facia.dev Facia.dev

   
Facia - Online Tools, Editors and Tutorials

Domain Summary

What percent of global Internet users visit Facia.dev?

• 6.1E-6% of global Internet users visit Facia.dev

How many people visit Facia.dev each day?

• Facia.dev receives approximately 303 visitors and 550 page impressions per day.

Which countries does Facia.dev receive most of its visitors from?

• Facia.dev is mostly visited by people located in India,United States,Germany.

How much Facia.dev can earn?

• Facia.dev should earn about $0.98/day from advertising revenue.

What is Facia.dev estimated value?

• Estimated value of Facia.dev is $926.10.

What IP addresses does Facia.dev resolve to?

• Facia.dev resolves to the IP addresses 75.2.60.5.

Where are Facia.dev servers located in?

• Facia.dev has servers located in United States.

facia.dev Profile

Title:Facia - Online Tools, Editors and Tutorials
Description:Free online tools, editors and programming tutorials for high quality, packed in sleek modern and minimal design
Edit Site Info

What technologies does facia.dev use?

These are the technologies used at facia.dev. facia.dev has a total of 6 technologies installed in 7 different categories.
Static Site Generator
Gatsby Gatsby
JavaScript Frameworks
Gatsby Gatsby
React React
Analytics
Google Analytics Google Analytics
Security
HSTS HSTS
PaaS
Netlify Netlify
CDN
Netlify Netlify
Miscellaneous
webpack webpack

facia.dev Traffic Analysis

This website is viewed by an estimated 303 visitors daily, generating a total of 550 pageviews. This equates to about 9.2K monthly visitors. Facia.dev traffic has decreased by 6.23% compared to last month.
Daily Visitors303
51.08%
Monthly Visits9.2K
6.23%
Pages per Visit1.82
17.91%
Visit duration01:28
39.31%
Bounce Rate52.26%
22.31%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
303
Monthly Visits:
9,181
Pages per Visit:
1.82
Daily Pageviews:
550
Avg. visit duration:
01:28
Bounce rate:
52.26%
Global Reach:
6.1E-6%
Monthly Visits (SEMrush):
3,630
Monthly Unique Visitors (SEMrush):
2,369
Monthly Visits (SimilarWeb):
9,169
HypeRank:
n/a
SEMrush Rank:
2,353,923
SimilarWeb Rank:
2,584,624
*All traffic values are estimates only.

Traffic sources

Direct:
12.34%
Referral:
4.85%
Search:
82.45%
Social:
0%
Paid:
0.36%

Desktop vs Mobile

Desktop:
100.00%
Mobile:
0%

Total Visits Last 3 Months

8.5K
NOV
9.8K
DEC
9.2K
JAN

Visitors by country

Country
Users%
 
India 41.90%
 
United States 21.00%
 
Germany 13.81%
 
Russian Federation 8.33%
 
Turkey 5.99%
Last update was 3 hours ago
     
This can take up to 60 seconds. Please wait...

Update will be available in 21 hours
*HypeStat.com is not promoting or affiliated with facia.dev 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:
50

  ▼

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:
  facia.dev
Rank:
(Rank based on keywords, cost and organic traffic)
  2,353,923
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  675
Organic Traffic:
(Number of visitors coming from top 20 search results)
  256
Organic Cost:
((How much need to spend if get same number of visitors from Google Adwords)
  $21.00
Full SEMrush Report >>

Revenue report ▼

Google.com would generate approximately $1 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $29.4 and annual gross revenue of approximately $357.7. Based on these figures, the site's net worth is estimated at around $0.9K.

How much would facia.dev make?

Daily Revenue:
$0.98
Monthly Revenue:
$29.40
Yearly Revenue:
$357.70
*All earnings values are estimates only.

Daily earning by country

 
CountryPageviewsEarning
 
United States 116$0.56
 
Germany 76$0.11
 
India 230$0.09
 
Russian Federation 46$0.02
 
Turkey 33$0.01

Loss of money due to Adblock?

Daily Revenue Loss:
$0.16
Monthly Revenue Loss:
$4.72
Yearly Revenue Loss:
$57.43
Daily Pageviews Blocked:
112
Monthly Pageviews Blocked:
3,372
Yearly Pageviews Blocked:
41,028

Daily revenue loss by country

 
CountryBlockedLost Money
 
United States 21$0.10
 
Germany 22$0.03
 
India 65$0.02
 
Russian Federation 3$0.00
 
Turkey 2$0.00

How much is facia.dev worth?

