rezka.bid Rezka.bid

   
HDRezka фильмы и сериалы онлайн в хорошем качестве 720p HD без регистрации

Domain Summary

What is the traffic rank for Rezka.bid?

• Rezka.bid ranks #77,335 globally on HypeStat.

What percent of global Internet users visit Rezka.bid?

0.0006346% of global Internet users visit Rezka.bid

How many people visit Rezka.bid each day?

• Rezka.bid receives approximately 31.3K visitors and 78,339 page impressions per day.

Which countries does Rezka.bid receive most of its visitors from?

• Rezka.bid is mostly visited by people located in Ukraine,Kazakhstan,Israel.

How much Rezka.bid can earn?

• Rezka.bid should earn about $75.28/day from advertising revenue.

What is Rezka.bid estimated value?

• Estimated value of Rezka.bid is $71,768.19.

What IP addresses does Rezka.bid resolve to?

• Rezka.bid resolves to the IP addresses 2606:4700:130:436c:6f75:6466:6c61:7265, 172.67.156.47.

Where are Rezka.bid servers located in?

• Rezka.bid has servers located in United States.

rezka.bid Profile

Title:HDRezka фильмы и сериалы онлайн в хорошем качестве 720p HD без регистрации
Description:Смотреть фильмы онлайн в HD качестве. Сериалы, мультфильмы, аниме, передачи и ТВ шоу на нашем киносайте, без регистрации и смс. Фильмы в высоком качестве на HDrezka
Category:Gambling / Poker

What technologies does rezka.bid use?

These are the technologies used at rezka.bid. rezka.bid has a total of 6 technologies installed in 5 different categories.

rezka.bid Traffic Analysis

Rezka.bid is ranked #77,335 in the world. This website is viewed by an estimated 31.3K visitors daily, generating a total of 78.3K pageviews. This equates to about 0.9M monthly visitors. Rezka.bid traffic has decreased by 15.73% compared to last month.
Daily Visitors31.3K
24.62%
Monthly Visits0.9M
15.73%
Pages per Visit2.50
19.57%
Visit duration01:58
42.77%
Bounce Rate54.53%
2.51%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
31,284
Monthly Visits:
947,905
Pages per Visit:
2.50
Daily Pageviews:
78,339
Avg. visit duration:
01:58
Bounce rate:
54.53%
Global Reach:
0.0006346%
Monthly Visits (SEMrush):
1,835,688
Monthly Unique Visitors (SEMrush):
469,355
Monthly Visits (SimilarWeb):
929,218
HypeRank:
77,335
SEMrush Rank:
6,726,545
SimilarWeb Rank:
77,335
*All traffic values are estimates only.

Traffic sources

Direct:
66.48%
Referral:
0.25%
Search:
33.16%
Social:
0.01%
Paid:
0.10%

Desktop vs Mobile

Desktop:
15.95%
Mobile:
84.05%

Total Visits Last 3 Months

2.1M
JUL
1.1M
AUG
0.9M
SEP

Visitors by country

Country
Users%
 
Ukraine 74.80%
 
Kazakhstan 4.26%
 
Israel 2.83%
 
Belarus 2.11%
 
Poland 2.08%

Which sites are competitors to rezka.bid?

Websites similar to rezka.bid 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 33 days ago
     
This can take up to 60 seconds. Please wait...

*HypeStat.com is not promoting or affiliated with rezka.bid 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:
40,000

 

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:
  rezka.bid
Rank:
(Rank based on keywords, cost and organic traffic)
  6,726,545
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  279
Organic Traffic:
(Number of visitors coming from top 20 search results)
  16
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 $75.3 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $2.3K and annual gross revenue of approximately $27.5K. Based on these figures, the site's net worth is estimated at around $71.8K.

How much would rezka.bid make?

Daily Revenue:
$75.28
Monthly Revenue:
$2,258.40
Yearly Revenue:
$27,477.20
*All earnings values are estimates only.

Daily earning by country

 
CountryPageviewsEarning
 
Ukraine 58,600$26.96
 
Israel 2,220$1.18
 
Kazakhstan 3,334$1.13
 
Belarus 1,654$0.89
 
Poland 1,633$0.65

Loss of money due to Adblock?

