schoolerpindia.net Schoolerpindia.net

   
SCHOOL ERP INDIA MOBILE APP

Domain Summary

What is the traffic rank for Schoolerpindia.net?

• Schoolerpindia.net ranks #6,591,441 globally on HypeStat.

What percent of global Internet users visit Schoolerpindia.net?

• 1.6E-6% of global Internet users visit Schoolerpindia.net

How many people visit Schoolerpindia.net each day?

• Schoolerpindia.net receives approximately 80 visitors and 80 page impressions per day.

How much Schoolerpindia.net can earn?

• Schoolerpindia.net should earn about $0.33/day from advertising revenue.

What is Schoolerpindia.net estimated value?

• Estimated value of Schoolerpindia.net is $290.08.

What IP addresses does Schoolerpindia.net resolve to?

• Schoolerpindia.net resolves to the IP addresses 101.53.147.91.

Where are Schoolerpindia.net servers located in?

• Schoolerpindia.net has servers located in India.

schoolerpindia.net Profile

Title:SCHOOL ERP INDIA MOBILE APP
Edit Site Info

What technologies does schoolerpindia.net use?

These are the technologies used at schoolerpindia.net. schoolerpindia.net has a total of 1 technologies installed in 1 different categories.
Web Servers
Apache HTTP Server Apache HTTP Server

schoolerpindia.net Traffic Analysis

Schoolerpindia.net is ranked #6,591,441 in the world. This website is viewed by an estimated 80 visitors daily, generating a total of 80 pageviews. This equates to about 2.4K monthly visitors. Schoolerpindia.net traffic has decreased by 99.79% compared to last month.
Daily Visitors80
99.59%
Monthly Visits2.4K
99.79%
Pages per Visit1.00
Visit duration n/a
Bounce Rate100.00%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
80
Monthly Visits:
2,424
Pages per Visit:
1.00
Daily Pageviews:
80
Avg. visit duration:
n/a
Bounce rate:
100.00%
Global Reach:
1.6E-6%
Monthly Visits (SEMrush):
92
Monthly Unique Visitors (SEMrush):
92
Monthly Visits (SimilarWeb):
2,379
HypeRank:
6,591,441
SimilarWeb Rank:
6,591,441
*All traffic values are estimates only.

Traffic sources

Direct:
0%
Referral:
100.00%
Search:
0%
Social:
0%
Paid:
0%

Desktop vs Mobile

Desktop:
100.00%
Mobile:
0%

Total Visits Last 3 Months

10.6K
DEC
1.2M
JAN
2.4K
FEB
Last update was 108 days ago
     
This can take up to 60 seconds. Please wait...

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

  ▼

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:
  schoolerpindia.net
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
Full SEMrush Report >>

Revenue report ▼

Google.com would generate approximately $0.3 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $9.9 and annual gross revenue of approximately $120.5. Based on these figures, the site's net worth is estimated at around $290.1.

How much would schoolerpindia.net make?

Daily Revenue:
$0.33
Monthly Revenue:
$9.90
Yearly Revenue:
$120.45
*All earnings values are estimates only.

How much is schoolerpindia.net worth?

Website Value:
$290.1

Ad Experience Report ▼

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

Mobile summary

Root domain:
schoolerpindia.net
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:
schoolerpindia.net
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:
schoolerpindia.net
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 schoolerpindia.net hosted? ▼

Schoolerpindia.net may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.
Server IP:
101.53.147.91
ASN:
AS132420 
ISP:
282, Sector 19 
Server Location:

India, IN
 

Other sites hosted on 101.53.147.91

How fast does schoolerpindia.net load? ▼

The average loading time of schoolerpindia.net is 797 ms. The Desktop speed index is 94 and mobile speed index is 92.
Average Load Time:
797 ms

Page Speed (Google PageSpeed Insights) - Desktop

94
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)3ms 91% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 91% 7% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 7% 1% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 1%
Time To First Byte (TTFB)439ms 89% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 89% 6% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 6% 3% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 3%
First Contentful Paint (FCP)571ms 96% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 96% 1% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 1% 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)92ms 86% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 86% 5% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 5% 8% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 8%
Largest Contentful Paint (LCP)636ms 96% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 96% 1% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 1% 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)3ms 91% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 91% 7% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 7% 1% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 1%
Time To First Byte (TTFB)439ms 89% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 89% 6% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 6% 3% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 3%
First Contentful Paint (FCP)571ms 96% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 96% 1% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 1% 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)92ms 86% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 86% 5% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 5% 8% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 8%
Largest Contentful Paint (LCP)636ms 96% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 96% 1% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 1% 1% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 1%

