Yacine-tv-apk.app
تحميل Yacine TV 2025 ياسين تيفي TV [البرنامج الاصلي V3] Apk
Domain Summary
What percent of global Internet users visit Yacine-tv-apk.app?
• 0.0001581% of global Internet users visit Yacine-tv-apk.app
How many people visit Yacine-tv-apk.app each day?
• Yacine-tv-apk.app receives approximately 7.8K visitors and 17,001 page impressions per day.
Which countries does Yacine-tv-apk.app receive most of its visitors from?
• Yacine-tv-apk.app is mostly visited by people located in Morocco,Algeria,Jordan.
How much Yacine-tv-apk.app can earn?
• Yacine-tv-apk.app should earn about $30.17/day from advertising revenue.
What is Yacine-tv-apk.app estimated value?
• Estimated value of Yacine-tv-apk.app is $28,434.34.
What IP addresses does Yacine-tv-apk.app resolve to?
• Yacine-tv-apk.app resolves to the IP addresses 145.239.2.178.
Where are Yacine-tv-apk.app servers located in?
• Yacine-tv-apk.app has servers located in Frankfurt am Main, Hesse, 60306, Germany.
yacine-tv-apk.app Profile

Title:تحميل Yacine TV 2025 ياسين تيفي TV [البرنامج الاصلي V3] Apk
Description:تحميل yacine tv 2025 ياسين تيفي الاصلي من ميديا فاير لمشاهدة كافة قنوات بين سبورت الرياضية، هنا رابط تنزيل تطبيق yacine tv apk قنوات الدوري السعودي ياسين tv app
What technologies does yacine-tv-apk.app use?
These are the technologies used at yacine-tv-apk.app. yacine-tv-apk.app has a total of 13 technologies installed in 14 different categories.yacine-tv-apk.app Traffic Analysis
This website is viewed by an estimated 7.8K visitors daily, generating a total of 17K pageviews. This equates to about 236.1K monthly visitors. Yacine-tv-apk.app traffic has increased by 129.98% compared to last month.Daily Visitors7.8K
159.3%
Monthly Visits236.1K
129.98%
Pages per Visit2.18
9%
Visit duration05:01
408.33%
Bounce Rate43.51%
21.63%
Is this your site?Verify your site's metrics.
- Daily Unique Visitors:
- 7,792
- Monthly Visits:
- 236,098
- Pages per Visit:
- 2.18
- Daily Pageviews:
- 17,001
- Avg. visit duration:
- 05:01
- Bounce rate:
- 43.51%
- Global Reach:
- 0.0001581%
- Monthly Visits (SEMrush):
- 321,450
- Monthly Unique Visitors (SEMrush):
- 284,212
- Monthly Visits (SimilarWeb):
- 238,536
- HypeRank:
- n/a
- SEMrush Rank:
- 2,715,410
- SimilarWeb Rank:
- 205,085
Backlinks Report ▼
Yacine-tv-apk.app has a total of 144 backlinks from 92 referring domains and most of them comes from Singapore.- Total Backlinks:
- 144
- Follow Links:
- n/a
- Nofollow Links:
- n/a
- Referring Domains:
- 92
- Referring IPs:
- 52
- Authority Domain Score:
- 17
Backlinks by country
- Country
- Domains
- Singapore 46
- United States 9
- Germany 7
- Japan 1
- France 1
Backlinks by TLDs
- TLD Distribution
- Domains
- .in
- 26
- .com
- 24
- .net
- 7
- .edu
- 1
- .gov
- 0
Last update was 6 mins ago
This can take up to 60 seconds. Please wait...
Update will be available in 24 hours
This can take up to 60 seconds. Please wait...
Update will be available in 24 hours
*HypeStat.com is not promoting or affiliated with yacine-tv-apk.app 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:
- 9
▼
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.- Domain:
- yacine-tv-apk.app
- Rank:
(Rank based on keywords, cost and organic traffic) - 2,715,410
- Organic Keywords:
(Number of keywords in top 20 Google SERP) - 130
- Organic Traffic:
(Number of visitors coming from top 20 search results) - 186
- 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 $30.2 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $0.9K and annual gross revenue of approximately $11K. Based on these figures, the site's net worth is estimated at around $28.4K.How much would yacine-tv-apk.app make?
- Daily Revenue:
- $30.17
- Monthly Revenue:
- $905.10
- Yearly Revenue:
- $11,012.05
Daily earning by country
- CountryPageviewsEarning
- Morocco 3,166$1.90
- Algeria 2,340$1.15
- Tunisia 1,443$0.20
- Jordan 2,199$0.18
- Iraq 1,316$0.08
Loss of money due to Adblock?
