valid until: Jul 26 11:04:55 2024 GMT
Authority: CA:FALSE
Keysize:
Common Name: R3
Organization: Let's Encrypt
Location: US
Issuer: ISRG Root X1
Valid from: Sep 4 00:00:00 2020 GMT
Valid until: Sep 15 16:00:00 2025 GMT
Authority: CA:TRUE
Keysize: 2048 Bits

Verify HTTP/2 Support

HTTP/2 (Hypertext Transfer Protocol version 2) is a major revision of the HTTP protocol, which is the foundation of data communication on the World Wide Web. It was developed as an improvement over the previous HTTP/1.1 version to enhance web performance and efficiency.
 3dpchip.com does not support HTTP/2
     
Verifying HTTP/2.0 Support. Please wait...

Http Header

HTTP headers are extra portions of records despatched among a consumer (which include an internet browser) and a server at some stage in an HTTP request or response. They offer instructions, metadata, or manipulate parameters for the conversation among the consumer and server.
Server: nginx
Date: Wed, 05 Jun 2024 06:15:23 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Content-Encoding: gzip

DNS Lookup

DNS entries (Domain Name System) are a critical component of the Internet infrastructure. They act as directories that translate human-readable domain names (such as example.com) to machine-readable IP addresses. DNS records are stored on DNS servers and help forward internet traffic efficiently.
Type Ip Target/Txt TTL
HINFO 3600
SOA 1743
Mname peyton.ns.cloudflare.com
Rname dns.cloudflare.com
Serial Number 2342213947
Refresh 10000
Retry 2400
Expire 604800
Minimum TTL 1800
A 66.70.181.7 243
NS peyton.ns.cloudflare.com 172743
NS tegan.ns.cloudflare.com 172743

Whois Lookup

Domain WHOIS is a public database that provides information about domain names, including registered owners, contact information, domain registrars, registration and expiration dates, name servers, and other relevant information. Domain registration for this website began on May 4, 2009 and will expire on May 4, 2025 if not renewed. This website is now assigned through the registrar Megazone Corp., dba HOSTING.KR. The WHOIS data for this website's domain was last updated on April 27, 2024.
Domain Created:
2009-05-04
Domain Expires:
2025-05-04
Domain Updated:
2024-04-27
Domain Age:
16 years 1 months 9 days
Domain Registrar:
Megazone Corp., dba HOSTING.KR
Domain Owner:
3DP
WhoIs:
 

Domain Name: 3dpchip.com
Registry Domain ID: 1554388537_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.hosting.kr
Registrar URL: http://www.hosting.kr
Updated Date: 2024-04-27T12:00:00Z
Creation Date: 2009-05-04T12:00:00Z
Registrar Registration Expiration Date: 2025-05-04T12:00:00Z
Registrar: Megazone Corp., dba HOSTING.KR
Registrar IANA ID: 1489
Registrar Abuse Contact Email: email
Registrar Abuse Contact Phone: +82.16447378
Reseller:
Domain Status: clientUpdateProhibited https://www.icann.org/resources/pages/epp-status-codes-2014-06-16-en#clientUpdateProhibited
Registry Registrant ID: Not Available From Registry
Registrant Name: 3DP
Registrant Organization: 3DP
Registrant Street: 102-2703 2326 Gimhae-daero Gimhae-si
Registrant City: Gyeongsangnam-do
Registrant State/Province:
Registrant Postal Code: 50940
Registrant Country: KR
Registrant Phone: +82.551111111
Registrant Phone Ext:
Registrant Fax: +82.551111111
Registrant Fax Ext:
Registrant Email: email
Registry Admin ID: Not Available From Registry
Admin Name: 3DP
Admin Organization: 3DP
Admin Street: 102-2703 2326 Gimhae-daero Gimhae-si
Admin City: Gyeongsangnam-do
Admin State/Province:
Admin Postal Code: 50940
Admin Country: KR
Admin Phone: +82.551111111
Admin Phone Ext:
Admin Fax: +82.551111111
Admin Fax Ext:
Admin Email: email
Registry Tech ID: Not Available From Registry
Tech Name: 3DP
Tech Organization: 3DP
Tech Street: 102-2703 2326 Gimhae-daero Gimhae-si
Tech City: Gyeongsangnam-do
Tech State/Province:
Tech Postal Code: 50940
Tech Country: KR
Tech Phone: +82.551111111
Tech Phone Ext:
Tech Fax: +82.551111111
Tech Fax Ext:
Tech Email: email
Name Server: peyton.ns.cloudflare.com
Name Server: tegan.ns.cloudflare.com
Name Server: 
Name Server: 
Name Server: 
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2024-04-27T12:00:00Z