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
Forced reflow  
Many APIs, typically reading layout geometry, force the rendering engine to pause script execution in order to calculate the style and layout. Learn more about and its mitigations. forced reflow
INP by phase  
Start investigating with the longest phase. To reduce processing duration, , often JS. Delays can be minimized optimize the main-thread costs
Font display  
Consider setting to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with . font-display font metric overrides
CSS Selector costs  
If Recalculate Style costs remain high, selector optimization can reduce them. with both high elapsed time and high slow-path %. Simpler selectors, fewer selectors, a smaller DOM, and a shallower DOM will all reduce matching costs. Optimize the selectors
Third parties  
Third party code can significantly impact load performance. to prioritize your page's content. Reduce and defer loading of third party code
First Contentful Paint 0.6 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
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
Time to Interactive 0.7 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  
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint 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
Long critical network tree  
by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. Avoid chaining critical requests
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
Largest Contentful Paint 0.7 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 2.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric

Page Speed (Google PageSpeed Insights) - Mobile

92
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)0ms 91% 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)522ms 89% of loads for this page have a fast (<800s) Time To First Byte (TTFB) 87% 8% of loads for this page have an average (800s ~ 1800s) Time To First Byte (TTFB) 8% 4% of loads for this page have a slow (>1800s) Time To First Byte (TTFB) 4%
First Contentful Paint (FCP)886ms 96% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 91% 3% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 3% 4% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 4%
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)308ms 86% of loads for this page have a fast (<200s) Interactive To Next Paint (INP) 58% 34% of loads for this page have an average (200s ~ 500s) Interactive To Next Paint (INP) 34% 7% of loads for this page have a slow (>500s) Interactive To Next Paint (INP) 7%
Largest Contentful Paint (LCP)1.0s 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% 3% of loads for this page have a slow (>4000s) Largest Contentful Paint (LCP) 3%

Origin Data

All pages served from this origin have an AVERAGE 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)0ms 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)522ms 87% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 87% 8% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 8% 4% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 4%
First Contentful Paint (FCP)886ms 91% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 91% 3% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 3% 4% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 4%
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)308ms 58% of loads for this page have a fast (<0.2s) Interactive To Next Paint (INP) 58% 34% of loads for this page have an average (0.2s ~ 0.5s) Interactive To Next Paint (INP) 34% 7% of loads for this page have a slow (>0.5s) Interactive To Next Paint (INP) 7%
Largest Contentful Paint (LCP)1.0s 93% of loads for this page have a fast (<2.5s)Largest Contentful Paint (LCP) 93% 3% of loads for this page have an average (2.5s ~ 4s)Largest Contentful Paint (LCP) 3% 3% of loads for this page have a slow (>4s)Largest Contentful Paint (LCP) 3%

Lab Data

CSS Selector costs  
If Recalculate Style costs remain high, selector optimization can reduce them. with both high elapsed time and high slow-path %. Simpler selectors, fewer selectors, a smaller DOM, and a shallower DOM will all reduce matching costs. Optimize the selectors
First Meaningful Paint  
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Speed Index 6.9 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Third parties  
Third party code can significantly impact load performance. to prioritize your page's content. Reduce and defer loading of third party code
INP by phase  
Start investigating with the longest phase. To reduce processing duration, , often JS. Delays can be minimized optimize the main-thread costs
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
Largest Contentful Paint 2.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
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
Time to Interactive 2.1 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
Forced reflow  
Many APIs, typically reading layout geometry, force the rendering engine to pause script execution in order to calculate the style and layout. Learn more about and its mitigations. forced reflow
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
Long critical network tree  
by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. Avoid chaining critical requests
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
Font display  
Consider setting to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with . font-display font metric overrides
First Contentful Paint 1.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric

Does schoolerpindia.net 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 schoolerpindia.net are reduced by %.
schoolerpindia.net does not use compression.
Original size: 3.62 KB
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:
  UNKNOWN