Daily Revenue Loss:
$4.07
Monthly Revenue Loss:
$122.00
Yearly Revenue Loss:
$1,484.33
Daily Pageviews Blocked:
8,844
Monthly Pageviews Blocked:
265,320
Yearly Pageviews Blocked:
3,228,054

Daily revenue loss by country

 
CountryBlockedLost Money
 
Ukraine 7,618$3.50
 
Israel 422$0.22
 
Poland 539$0.22
 
Belarus 165$0.09
 
Kazakhstan 100$0.03

How much is rezka.bid worth?

Website Value:
$71.8K

Ad Experience Report

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

Mobile summary

Root domain:
rezka.bid
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:
rezka.bid
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:
rezka.bid
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 rezka.bid hosted?

Rezka.bid may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.

How fast does rezka.bid load?

The average loading time of rezka.bid is 508 ms. The Desktop speed index is 99 and mobile speed index is 83.
Average Load Time:
508 ms

Page Speed (Google PageSpeed Insights) - Desktop

99
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a FAST 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 98% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 98% 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)581ms 90% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 90% 8% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 8% 1% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 1%
First Contentful Paint (FCP)861ms 95% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 95% 2% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 2% 1% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 1%
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)35ms 97% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 97% 1% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 1% 1% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 1%
Largest Contentful Paint (LCP)1.0s 96% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 96% 2% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 2% 1% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 1%

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)1ms 96% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 96% 2% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 2% 1% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 1%
Time To First Byte (TTFB)574ms 87% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 87% 10% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 10% 2% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 2%
First Contentful Paint (FCP)906ms 93% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 93% 3% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 3% 2% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 2%
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)51ms 94% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 94% 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)1.1s 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
Speed Index 1.0 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Time to Interactive 1.1 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
Max Potential First Input Delay 50 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  
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Largest Contentful Paint 0.9 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 0.3 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
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

83
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a FAST 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)7ms 98% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 84% 14% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 14% 1% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 1%
Time To First Byte (TTFB)639ms 90% of loads for this page have a fast (<800s) Time To First Byte (TTFB) 85% 11% of loads for this page have an average (800s ~ 1800s) Time To First Byte (TTFB) 11% 3% of loads for this page have a slow (>1800s) Time To First Byte (TTFB) 3%
First Contentful Paint (FCP)1.0s 95% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 92% 4% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 4% 2% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 2%
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)116ms 97% of loads for this page have a fast (<200s) Interactive To Next Paint (INP) 89% 6% of loads for this page have an average (200s ~ 500s) Interactive To Next Paint (INP) 6% 4% of loads for this page have a slow (>500s) Interactive To Next Paint (INP) 4%
Largest Contentful Paint (LCP)1.2s 96% of loads for this page have a fast (<2500s) Largest Contentful Paint (LCP) 93% 3% of loads for this page have an average (2500s ~ 4000s) Largest Contentful Paint (LCP) 3% 2% of loads for this page have a slow (>4000s) Largest Contentful Paint (LCP) 2%

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)9ms 77% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 77% 13% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 13% 9% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 9%
Time To First Byte (TTFB)588ms 86% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 86% 10% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 10% 2% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 2%
First Contentful Paint (FCP)1.0s 92% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 92% 5% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 5% 2% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 2%
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)175ms 78% of loads for this page have a fast (<0.2s) Interactive To Next Paint (INP) 78% 15% of loads for this page have an average (0.2s ~ 0.5s) Interactive To Next Paint (INP) 15% 5% of loads for this page have a slow (>0.5s) Interactive To Next Paint (INP) 5%
Largest Contentful Paint (LCP)1.2s 92% of loads for this page have a fast (<2.5s)Largest Contentful Paint (LCP) 92% 4% of loads for this page have an average (2.5s ~ 4s)Largest Contentful Paint (LCP) 4% 2% of loads for this page have a slow (>4s)Largest Contentful Paint (LCP) 2%

Lab Data

Largest Contentful Paint 3.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Max Potential First Input Delay 230 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
Total Blocking Time 260 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
Speed Index 3.6 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
First Meaningful Paint  
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
First Contentful Paint 0.9 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
Time to Interactive 5.9 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
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 rezka.bid 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 rezka.bid are reduced by 78%.
rezka.bid use br compression.
Original size: 50.81 KB
Compressed size: 10.79 KB
File reduced by: 40.02 KB (78%)