- Daily Revenue Loss:
- $0.11
- Monthly Revenue Loss:
- $3.33
- Yearly Revenue Loss:
- $40.50
- Daily Pageviews Blocked:
- 380
- Monthly Pageviews Blocked:
- 11,414
- Yearly Pageviews Blocked:
- 138,873
Daily revenue loss by country
- CountryBlockedLost Money
- Algeria 117$0.06
- Morocco 63$0.04
- Iraq 105$0.01
- Jordan 66$0.01
- Tunisia 29$0.00
How much is yacine-tv-apk.app worth?
- Website Value:
- $28.4K
Ad Experience Report ▼
Summary of the ad experience rating of a website for a specific platform.Mobile summary
- Root domain:
- yacine-tv-apk.app
- 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:
- yacine-tv-apk.app
- 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:
- yacine-tv-apk.app
- 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 yacine-tv-apk.app hosted? ▼
Yacine-tv-apk.app may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.- Server IP:
- 145.239.2.178
- ASN:
- AS16276
- ISP:
- OVH SAS
- Server Location:
- Frankfurt am Main
Hesse, HE
60306
Germany, DE
Other sites hosted on 145.239.2.178
There are no other sites hosted on this IPHow fast does yacine-tv-apk.app load? ▼
The average loading time of yacine-tv-apk.app is 451 ms. The Desktop speed index is 100 and mobile speed index is 74.- Average Load Time:
- 451 ms
Page Speed (Google PageSpeed Insights) - Desktop
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)1ms
Time To First Byte (TTFB)516ms
First Contentful Paint (FCP)1.7s
First Input Delay (FID)0
Interaction To Next Paint (INP)74ms
Largest Contentful Paint (LCP)2.0s
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
Time To First Byte (TTFB)515ms
First Contentful Paint (FCP)1.6s
First Input Delay (FID)0
Interaction To Next Paint (INP)0
Largest Contentful Paint (LCP)2.0s
Lab Data
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
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
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
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
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
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
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
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 0.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Improve image delivery
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
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
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
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 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
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
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
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 Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Lazy load third-party resources with facades
Some third-party embeds can be lazy loaded. Consider replacing them with a facade until they are required. Learn how to defer third-parties with a facade
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
INP by phase
Start investigating with the longest phase. To reduce processing duration, , often JS. Delays can be minimized optimize the main-thread costs
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
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
Page Speed (Google PageSpeed Insights) - Mobile
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
Time To First Byte (TTFB)616ms
First Contentful Paint (FCP)1.7s
First Input Delay (FID)0
Interactive To Next Paint (INP)142ms
Largest Contentful Paint (LCP)2.5s
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
Time To First Byte (TTFB)616ms
First Contentful Paint (FCP)1.7s
First Input Delay (FID)0
Interactive To Next Paint (INP)142ms
Largest Contentful Paint (LCP)2.5s
Lab Data
Speed Index 3.8 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Time to Interactive 8.2 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
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric
Total Blocking Time 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
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 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
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
INP by phase
Start investigating with the longest phase. To reduce processing duration, , often JS. Delays can be minimized optimize the main-thread costs
Start investigating with the longest phase. To reduce processing duration, , often JS. Delays can be minimized optimize the main-thread costs
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
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
Improve image delivery
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
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
Some third-party embeds can be lazy loaded. Consider replacing them with a facade until they are required. Learn how to defer third-parties with a facade
First Contentful Paint 1.4 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 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
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint 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
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
Largest Contentful Paint 8.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint 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
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
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
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
Does yacine-tv-apk.app 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 yacine-tv-apk.app are reduced by 77%.
yacine-tv-apk.app use br compression.
Original size: 75.09 KB
Compressed size: 17.1 KB
File reduced by: 57.99 KB (77%)
Compressed size: 17.1 KB
File reduced by: 57.99 KB (77%)
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.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. yacine-tv-apk.app supports HTTPS. yacine-tv-apk.app supports HTTPS
Verifying SSL Support. Please wait...