Website Value:
$0.9K

Ad Experience Report ▼

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

Mobile summary

Root domain:
facia.dev
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:
facia.dev
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:
facia.dev
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 facia.dev hosted? ▼

Facia.dev may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.
Server IP:
75.2.60.5
ASN:
AS16509 
ISP:
Amazon.com, Inc. 
Server Location:

United States, US
 

Other sites hosted on 75.2.60.5

How fast does facia.dev load? ▼

The average loading time of facia.dev is 128 ms. The Desktop speed index is 100 and mobile speed index is 98.
Average Load Time:
128 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 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)0ms 99% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 99% 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)711ms 82% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 82% 15% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 15% 2% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 2%
First Contentful Paint (FCP)925ms 95% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 95% 3% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 3% 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)70ms 91% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 91% 3% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 3% 4% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 4%
Largest Contentful Paint (LCP)939ms 98% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 98% 1% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 1% 0% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 0%

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)0ms 99% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 99% 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)711ms 82% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 82% 15% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 15% 2% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 2%
First Contentful Paint (FCP)925ms 95% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 95% 3% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 3% 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)70ms 91% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 91% 3% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 3% 4% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 4%
Largest Contentful Paint (LCP)939ms 98% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 98% 1% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 1% 0% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 0%

Lab Data

Largest Contentful Paint 0.6 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Time to Interactive 0.6 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 40 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
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 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
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
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
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
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

Page Speed (Google PageSpeed Insights) - Mobile

98
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 99% 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 82% 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 95% 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 91% 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 98% 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

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 1.6 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index 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
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 2.3 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 40 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
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
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 2.3 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
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

Does facia.dev 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 facia.dev are reduced by 83%.
facia.dev use br compression.
Original size: 86.32 KB
Compressed size: 14.23 KB
File reduced by: 72.09 KB (83%)

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. facia.dev supports HTTPS.
 facia.dev supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: facia.dev
Organization:
Location:
Issuer: E5
Valid from: Feb 1 01:53:44 2025 GMT
Valid until: May 2 01:53:43 2025 GMT
Authority: CA:FALSE
Keysize:
Common Name: E5
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:

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.
 facia.dev 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. 
accept-ranges: bytes
age: 0
cache-control: public,max-age=0,must-revalidate
cache-status: "Netlify Edge"; fwd=miss
content-encoding: br
content-type: text/html; charset=UTF-8
date: Sat, 01 Mar 2025 06:14:01 GMT
etag: "543711822cdf7a9f1abb56db2f7dcf5a-ssl-df"
server: Netlify
strict-transport-security: max-age=31536000
vary: Accept-Encoding
x-nf-request-id: 01JN85E7RG73W0QWXJ26WTJC13

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
TXT ahrefs-site-verification_88242dc681b739a59eba362014648d2121ece30e3dd4cd4186a1d8700c67901d 14400
SOA 21600
Mname ns-cloud-c1.googledomains.com
Rname cloud-dns-hostmaster.google.com
Serial Number 8
Refresh 21600
Retry 3600
Expire 259200
Minimum TTL 300
A 75.2.60.5 14357
NS ns-cloud-c1.googledomains.com 10757
NS ns-cloud-c3.googledomains.com 10757
NS ns-cloud-c2.googledomains.com 10757
NS ns-cloud-c4.googledomains.com 10757

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 April 18, 2022 and will expire on April 18, 2025 if not renewed. This website is now assigned through the registrar Squarespace Domains II LLC. The WHOIS data for this website's domain was last updated on November 2, 2024.
Domain Created:
2022-04-18
Domain Expires:
2025-04-18
Domain Updated:
2024-11-02
Domain Age:
2 years 10 months 13 days
Domain Registrar:
Squarespace Domains II LLC
Domain Owner:
REDACTED FOR PRIVACY
WhoIs:
 

Domain Name: facia.dev
Registry Domain ID: 48B3849FF-DEV
Registrar WHOIS Server: whois.squarespace.domains
Registrar URL: https://domains2.squarespace.com
Registrar: Squarespace Domains II LLC
Registrar IANA ID: 895
Registrar Abuse Contact Email: email
Registrar Abuse Contact Phone: +1.646-693-5324
Reseller:
Updated Date: 2024-11-02T19:00:17.011417Z
Creation Date: 2022-04-18T16:14:27Z
Registrar Registration Expiration Date: 2025-04-18T16:14:27Z
Domain Status: client transfer prohibited http://www.icann.org/epp#client transfer prohibited
Domain Status: client delete prohibited http://www.icann.org/epp#client delete prohibited
Registry Registrant ID:
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization:
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: Tamil Nadu
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: IN
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext:
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext:
Registrant Email: https://domains.squarespace.com/whois-contact-form
Registry Admin ID:
Admin Name: REDACTED FOR PRIVACY
Admin Organization:
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: Tamil Nadu
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: IN
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext:
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext:
Admin Email: https://domains.squarespace.com/whois-contact-form
Registry Tech ID:
Tech Name: REDACTED FOR PRIVACY
Tech Organization:
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: Tamil Nadu
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: IN
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext:
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext:
Tech Email: https://domains.squarespace.com/whois-contact-form
Name Server: ns-cloud-c4.googledomains.com
Name Server: ns-cloud-c3.googledomains.com
Name Server: ns-cloud-c1.googledomains.com
Name Server: ns-cloud-c2.googledomains.com
DNSSEC: signedDelegation
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
The registration data available in this service is limited.  Additional data may be available at https://lookup.icann.org.
****** Last update of WHOIS database: 2024-11-02T19:00:17.011417Z