truyenfull.vn Truyenfull.vn

   
Truyenfull.vn - Web đọc truyện Online lớn nhất Việt Nam

Domain Summary

What is the traffic rank for Truyenfull.vn?

• Truyenfull.vn ranks #4,032 globally on HypeStat.

What percent of global Internet users visit Truyenfull.vn?

• 0.0003652% of global Internet users visit Truyenfull.vn

How many people visit Truyenfull.vn each day?

• Truyenfull.vn receives approximately 18K visitors and 43,005 page impressions per day.

Which countries does Truyenfull.vn receive most of its visitors from?

• Truyenfull.vn is mostly visited by people located in Viet Nam,United States.

How much Truyenfull.vn can earn?

• Truyenfull.vn should earn about $43.83/day from advertising revenue.

What is Truyenfull.vn estimated value?

• Estimated value of Truyenfull.vn is $41,390.85.

What IP addresses does Truyenfull.vn resolve to?

• Truyenfull.vn resolves to the IP addresses 104.26.14.14.

Where are Truyenfull.vn servers located in?

• Truyenfull.vn has servers located in Nguyên, Tinh Hoa Binh, 94107, United States.

truyenfull.vn Profile

Title:Truyenfull.vn - Web đọc truyện Online lớn nhất Việt Nam Description:Truyenfull.vn là trang web đọc truyện online, truyện ngôn tình, truyện full, truyện đam mỹ,...mới nhất hằng ngày. Cập nhật liên tục các chương truyện một cách nhanh nhất.
Tags:
truyenfullvn
truyenfull
doc truyen
truyenfullvision
truyen hay
truyen chu
doc truyen online
Category:Arts and Entertainment / Other Arts and Entertainment
About: Đọc truyện online, đọc truyện chữ, truyện hay, truyện full. Truyện Full luôn tổng hợp và cập nhật các chương truyện một cách nhanh nhất. Edit Site Info

What technologies does truyenfull.vn use?

These are the technologies used at truyenfull.vn. truyenfull.vn has a total of 4 technologies installed in 4 different categories.
CDN
CloudFlare CloudFlare
Analytics
Google Analytics Google Analytics
Security
HSTS HSTS
Miscellaneous
HTTP/3 HTTP/3

truyenfull.vn Traffic Analysis

Truyenfull.vn is ranked #4,032 in the world. This website is viewed by an estimated 18K visitors daily, generating a total of 43K pageviews. This equates to about 545.5K monthly visitors. Truyenfull.vn traffic has decreased by 1.06% compared to last month.
Daily Visitors18K
11.71%
Monthly Visits545.5K
1.06%
Pages per Visit2.39
25.95%
Visit duration04:42
77.95%
Bounce Rate53.57%
20.68%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
18,003
Monthly Visits:
545,491
Pages per Visit:
2.39
Daily Pageviews:
43,005
Avg. visit duration:
04:42
Bounce rate:
53.57%
Global Reach:
0.0003652%
Monthly Visits (SEMrush):
189,523
Monthly Unique Visitors (SEMrush):
143,951
Monthly Visits (SimilarWeb):
534,736
HypeRank:
4,032
SEMrush Rank:
3,326,147
SimilarWeb Rank:
96,445
*All traffic values are estimates only.

Traffic sources

Direct:
85.31%
Referral:
5.74%
Search:
8.79%
Social:
0.16%
Paid:
0%

Desktop vs Mobile

Desktop:
2.05%
Mobile:
97.95%

Total Visits Last 3 Months

627K
MAY
551.3K
JUN
545.5K
JUL

Visitors by country

Country
Users%
 
Viet Nam 87.40%
 
United States 12.60%

Where do visitors go on truyenfull.vn?

 
Reach%Pageviews%PerUser
truyenfull.vn
100.00%100.00%12

Which sites are competitors to truyenfull.vn?

Websites similar to truyenfull.vn 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 60 days ago
     
This can take up to 60 seconds. Please wait...

*HypeStat.com is not promoting or affiliated with truyenfull.vn 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:
1,110,000
Bing Index:
377,000

  ▼

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:
  truyenfull.vn
Rank:
(Rank based on keywords, cost and organic traffic)
  3,326,147
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  9
Organic Traffic:
(Number of visitors coming from top 20 search results)
  128
Organic Cost:
((How much need to spend if get same number of visitors from Google Adwords)
  $2.00
Full SEMrush Report >>

Revenue report ▼

Google.com would generate approximately $43.8 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $1.3K and annual gross revenue of approximately $16K. Based on these figures, the site's net worth is estimated at around $41.4K.

How much would truyenfull.vn make?