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. rezka.bid has 80 Safety Reputations.
Status:
  SAFE
Safety Reputations:
  80
Safety Confidence:
  51
Child Safety Reputations:
  10
Child Safety Confidence:
  51

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. rezka.bid supports HTTPS.
 rezka.bid supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: rezka.bid
Organization:
Location:
Issuer: WE1
Valid from: Aug 16 12:07:22 2024 GMT
Valid until: Nov 14 12:07:21 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.
 rezka.bid 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: Tue, 08 Oct 2024 09:36:33 GMT
content-type: text/html; charset=utf-8
x-powered-by: PHP/8.1.17
set-cookie: PHPSESSID=2a1a015de8e24f9ae9921037c2479694; path=/; secure; HttpOnly
expires: Thu, 19 Nov 1981 08:52:00 GMT
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
cf-cache-status: DYNAMIC
report-to: {"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=brtBd1jK1tTTJPwzL%2FaY9hvTkgZRpufo3HVTCk%2FRdJ%2FgcB3wucoLpshr%2FOwix5S62iLuNaoVZRD8d1HbmRPLeDW4Y9%2B4Ud%2B22PjxgT55Yiz%2Fs1bq2mT0bl8k5do%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
speculation-rules: "/cdn-cgi/speculation"
server: cloudflare
cf-ray: 8cf525ae3d7a110e-ORD
content-encoding: br

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
AAAA 2606:4700:130:436c:6f75:6466:6c61:7265 203
A 104.21.48.205 221
A 172.67.156.47 221
NS alexa.ns.cloudflare.com 3521
NS lamar.ns.cloudflare.com 3521
HINFO 3600

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 March 4, 2023 and will expire on March 4, 2025 if not renewed. This website is now assigned through the registrar NAMECHEAP INC. The WHOIS data for this website's domain was last updated on February 3, 2024.
Domain Created:
2023-03-04
Domain Expires:
2025-03-04
Domain Updated:
2024-02-03
Domain Age:
1 years 8 months 6 days
Domain Registrar:
NAMECHEAP INC
Domain Owner:
Privacy service provided by Withheld for Privacy e
WhoIs:
 

Domain name: rezka.bid
Registry Domain ID: D82DC9808EB9B4CC0AA5219CE00B31F5D-GDREG
Registrar WHOIS Server: whois.namecheap.com
Registrar URL: http://www.namecheap.com
Updated Date: 2024-02-03T08:01:50.19Z
Creation Date: 2023-03-04T09:40:28.62Z
Registrar Registration Expiration Date: 2025-03-04T09:40:28.62Z
Registrar: NAMECHEAP INC
Registrar IANA ID: 1068
Registrar Abuse Contact Email: email
Registrar Abuse Contact Phone: +1.9854014545
Reseller: NAMECHEAP INC
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: 
Registrant Name: Redacted for Privacy
Registrant Organization: Privacy service provided by Withheld for Privacy ehf
Registrant Street: Kalkofnsvegur 2 
Registrant City: Reykjavik
Registrant State/Province: Capital Region
Registrant Postal Code: 101
Registrant Country: IS
Registrant Phone: +354.4212434
Registrant Phone Ext: 
Registrant Fax: 
Registrant Fax Ext: 
Registrant Email: email
Registry Admin ID: 
Admin Name: Redacted for Privacy
Admin Organization: Privacy service provided by Withheld for Privacy ehf
Admin Street: Kalkofnsvegur 2 
Admin City: Reykjavik
Admin State/Province: Capital Region
Admin Postal Code: 101
Admin Country: IS
Admin Phone: +354.4212434
Admin Phone Ext: 
Admin Fax: 
Admin Fax Ext: 
Admin Email: email
Registry Tech ID: 
Tech Name: Redacted for Privacy
Tech Organization: Privacy service provided by Withheld for Privacy ehf
Tech Street: Kalkofnsvegur 2 
Tech City: Reykjavik
Tech State/Province: Capital Region
Tech Postal Code: 101
Tech Country: IS
Tech Phone: +354.4212434
Tech Phone Ext: 
Tech Fax: 
Tech Fax Ext: 
Tech Email: email
Name Server: alexa.ns.cloudflare.com
Name Server: lamar.ns.cloudflare.com
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2024-10-08T02:37:51.47Z