Common Name: yacine-tv-apk.app
Organization:
Location:
Issuer: R11
Valid from: Mar 6 11:44:59 2025 GMT
Valid until: Jun 4 11:44:58 2025 GMT
Authority: CA:FALSE
Keysize: 2048 Bits
Organization:
Location:
Issuer: R11
Valid from: Mar 6 11:44:59 2025 GMT
Valid until: Jun 4 11:44:58 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
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. yacine-tv-apk.app 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.x-powered-by: PHP/8.3.11
x-dns-prefetch-control: on
content-type: text/html; charset=UTF-8
x-ua-compatible: IE=edge
link: <https://yacine-tv-apk.app/wp-json/>; rel="https://api.w.org/"
link: <https://yacine-tv-apk.app/wp-json/wp/v2/pages/33>; rel="alternate"; title="JSON"; type="application/json"
link: <https://yacine-tv-apk.app/>; rel=shortlink
etag: "4683-1743198606;br"
x-litespeed-cache: hit
content-encoding: br
vary: Accept-Encoding
content-length: 17511
date: Wed, 02 Apr 2025 08:40:01 GMT
server: LiteSpeed
alt-svc: h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":443"; ma=2592000, h3-Q046=":443"; ma=2592000, h3-Q043=":443"; ma=2592000, quic=":443"; ma=2592000; v="43,46"
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 |
A | 145.239.2.178 | 7126 | |
NS | 10719 | ||
NS | 10719 | ||
NS | 10719 | ||
HINFO | 3789 |
Whois Lookup ▼
Domain WHOIS is a public database that provides information about domain names, including registered owners, contact information, domain registrars, registration and expiration dates, name servers, and other relevant information. Domain registration for this website began on May 3, 2024 and will expire on May 3, 2025 if not renewed. This website is now assigned through the registrar NameSilo, LLC. The WHOIS data for this website's domain was last updated on May 8, 2024.- Domain Created:
- 2024-05-03
- Domain Expires:
- 2025-05-03
- Domain Updated:
- 2024-05-08
- Domain Age:
- 10 months 30 days
- Domain Registrar:
- NameSilo, LLC
- Domain Owner:
- PrivacyGuardian.org llc
- WhoIs:
Domain Name: yacine-tv-apk.app Registry Domain ID: E0450BA18-APP Registrar WHOIS Server: whois.nic.google Registrar URL: None Updated Date: 2024-05-08T21:28:04Z Creation Date: 2024-05-03T21:28:04Z Registry Expiry Date: 2025-05-03T21:28:04Z Registrar: NameSilo, LLC Registrar IANA ID: 1479 Registrar Abuse Contact Email:Registrar Abuse Contact Phone: +1.6024928198 Domain Status: ok https://icann.org/epp#ok Registry Registrant ID: REDACTED FOR PRIVACY Registrant Name: REDACTED FOR PRIVACY Registrant Organization: PrivacyGuardian.org llc Registrant Street: REDACTED FOR PRIVACY Registrant Street: REDACTED FOR PRIVACY Registrant City: REDACTED FOR PRIVACY Registrant State/Province: AZ Registrant Postal Code: REDACTED FOR PRIVACY Registrant Country: US Registrant Phone: REDACTED FOR PRIVACY Registrant Email: Please query the WHOIS server of the owning registrar identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Registry Admin ID: REDACTED FOR PRIVACY Admin Name: REDACTED FOR PRIVACY Admin Organization: REDACTED FOR PRIVACY Admin Street: REDACTED FOR PRIVACY Admin Street: REDACTED FOR PRIVACY Admin City: REDACTED FOR PRIVACY Admin State/Province: REDACTED FOR PRIVACY Admin Postal Code: REDACTED FOR PRIVACY Admin Country: REDACTED FOR PRIVACY Admin Phone: REDACTED FOR PRIVACY Admin Email: Please query the WHOIS server of the owning registrar identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Registry Tech ID: REDACTED FOR PRIVACY Tech Name: REDACTED FOR PRIVACY Tech Organization: REDACTED FOR PRIVACY Tech Street: REDACTED FOR PRIVACY Tech Street: REDACTED FOR PRIVACY Tech City: REDACTED FOR PRIVACY Tech State/Province: REDACTED FOR PRIVACY Tech Postal Code: REDACTED FOR PRIVACY Tech Country: REDACTED FOR PRIVACY Tech Phone: REDACTED FOR PRIVACY Tech Email: Please query the WHOIS server of the owning registrar identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Registry Billing ID: REDACTED FOR PRIVACY Billing Name: REDACTED FOR PRIVACY Billing Organization: REDACTED FOR PRIVACY Billing Street: REDACTED FOR PRIVACY Billing Street: REDACTED FOR PRIVACY Billing City: REDACTED FOR PRIVACY Billing State/Province: REDACTED FOR PRIVACY Billing Postal Code: REDACTED FOR PRIVACY Billing Country: REDACTED FOR PRIVACY Billing Phone: REDACTED FOR PRIVACY Billing Email: Please query the WHOIS server of the owning registrar identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Name Server: ns1.dnsowl.com Name Server: ns2.dnsowl.com Name Server: ns3.dnsowl.com DNSSEC: unsigned URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/ >>> Last update of WHOIS database: 2025-04-02T08:41:21Z