Daily Revenue:
$43.83
Monthly Revenue:
$1,314.90
Yearly Revenue:
$15,997.95
*All earnings values are estimates only.

Daily earning by country

 
CountryPageviewsEarning
 
United States 5,417$26.16
 
Viet Nam 37,588$17.67

Loss of money due to Adblock?

Daily Revenue Loss:
$5.42
Monthly Revenue Loss:
$162.48
Yearly Revenue Loss:
$1,976.86
Daily Pageviews Blocked:
2,479
Monthly Pageviews Blocked:
74,357
Yearly Pageviews Blocked:
904,674

Daily revenue loss by country

 
CountryBlockedLost Money
 
United States 975$4.71
 
Viet Nam 1,504$0.71

How much is truyenfull.vn worth?

Website Value:
$41.4K

Ad Experience Report ▼

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

Mobile summary

Root domain:
truyenfull.vn
Last Change Time:
(The last time that the site changed status.)
2024-08-06 12:13:28
Ad filtering:
(Visitors in all regions viewing your pages with the Chrome browser won�t see ads. You should fix the violations and submit your site for a review.)
On
EnforcementTime:
2024-07-19 07:10:48
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Failing

Desktop summary

Root domain:
truyenfull.vn
Last Change Time:
(The last time that the site changed status.)
2024-07-29 16:40:28
Ad filtering:
(Visitors in all regions viewing your pages with the Chrome browser won�t see ads. You should fix the violations and submit your site for a review.)
On
EnforcementTime:
2024-07-10 02:56:38
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Failing

Abusive Experience Report ▼

Summary of the abusive experience rating of a website.
Root domain:
truyenfull.vn
Last Change Time:
(The last time that the site changed status.)
2024-07-29 06:58:07
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 truyenfull.vn hosted? ▼

Truyenfull.vn may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.
Server IP:
104.26.14.14
ASN:
AS13335 
ISP:
Cloudflare Inc 
Server Location:
Nguyên
Tinh Hoa Binh, 14
94107
United States, US
 

Other sites hosted on 104.26.14.14

How fast does truyenfull.vn load? ▼

The average loading time of truyenfull.vn is 535 ms. The Desktop speed index is 98 and mobile speed index is 80.
Average Load Time:
535 ms

Page Speed (Google PageSpeed Insights) - Desktop

98
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)17ms 57% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 57% 25% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 25% 16% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 16%
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)713ms 84% of loads for this page have a fast (<1s) First Contentful Paint (FCP) 84% 12% of loads for this page have an average (1s ~ 3s) First Contentful Paint (FCP) 12% 2% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 2%
First Input Delay (FID)2ms 99% of loads for this page have a fast (<100ms) First Input Delay (FID) 99% 0% of loads for this page have an average (100ms ~ 300ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>300ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)1.2s 92% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 92% 3% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 3% 3% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 3%

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)2ms 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% 1% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 1%
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)410ms 95% of loads for this page have a fast (<1s) First Contentful Paint (FCP) 95% 3% of loads for this page have an average (1s ~ 3s) First Contentful Paint (FCP) 3% 0% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 0%
First Input Delay (FID)3ms 98% of loads for this page have a fast (<100ms) First Input Delay (FID) 98% 1% of loads for this page have an average 100ms ~ 300ms) First Input Delay (FID) 1% 0% of loads for this page have a slow (>300ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)439ms 98% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 98% 0% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 0%

Lab Data

First CPU Idle 0.8 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. . Learn more
Max Potential First Input Delay 80 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more
Performance budget  
Keep the quantity and size of network requests under the targets set by the provided performance budget. Learn more
First Contentful Paint 0.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more
Timing budget  
Set a timing budget to help you keep an eye on the performance of your site. Performant sites load fast and respond to user input events quickly. Learn more
Speed Index 0.5 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more
Avoid non-composited animations  
Animations which are not composited can be janky and increase CLS. Learn more
Time to Interactive 0.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more
First Meaningful Paint 0.7 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more
Total Blocking Time 10 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more
Estimated Input Latency 10 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy. Learn more
Largest Contentful Paint 1.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Preconnect to required origins  
Consider adding `preconnect` or `dns-prefetch` resource hints to establish early connections to important third-party origins. Learn more

Page Speed (Google PageSpeed Insights) - Mobile

80
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a SLOW 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)53ms 57% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 44% 5% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 5% 50% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 50%
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)940ms 84% of loads for this page have a fast (<1s) First Contentful Paint (FCP) 77% 18% of loads for this page have an average (1s ~ 3s) First Contentful Paint (FCP) 18% 3% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 3%
First Input Delay (FID)27ms 97% of loads for this page have a fast (<100ms) First Input Delay (FID) 97% 2% of loads for this page have an average (100ms ~ 300ms) First Input Delay (FID) 2% 0% of loads for this page have a slow (>300ms) 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)1.7s 92% of loads for this page have a fast (<2500s) Largest Contentful Paint (LCP) 89% 6% of loads for this page have an average (2500s ~ 4000s) Largest Contentful Paint (LCP) 6% 4% of loads for this page have a slow (>4000s) Largest Contentful Paint (LCP) 4%

