orthocenter.nl Orthocenter.nl

   
Just a moment...

Domain Summary

What is the traffic rank for Orthocenter.nl?

• Orthocenter.nl ranks #2,936,936 globally on HypeStat.

What percent of global Internet users visit Orthocenter.nl?

2.13E-5% of global Internet users visit Orthocenter.nl

How many people visit Orthocenter.nl each day?

• Orthocenter.nl receives approximately 1.1K visitors and 3,194 page impressions per day.

Which countries does Orthocenter.nl receive most of its visitors from?

• Orthocenter.nl is mostly visited by people located in Netherlands,Belgium,Spain.

How much Orthocenter.nl can earn?

• Orthocenter.nl should earn about $5.56/day from advertising revenue.

What is Orthocenter.nl estimated value?

• Estimated value of Orthocenter.nl is $6,145.80.

What IP addresses does Orthocenter.nl resolve to?

• Orthocenter.nl resolves to the IP addresses 2606:4700:20::ac43:496f, 172.67.73.111.

Where are Orthocenter.nl servers located in?

• Orthocenter.nl has servers located in United States.

orthocenter.nl Profile

Title:Just a moment... Description:wij zijn orthocenter en wij leveren kwalitatieve beugels aan jong & oud. elke cliënt krijgt bij ons een professionele, deskundige en persoonlijke behandeling.
Category:Lifestyle / Fashion and Apparel
About: orthocenter.nl is a website dedicated to corrective eye surgeries and vision improvement treatments in the Netherlands. It provides information on various procedures such as LASIK, PRK, and lens implants. The site features details about the treatments, FAQs, patient testimonials, and options for consultations with ophthalmologists. It aims to offer comprehensive guidance for individuals considering surgical interventions to improve or correct their vision.
*This text is generated by artificial intelligence and may not be accurate. Edit Site Info

What technologies does orthocenter.nl use?

These are the technologies used at orthocenter.nl. orthocenter.nl has a total of 19 technologies installed in 18 different categories.

orthocenter.nl Traffic Analysis

Orthocenter.nl is ranked #2,936,936 in the world. This website is viewed by an estimated 1.1K visitors daily, generating a total of 3.2K pageviews. This equates to about 31.9K monthly visitors. Orthocenter.nl traffic has increased by 327.35% compared to last month.
Daily Visitors1.1K
297.53%
Monthly Visits31.9K
327.35%
Pages per Visit3.04
142.93%
Visit duration01:12
87.4%
Bounce Rate52.58%
45.14%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
1,052
Monthly Visits:
31,876
Pages per Visit:
3.04
Daily Pageviews:
3,194
Avg. visit duration:
01:12
Bounce rate:
52.58%
Global Reach:
2.13E-5%
Monthly Visits (SEMrush):
35,209
Monthly Unique Visitors (SEMrush):
29,743
Monthly Visits (SimilarWeb):
30,949
HypeRank:
2,936,936
SEMrush Rank:
3,542,342
SimilarWeb Rank:
1,001,604
*All traffic values are estimates only.

Traffic sources

Direct:
51.25%
Referral:
1.86%
Search:
41.49%
Social:
0%
Paid:
5.41%

Desktop vs Mobile

Desktop:
57.22%
Mobile:
42.78%

Total Visits Last 3 Months

38.9K
APR
7.5K
MAY
31.9K
JUN

Visitors by country

Country
Users%
 
Netherlands 85.36%
 
Belgium 8.96%
 
Spain 4.08%
 
United Kingdom 1.59%

Which sites are competitors to orthocenter.nl?

Websites similar to orthocenter.nl 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 340 days ago
     
This can take up to 60 seconds. Please wait...

*HypeStat.com is not promoting or affiliated with orthocenter.nl 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:
  orthocenter.nl
Rank:
(Rank based on keywords, cost and organic traffic)
  3,542,342
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  41
Organic Traffic:
(Number of visitors coming from top 20 search results)
  89
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 $5.6 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $166.8 and annual gross revenue of approximately $2K. Based on these figures, the site's net worth is estimated at around $6.1K.

How much would orthocenter.nl make?

Daily Revenue:
$5.56
Monthly Revenue:
$166.80
Yearly Revenue:
$2,029.40
*All earnings values are estimates only.

Daily earning by country

 
CountryPageviewsEarning
 
Netherlands 2,727$5.21
 
Belgium 286$0.16
 
United Kingdom 51$0.14
 
Spain 130$0.06

Loss of money due to Adblock?

Daily Revenue Loss:
$0.94
Monthly Revenue Loss:
$28.14
Yearly Revenue Loss:
$342.33
Daily Pageviews Blocked:
531
Monthly Pageviews Blocked:
15,923
Yearly Pageviews Blocked:
193,728

Daily revenue loss by country

 
CountryBlockedLost Money
 
Netherlands 464$0.89
 
United Kingdom 8$0.02
 
Belgium 34$0.02
 
Spain 25$0.01

How much is orthocenter.nl worth?

