ottcst.com Ottcst.com

   

Domain Summary

What is the traffic rank for Ottcst.com?

• Ottcst.com ranks #5,130,192 globally on HypeStat.

What percent of global Internet users visit Ottcst.com?

1.02E-5% of global Internet users visit Ottcst.com

How many people visit Ottcst.com each day?

• Ottcst.com receives approximately 504 visitors and 640 page impressions per day.

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

• Ottcst.com is mostly visited by people located in Morocco,Netherlands,Spain.

How much Ottcst.com can earn?

• Ottcst.com should earn about $0.82/day from advertising revenue.

What is Ottcst.com estimated value?

• Estimated value of Ottcst.com is $756.00.

What IP addresses does Ottcst.com resolve to?

• Ottcst.com resolves to the IP addresses 2606:4700:3038::6815:e9cc, 104.21.233.203.

ottcst.com Profile

About: It appears you're asking about the website ottcst.com. Based on the name, it could potentially be related to OTT (Over-The-Top) services, which are platforms that provide streaming media directly to viewers over the internet. These services bypass traditional distribution channels like cable or satellite television. However, without visiting the site or having more context, it's difficult to provide specific details. If you need more tailored information regarding content, services, or other aspects of the site, you might consider visiting it directly or providing more context about its offerings or purpose.
*This text is generated by artificial intelligence and may not be accurate. Edit Site Info

ottcst.com Traffic Analysis

Ottcst.com is ranked #5,130,192 in the world. This website is viewed by an estimated 504 visitors daily, generating a total of 640 pageviews. This equates to about 15.3K monthly visitors. Ottcst.com traffic has decreased by 49.06% compared to last month.
Daily Visitors504
51%
Monthly Visits15.3K
49.06%
Pages per Visit1.27
40.99%
Visit duration03:09
59.96%
Bounce Rate76.78%
9.78%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
504
Monthly Visits:
15,271
Pages per Visit:
1.27
Daily Pageviews:
640
Avg. visit duration:
03:09
Bounce rate:
76.78%
Global Reach:
1.02E-5%
Monthly Visits (SEMrush):
14,977
Monthly Unique Visitors (SEMrush):
12,738
HypeRank:
5,130,192
*All traffic values are estimates only.

Traffic sources

Direct:
99.47%
Referral:
0.53%
Search:
0%
Social:
0%
Paid:
0%

Desktop vs Mobile

Desktop:
21.27%
Mobile:
78.73%

Visitors by country

Country
Users%
 
Morocco 41.48%
 
Netherlands 19.13%
 
Spain 14.01%
 
Zambia 7.49%
 
Israel 4.76%
Last update was 337 days ago
     
This can take up to 60 seconds. Please wait...

*HypeStat.com is not promoting or affiliated with ottcst.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.
Bing Index:
2

 

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:
  ottcst.com
Rank:
(Rank based on keywords, cost and organic traffic)
  n/a
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  0
Organic Traffic:
(Number of visitors coming from top 20 search results)
  0
Organic Cost:
((How much need to spend if get same number of visitors from Google Adwords)
  $0.00

Revenue report

Google.com would generate approximately $0.8 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $24.6 and annual gross revenue of approximately $299.3. Based on these figures, the site's net worth is estimated at around $756.

How much would ottcst.com make?

Daily Revenue:
$0.82
Monthly Revenue:
$24.60
Yearly Revenue:
$299.30
*All earnings values are estimates only.

Daily earning by country

 
CountryPageviewsEarning
 
Netherlands 122$0.23
 
Morocco 265$0.16
 
Spain 90$0.04
 
Zambia 48$0.03
 
Israel 30$0.02

Loss of money due to Adblock?

Daily Revenue Loss:
$0.05
Monthly Revenue Loss:
$1.64
Yearly Revenue Loss:
$19.97
Daily Pageviews Blocked:
50
Monthly Pageviews Blocked:
1,497
Yearly Pageviews Blocked:
18,213

Daily revenue loss by country

 
CountryBlockedLost Money
 
Netherlands 21$0.04
 
Spain 17$0.01
 
Morocco 5$0.00
 
Israel 6$0.00
 
Zambia 1$0.00

How much is ottcst.com worth?

Website Value:
$756

Ad Experience Report

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

Mobile summary

Root domain:
ottcst.com
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.)
Not reviewed

Desktop summary

Root domain:
ottcst.com
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.)
Not reviewed

Abusive Experience Report

Summary of the abusive experience rating of a website.
Root domain:
ottcst.com
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.)
Not reviewed

Where is ottcst.com hosted?

Ottcst.com may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.
Server IP:
2606:4700:3038::6815:e9cc, 104.21.233.203
ASN:
AS13335 
ISP:
Cloudflare Inc 
Server Location:


 

Other sites hosted on 104.21.233.203

How fast does ottcst.com load?

The average loading time of ottcst.com is 340 ms. The Desktop speed index is 100 and mobile speed index is 100.
Average Load Time:
340 ms

Page Speed (Google PageSpeed Insights) - Desktop

100
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a 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)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average (0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0ms) Largest Contentful Paint (LCP) 0%

Origin Data

All pages served from this origin have an 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)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average 0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0ms) Largest Contentful Paint (LCP) 0%

Lab Data

Speed Index 0.3 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Minimize third-party usage  
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn how to minimize third-party impact
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
Largest Contentful Paint image was not lazily loaded  
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint. Learn more about optimal lazy loading
Time to Interactive 0.2 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
Largest Contentful Paint 0.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
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 Meaningful Paint 0.2 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Preload Largest Contentful Paint image  
If the LCP element is dynamically added to the page, you should preload the image in order to improve LCP. Learn more about preloading LCP elements
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
Max Potential First Input Delay 20 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric
First Contentful Paint 0.2 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric

Page Speed (Google PageSpeed Insights) - Mobile

100
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a 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)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average (0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interactive To Next Paint (INP)0 0% of loads for this page have a fast (<0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have an average (0s ~ 0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have a slow (>0s) Interactive To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0s) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0s ~ 0s) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0s) Largest Contentful Paint (LCP) 0%

Origin Data

All pages served from this origin have an 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)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average 0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interactive To Next Paint (INP)0 0% of loads for this page have a fast (<0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have an average (0s ~ 0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have a slow (>0s) Interactive To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0s)Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0s ~ 0s)Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0s)Largest Contentful Paint (LCP) 0%

Lab Data

Max Potential First Input Delay 20 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric
First Meaningful Paint 0.8 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 image was not lazily loaded  
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint. Learn more about optimal lazy loading
Minimize third-party usage  
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn how to minimize third-party impact
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
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
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
Preload Largest Contentful Paint image  
If the LCP element is dynamically added to the page, you should preload the image in order to improve LCP. Learn more about preloading LCP elements
Largest Contentful Paint 0.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
First Contentful Paint 0.8 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
Speed Index 0.9 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Time to Interactive 0.8 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

Does ottcst.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 ottcst.com are reduced by %.
ottcst.com does not use compression.
Original size: 14 B
Compressed size: n/a
File reduced by: (%)

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.
Status:
  SAFE

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. ottcst.com supports HTTPS.
 ottcst.com supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: ottcst.com
Organization:
Location:
Issuer: WE1
Valid from: Jul 10 02:30:10 2024 GMT
Valid until: Oct 8 02:30:09 2024 GMT
Authority: CA:FALSE
Keysize:
Common Name: WE1
Organization: Google Trust Services
Location: US
Issuer: GTS Root R4
Valid from: Dec 13 09:00:00 2023 GMT
Valid until: Feb 20 14:00:00 2029 GMT
Authority: CA:TRUE
Keysize:
Common Name: GTS Root R4
Organization: Google Trust Services LLC
Location: US
Issuer: GlobalSign Root CA
Valid from: Nov 15 03:43:21 2023 GMT
Valid until: Jan 28 00:00:42 2028 GMT
Authority: CA:TRUE
Keysize:

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.
 ottcst.com supports 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.
date: Sun, 14 Jul 2024 18:53:02 GMT
content-type: text/html
cf-cache-status: DYNAMIC
report-to: {"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=5EwCSEODPa1UW7AFXhz6E2hLkcHQKEgp4%2B6IkQIrgohp3BGrqseo0lNgQBHmGgzEskQbeZrf7d9lPNnL24xG9WPtOR7lkh3b%2BgSA7Vj2e7KJyRdxcxbxY1teTMOe"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 8a33b6967a219127-ORD
alt-svc: h3=":443"; ma=86400

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
AAAA 2606:4700:3038::6815:e9cb 266
AAAA 2606:4700:3038::6815:e9cc 266
A 104.21.233.204 266
A 104.21.233.203 266
NS ian.ns.cloudflare.com 172766
NS dolly.ns.cloudflare.com 172766

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 September 8, 2022 and will expire on September 8, 2024 if not renewed. This website is now assigned through the registrar Name.com, Inc.. The WHOIS data for this website's domain was last updated on August 15, 2023.
Domain Created:
2022-09-08
Domain Expires:
2024-09-08
Domain Updated:
2023-08-15
Domain Age:
2 years 9 months 9 days
Domain Registrar:
Name.com, Inc.
Domain Owner:
Domain Protection Services, Inc.
WhoIs:
 

Domain Name: OTTCST.COM 
Registry Domain ID: 2724086747_DOMAIN_COM-VRSN 
Registrar WHOIS Server: whois.name.com 
Registrar URL: http://www.name.com 
Updated Date: 2023-08-15T14:47:57Z 
Creation Date: 2022-09-08T18:38:07Z 
Registrar Registration Expiration Date: 2024-09-08T18:38:07Z 
Registrar: Name.com, Inc. 
Registrar IANA ID: 625 
Reseller:  
Domain Status: clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited 
Registry Registrant ID: Not Available From Registry 
Registrant Name: Redacted For Privacy 
Registrant Organization: Domain Protection Services, Inc. 
Registrant Street: PO Box 1769  
Registrant City: Denver 
Registrant State/Province: CO 
Registrant Postal Code: 80201 
Registrant Country: US 
Registrant Phone: +1.7208009072 
Registrant Fax: +1.7209758725 
Registrant Email: https://www.name.com/contact-domain-whois/ottcst.com 
Registry Admin ID: Not Available From Registry 
Admin Name: Redacted For Privacy 
Admin Organization: Domain Protection Services, Inc. 
Admin Street: PO Box 1769  
Admin City: Denver 
Admin State/Province: CO 
Admin Postal Code: 80201 
Admin Country: US 
Admin Phone: +1.7208009072 
Admin Fax: +1.7209758725 
Admin Email: https://www.name.com/contact-domain-whois/ottcst.com 
Registry Tech ID: Not Available From Registry 
Tech Name: Redacted For Privacy 
Tech Organization: Domain Protection Services, Inc. 
Tech Street: PO Box 1769  
Tech City: Denver 
Tech State/Province: CO 
Tech Postal Code: 80201 
Tech Country: US 
Tech Phone: +1.7208009072 
Tech Fax: +1.7209758725 
Tech Email: https://www.name.com/contact-domain-whois/ottcst.com 
Name Server: ian.ns.cloudflare.com 
Name Server: dolly.ns.cloudflare.com 
DNSSEC: unSigned 
Registrar Abuse Contact Email: email 
Registrar Abuse Contact Phone: +1.7203101849 
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2024-07-14T18:53:33Z