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 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)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)610ms 89% of loads for this page have a fast (<1s) First Contentful Paint (FCP) 89% 8% of loads for this page have an average (1s ~ 3s) First Contentful Paint (FCP) 8% 1% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 1%
First Input Delay (FID)25ms 98% of loads for this page have a fast (<100ms) First Input Delay (FID) 94% 4% of loads for this page have an average 100ms ~ 300ms) First Input Delay (FID) 4% 1% of loads for this page have a slow (>300ms) First Input Delay (FID) 1%
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)660ms 97% of loads for this page have a fast (<2.5s)Largest Contentful Paint (LCP) 97% 1% of loads for this page have an average (2.5s ~ 4s)Largest Contentful Paint (LCP) 1% 1% of loads for this page have a slow (>4s)Largest Contentful Paint (LCP) 1%

Lab Data

Speed Index 1.9 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more
Estimated Input Latency 10 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy. Learn more
Preconnect to required origins  
Consider adding `preconnect` or `dns-prefetch` resource hints to establish early connections to important third-party origins. Learn more
First Contentful Paint 1.9 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more
First Meaningful Paint 2.5 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more
Largest Contentful Paint 4.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Max Potential First Input Delay 320 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more
Time to Interactive 3.5 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more
Timing budget  
Set a timing budget to help you keep an eye on the performance of your site. Performant sites load fast and respond to user input events quickly. Learn more
Performance budget  
Keep the quantity and size of network requests under the targets set by the provided performance budget. Learn more
Avoid non-composited animations  
Animations which are not composited can be janky and increase CLS. Learn more
First CPU Idle 3.2 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. . Learn more
Total Blocking Time 220 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more
First Contentful Paint (3G) 3660 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network. Learn more

Does truyenfull.vn 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 truyenfull.vn are reduced by 79%.
truyenfull.vn use br compression.
Original size: 131.21 KB
Compressed size: 26.57 KB
File reduced by: 104.64 KB (79%)

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. truyenfull.vn has 61 Safety Reputations.
Status:
  SAFE
Safety Reputations:
  61
Safety Confidence:
  2

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. truyenfull.vn supports HTTPS.
 truyenfull.vn supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: truyenfull.vision
Organization:
Location:
Issuer: WE1
Valid from: Aug 9 12:39:31 2025 GMT
Valid until: Nov 7 13:38:01 2025 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.
 truyenfull.vn 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: Wed, 27 Aug 2025 02:02:25 GMT
content-type: text/html; charset=iso-8859-1
location: https://truyenfull.vision/
accept-ranges: bytes
age: 756
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
x-cache: HIT (2)
cf-cache-status: HIT
vary: accept-encoding
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=2LdoGXpuXLy2hiuIc6dXaI4uZYPDBr%2FGYF9QXirxq7SoR9mpkwqu3TFXUdZgCm4nkdtHibRcWpOGtxS3FkGSKZgvsnrQwiTdHJNKhg59Kuf6GEyZp3uFnkw%3D"}]}
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
server: cloudflare
cf-ray: 9757fc95bfe5dbcd-FRA
alt-svc: h3=":443"; ma=86400

HTTP/2 200 
date: Wed, 27 Aug 2025 02:02:25 GMT
content-type: text/html; charset=UTF-8
cache-control: max-age=600, must-revalidate
expires: Wed, 27 Aug 2025 01:58:15 GMT
vary: Accept-Encoding
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=fhNOos8UqMgp%2B5ZWjvA%2FSjEj9zU6FtIjENmNRUhS2mwQeFVgcCLA7RQxyg%2F%2FfBATv9BN04uilzMThFpcxIMYsaJCuib6P1ey9aACgxGlg%2FFBX7pQogZB6LLjMrB9"}]}
age: 851
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
x-cache: HIT (578)
cf-cache-status: DYNAMIC
content-encoding: br
server: cloudflare
cf-ray: 9757fc95fe27e854-FRA
alt-svc: h3=":443"; ma=86400

DNS Lookup ▼

DNS entries (Domain Name System) are a critical component of the Internet infrastructure. They act as directories that translate human-readable domain names (such as example.com) to machine-readable IP addresses. DNS records are stored on DNS servers and help forward internet traffic efficiently.
Type Ip Target/Txt TTL
HINFO 3600