Website Value:
$6.1K

Ad Experience Report

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

Mobile summary

Root domain:
orthocenter.nl
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:
orthocenter.nl
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:
orthocenter.nl
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 orthocenter.nl hosted?

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

How fast does orthocenter.nl load?

The average loading time of orthocenter.nl is 34 ms. The Desktop speed index is 93 and mobile speed index is 53.
Average Load Time:
34 ms

Page Speed (Google PageSpeed Insights) - Desktop

93
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)10ms 73% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 73% 19% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 19% 6% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 6%
Time To First Byte (TTFB)624ms 86% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 86% 11% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 11% 2% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 2%
First Contentful Paint (FCP)934ms 93% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 93% 3% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 3% 2% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 2%
First Input Delay (FID)5ms 97% of loads for this page have a fast (<100ms) First Input Delay (FID) 97% 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)81ms 96% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 96% 3% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 3% 0% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)1.2s 95% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 95% 1% of loads for this page have an average (2500ms ~ 4000ms) Largest Contentful Paint (LCP) 1% 2% of loads for this page have a slow (>4000ms) Largest Contentful Paint (LCP) 2%

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)12ms 73% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 73% 13% of loads for this page have an average (0.01s ~ 0.025s) Cumulative Layout Shift (CLS) 13% 13% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 13%
Time To First Byte (TTFB)500ms 91% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 91% 6% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 6% 2% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 2%
First Contentful Paint (FCP)780ms 96% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 96% 2% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 2% 1% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 1%
First Input Delay (FID)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)70ms 94% of loads for this page have a fast (<200ms) Interaction To Next Paint (INP) 94% 4% of loads for this page have an average (200ms ~ 500ms) Interaction To Next Paint (INP) 4% 0% of loads for this page have a slow (>500ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)941ms 97% of loads for this page have a fast (<2500ms) Largest Contentful Paint (LCP) 97% 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
First Contentful Paint 0.8 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 1.2 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Time to Interactive 1.2 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
Preconnect to required origins  
Consider adding `preconnect` or `dns-prefetch` resource hints to establish early connections to important third-party origins. Learn how to preconnect to required origins
Largest Contentful Paint 1.6 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
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 1.3 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

53
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 73% of loads for this page have a fast (<0.01s) Cumulative Layout Shift (CLS) 96% 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)693ms 86% of loads for this page have a fast (<800s) Time To First Byte (TTFB) 81% 17% of loads for this page have an average (800s ~ 1800s) Time To First Byte (TTFB) 17% 0% of loads for this page have a slow (>1800s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)1.0s 93% of loads for this page have a fast (<1.8s) First Contentful Paint (FCP) 94% 4% of loads for this page have an average (1.8s ~ 3s) First Contentful Paint (FCP) 4% 1% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 1%
First Input Delay (FID)14ms 96% of loads for this page have a fast (<100ms) First Input Delay (FID) 96% 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)185ms 96% of loads for this page have a fast (<200s) Interactive To Next Paint (INP) 77% 18% of loads for this page have an average (200s ~ 500s) Interactive To Next Paint (INP) 18% 4% of loads for this page have a slow (>500s) Interactive To Next Paint (INP) 4%
Largest Contentful Paint (LCP)1.4s 95% of loads for this page have a fast (<2500s) Largest Contentful Paint (LCP) 94% 3% of loads for this page have an average (2500s ~ 4000s) Largest Contentful Paint (LCP) 3% 1% of loads for this page have a slow (>4000s) 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)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% 1% of loads for this page have a slow (>0.025s) Cumulative Layout Shift (CLS) 1%
Time To First Byte (TTFB)642ms 85% of loads for this page have a fast (<0.8s) Time To First Byte (TTFB) 85% 12% of loads for this page have an average (0.8s ~ 1.8s) Time To First Byte (TTFB) 12% 2% of loads for this page have a slow (>1.8s) Time To First Byte (TTFB) 2%
First Contentful Paint (FCP)915ms 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% 0% of loads for this page have a slow (>3s) First Contentful Paint (FCP) 0%
First Input Delay (FID)12ms 98% of loads for this page have a fast (<100ms) First Input Delay (FID) 97% 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%
Interactive To Next Paint (INP)176ms 81% of loads for this page have a fast (<0.2s) Interactive To Next Paint (INP) 81% 16% of loads for this page have an average (0.2s ~ 0.5s) Interactive To Next Paint (INP) 16% 2% of loads for this page have a slow (>0.5s) Interactive To Next Paint (INP) 2%
Largest Contentful Paint (LCP)1.2s 96% of loads for this page have a fast (<2.5s)Largest Contentful Paint (LCP) 96% 2% of loads for this page have an average (2.5s ~ 4s)Largest Contentful Paint (LCP) 2% 0% of loads for this page have a slow (>4s)Largest Contentful Paint (LCP) 0%