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. schoolerpindia.net supports HTTPS.
 schoolerpindia.net supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: *.schoolerpindia.net
Organization:
Location:
Issuer: R11
Valid from: Mar 29 02:25:53 2025 GMT
Valid until: Jun 27 02:25:52 2025 GMT
Authority: CA:FALSE
Keysize: 2048 Bits
Common Name: R11
Organization: Let's Encrypt
Location: US
Issuer: ISRG Root X1
Valid from: Mar 13 00:00:00 2024 GMT
Valid until: Mar 12 23:59:59 2027 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.
 schoolerpindia.net 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. 
Date: Sun, 06 Apr 2025 10:25:09 GMT
Server: Apache
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

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
SOA 86400
Mname ns1.schoolerpindia.co.in
Rname root.101-53-147-91.cprapid.com
Serial Number 2025040603
Refresh 3600
Retry 1800
Expire 1209600
Minimum TTL 86400
MX schoolerpindia.net 14400
TXT v=spf1 +a +mx +ip4:101.53.147.91 +ip4:101.53.158.35 ~all 14400
A 101.53.147.91 14346
NS ns1.schoolerpindia.co.in 86400
NS ns2.schoolerpindia.co.in 86400

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 November 27, 2023 and will expire on November 27, 2025 if not renewed. This website is now assigned through the registrar PDR Ltd. d/b/a PublicDomainRegistry.com. The WHOIS data for this website's domain was last updated on January 9, 2025.
Domain Created:
2023-11-27
Domain Expires:
2025-11-27
Domain Updated:
2025-01-09
Domain Age:
1 years 7 months 27 days
Domain Registrar:
PDR Ltd. d/b/a PublicDomainRegistry.com
Domain Owner:
vaibhav gupta
WhoIs:
 

Domain Name: SCHOOLERPINDIA.NET
Registry Domain ID: 2833020083_DOMAIN_NET-VRSN
Registrar WHOIS Server: whois.publicdomainregistry.com
Registrar URL: www.publicdomainregistry.com
Updated Date: 2025-01-09T10:34:41Z
Creation Date: 2023-11-27T03:28:45Z
Registrar Registration Expiration Date: 2025-11-27T03:28:45Z
Registrar: PDR Ltd. d/b/a PublicDomainRegistry.com
Registrar IANA ID: 303
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: Not Available From Registry
Registrant Name: vaibhav gupta
Registrant Organization: 
Registrant Street: HNO. D 218 ,RAJHOMES,MINAL RESIDENCY, J K  ROAD, Huzur, PO: Govindpura , DIST:Bhopal  
Registrant City: BHOPAL
Registrant State/Province: Madhya Pradesh
Registrant Postal Code: 462023
Registrant Country: IN
Registrant Phone: +91.9893070156
Registrant Phone Ext: 
Registrant Fax: 
Registrant Fax Ext: 
Registrant Email: email
Registry Admin ID: Not Available From Registry
Admin Name: vaibhav gupta
Admin Organization: 
Admin Street: HNO. D 218 ,RAJHOMES,MINAL RESIDENCY, J K  ROAD, Huzur, PO: Govindpura , DIST:Bhopal 
Admin City: BHOPAL
Admin State/Province: Madhya Pradesh
Admin Postal Code: 462023
Admin Country: IN
Admin Phone: +91.9893070156
Admin Phone Ext: 
Admin Fax: 
Admin Fax Ext: 
Admin Email: email
Registry Tech ID: Not Available From Registry
Tech Name: vaibhav gupta
Tech Organization: 
Tech Street: HNO. D 218 ,RAJHOMES,MINAL RESIDENCY, J K  ROAD, Huzur, PO: Govindpura , DIST:Bhopal 
Tech City: BHOPAL
Tech State/Province: Madhya Pradesh
Tech Postal Code: 462023
Tech Country: IN
Tech Phone: +91.9893070156
Tech Phone Ext: 
Tech Fax: 
Tech Fax Ext: 
Tech Email: email
Name Server: ns1.schoolerpindia.co.in
Name Server: ns2.schoolerpindia.co.in
DNSSEC: Unsigned
Registrar Abuse Contact Email: email
Registrar Abuse Contact Phone: +1.2013775952
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2025-04-06T10:24:56Z