bt21.com website information.
bt21.com domain name is registered by .COM top-level domain registry. See the other sites registred in .COM domain zone.
No name server records were found.
and probably website bt21.com is hosted by CNNIC-ALIBABA-CN-NET-AP Alibaba (China) Technology Co., Ltd., CN web hosting company. Check the complete list of other most popular websites hosted by CNNIC-ALIBABA-CN-NET-AP Alibaba (China) Technology Co., Ltd., CN hosting company.
According to Alexa traffic rank the highest website bt21.com position was 15207 (in the world). The lowest Alexa rank position was 930464. Now website bt21.com ranked in Alexa database as number 730723 (in the world).
Website bt21.com Desktop speed measurement score (60/100) is better than the results of 35.69% of other sites shows that the page desktop performance can be improved.
bt21.com Mobile usability score (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of bt21.com (56/100) is better than the results of 45.93% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-15-2024 | 730,723 | -3,573 |
| Nov-14-2024 | 727,150 | -3,184 |
| Nov-13-2024 | 723,966 | 0 |
| Nov-12-2024 | 723,966 | 0 |
| Nov-11-2024 | 723,966 | 0 |
| Nov-10-2024 | 723,966 | -28,064 |
| Nov-09-2024 | 695,902 | 25,465 |
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bt21.com Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
bt21.com whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
Domain Name: BT21.COM
Registry Domain ID: 1555325921_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gabia.com
Registrar URL: http://www.gabia.com
Updated Date: 2023-04-20T07:20:20Z
Creation Date: 2009-05-11T18:21:04Z
Registry Expiry Date: 2026-05-11T18:21:04Z
Registrar: Gabia, Inc.
Registrar IANA ID: 244
Registrar Abuse Contact Email: abuse@gabia.com
Registrar Abuse Contact Phone: +82.2.829.3543
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: ADNS1.NAVER.COM
Name Server: ADNS2.NAVER.COM
Name Server: NS1.NAVER.JP
Name Server: NS2.NAVER.JP
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2023-12-24T07:09:52Z
bt21.com server information
Servers Location
| IP Address |
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| Country |
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bt21.com desktop page speed rank
Last tested: 2017-12-30
bt21.com Desktop Speed Test Quick Summary
priority - 27 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 260.2KiB (87% reduction).
Compressing and resizing https://www.bt21.com/img/thumb_sticker03.png could save 5.1KiB (66% reduction).
priority - 24 Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 229.7KiB (81% reduction).
Compressing https://www.bt21.com/css/bt21.css?release=201712200808 could save 38.7KiB (85% reduction).
Compressing https://www.bt21.com/ could save 4.5KiB (61% reduction).
Compressing https://www.bt21.com/js/common.js?release=201712200808 could save 1.9KiB (66% reduction).
Compressing https://www.bt21.com/css/slick.css could save 1.3KiB (70% reduction).
priority - 7 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://www.bt21.com/
https://www.bt21.com/
priority - 6 Minify JavaScript
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Minify JavaScript for the following resources to reduce their size by 58.2KiB (26% reduction).
Minifying https://www.bt21.com/js/common.js?release=201712200808 could save 687B (23% reduction).
priority - 4 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Optimize CSS Delivery of the following:
priority - 1 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://www.google-analytics.com/analytics.js (2 hours)
https://www.bt21.com/content/201712/pc_main_top_01.jpg (24 hours)
priority - 1 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 9.2KiB (21% reduction).
priority - 0 Reduce server response time
In our test, your server responded in 0.23 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 2.1KiB (29% reduction).
bt21.com Desktop Resources
| Total Resources | 21 |
| Number of Hosts | 6 |
| Static Resources | 16 |
| JavaScript Resources | 5 |
| CSS Resources | 2 |
bt21.com Desktop Resource Breakdown
bt21.com mobile page speed rank
Last tested: 2017-12-30
bt21.com Mobile Speed Test Quick Summary
priority - 26 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://www.bt21.com/
https://www.bt21.com/
priority - 23 Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 223.2KiB (81% reduction).
Compressing https://www.bt21.com/css/w_bt21.css?release=201712200804 could save 34.6KiB (84% reduction).
Compressing https://www.bt21.com/ could save 3.4KiB (60% reduction).
Compressing https://www.bt21.com/js/common.js?release=201712200804 could save 1.9KiB (66% reduction).
priority - 16 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Optimize CSS Delivery of the following:
priority - 10 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 100.1KiB (46% reduction).
priority - 6 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 58.2KiB (26% reduction).
Minifying https://www.bt21.com/js/common.js?release=201712200804 could save 687B (23% reduction).
priority - 2 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://www.google-analytics.com/analytics.js (2 hours)
https://www.bt21.com/content/201712/main_top_01.jpg (24 hours)
priority - 1 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 8.2KiB (21% reduction).
priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.4KiB (25% reduction).
priority - 0 Reduce server response time
In our test, your server responded in 0.20 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
bt21.com Mobile Resources
| Total Resources | 23 |
| Number of Hosts | 6 |
| Static Resources | 18 |
| JavaScript Resources | 5 |
| CSS Resources | 1 |
bt21.com Mobile Resource Breakdown
bt21.com mobile page usability
Last tested: 2017-12-30
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bt21.com Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
bt21.com TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.