Lab Data

First Contentful Paint 2.4 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
Preconnect to required origins  
Consider adding `preconnect` or `dns-prefetch` resource hints to establish early connections to important third-party origins. Learn how to preconnect to required origins
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
Speed Index 4.1 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
First Meaningful Paint 2.5 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Time to Interactive 7.0 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
Largest Contentful Paint 9.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Total Blocking Time 660 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

Does orthocenter.nl 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 orthocenter.nl are reduced by 57%.
orthocenter.nl use br compression.
Original size: 15.09 KB
Compressed size: 6.44 KB
File reduced by: 8.65 KB (57%)

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. orthocenter.nl supports HTTPS.
 orthocenter.nl supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: orthocenter.nl
Organization:
Location:
Issuer: GTS CA 1P5
Valid from: May 22 15:09:03 2024 GMT
Valid until: Aug 20 15:09:02 2024 GMT
Authority: CA:FALSE
Keysize: 2048 Bits
Common Name: GTS CA 1P5
Organization: Google Trust Services LLC
Location: US
Issuer: GTS Root R1
Valid from: Aug 13 00:00:42 2020 GMT
Valid until: Sep 30 00:00:42 2027 GMT
Authority: CA:TRUE
Keysize: 2048 Bits
Common Name: GTS Root R1
Organization: Google Trust Services LLC
Location: US
Issuer: GlobalSign Root CA
Valid from: Jun 19 00:00:42 2020 GMT
Valid until: Jan 28 00:00:42 2028 GMT
Authority: CA:TRUE
Keysize: 4096 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.
 orthocenter.nl 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: Sun, 14 Jul 2024 05:24:01 GMT
content-type: text/html; charset=UTF-8
accept-ch: Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
critical-ch: Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
cross-origin-embedder-policy: require-corp
cross-origin-opener-policy: same-origin
cross-origin-resource-policy: same-origin
origin-agent-cluster: ?1
permissions-policy: accelerometer=(),autoplay=(),browsing-topics=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=()
referrer-policy: same-origin
x-content-options: nosniff
x-frame-options: SAMEORIGIN
cf-mitigated: challenge
cf-chl-out: 75PmGjxfZtEM6/Ca8KqxCgVHOC3DUBKZ+UhiQoE8QjZAeVGvOk7i9OwHMtq3P4VlMVlrR3l0c5NZc9R3BByTwZ8MepSCqMwm7XFyRz+3Pjufcesa6ZrBq4G65F4B/GMR49gd2iQIudQalG8JpuqqZw==$q1IeEH7m/sUehQifivWKNQ==
cache-control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
expires: Thu, 01 Jan 1970 00:00:01 GMT
report-to: {"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=CSW9BZydiLedX9kIcViz1jp7txndsxKMxda69XljnlCJpc%2FMnb27v7OyM9cnilIi9G1ufr8Csf8FIi2tUD77b905d8Ds4WKTRkYpDayplLkCki1yAIxXHy%2BHVDNWqJtf"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
vary: Accept-Encoding
strict-transport-security: max-age=15552000
server: cloudflare
cf-ray: 8a2f15871824c5cb-ORD
content-encoding: br

DNS Lookup

DNS entries (Domain Name System) are a critical component of the Internet infrastructure. They act as directories that translate human-readable domain names (such as example.com) to machine-readable IP addresses. DNS records are stored on DNS servers and help forward internet traffic efficiently.
Type Ip Target/Txt TTL
HINFO 3600
AAAA 2606:4700:20::681a:73d 230
AAAA 2606:4700:20::681a:63d 230
AAAA 2606:4700:20::ac43:496f 230
A 104.26.6.61 230
A 104.26.7.61 230
A 172.67.73.111 230
NS ruth.ns.cloudflare.com 3530
NS agustin.ns.cloudflare.com 3530

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 January 14, 1998 and will expire on June 19, 2025 if not renewed. This website is now assigned through the registrar team.blue nl B.V.. The WHOIS data for this website's domain was last updated on April 3, 2021.
Domain Created:
1998-01-14
Domain Updated:
2021-04-03
Domain Age:
27 years 5 months 5 days
Domain Registrar:
team.blue nl B.V.
WhoIs:
 

Domain name: orthocenter.nl
Status:      active

Reseller:
   TransIP
   Vondellaan 47
   2332AA Leiden
   Netherlands

Registrar:
   team.blue nl B.V.
   Vondellaan 47
   2332AA Leiden
   Netherlands

Abuse Contact:
   email

DNSSEC:      yes

Domain nameservers:
   ruth.ns.cloudflare.com
   agustin.ns.cloudflare.com

Creation Date: 1998-01-14

Updated Date: 2021-04-03

Record maintained by: SIDN BV